{"title":"Wheel Hubs","description":"\u003cp\u003eWheel hubs connect the wheels to the axle in sprint kart racing and form a key part of the rear assembly for LO206 engines. In Briggs LO206 classes, these hubs come in different sizes to fit common axle diameters and include features for mounting sprockets or brake rotors.\u003c\/p\u003e\u003cp\u003eSelecting the right wheel hub affects kart handling, wheel alignment, and overall durability during races. Many racers use aluminum hubs for reduced weight in modified setups or steel for stock classes where strength is prioritized.\u003c\/p\u003e\u003cp\u003eThis category covers hubs compatible with standard kart wheels and pairs well with chains, sprockets, and brake components for complete drivetrain builds. Proper installation ensures safe operation and consistent performance on the track.\u003c\/p\u003e","products":[{"product_id":"8fln-metric-flanged-nylock-nut-sold-each-8fln","title":"Metric Flanged Nylock Nut for Secure Kart Wheel Retention","description":"\u003cp\u003eStruggling with wheel nuts that back off mid-race? This metric flanged nylock nut solves that with its innovative nylon insert design, gripping threads securely even under extreme g-forces.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e8mm x 1.25 pitch for precise fit on kart axles.\u003c\/li\u003e\n\u003cli\u003eFlanged base spreads load, reducing stress on mounting points.\u003c\/li\u003e\n\u003cli\u003eEssential for retaining wheels in bodywork and weight setups.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eBy maintaining tight connections, it indirectly boosts speed through unwavering stability, letting you focus on the line rather than hardware failures. Sold each (SKU: 8FLN), it's an affordable way to elevate your kart's mechanical integrity and race-day readiness.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the thread pitch for this nylock nut?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e This nut features an 8mm x 1.25 thread pitch, which is the standard size for most common kart axle and mounting applications.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Why should I use a flanged nylock nut instead of a standard nut?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The flanged base acts as a built-in washer to distribute clamping force over a wider area, preventing damage to your components. The nylon insert provides a locking mechanism that resists loosening caused by the high-frequency vibrations and g-forces experienced on the track.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can these nuts be reused after removal?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e While they can be reused a few times, the nylon insert loses its locking effectiveness every time it is threaded on and off. For critical safety components like wheel retention, we recommend replacing them if the nylon insert no longer provides noticeable resistance when threading by hand.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Do I need to use thread locker (like Loctite) with these?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Generally, no. The nylon insert is designed to create a secure friction fit that holds under vibration. Adding liquid thread locker is usually unnecessary and can sometimes interfere with the nylon's grip.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products From Vendor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/40mm-axle-lock-collar-wide-black-lc40b-wide\"\u003eWide Black 40mm Axle Lock Collar with Shoulder and 8mm Keyslot\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/30mm-axle-lock-collar-with-shoulder-lc30-ws\"\u003e30mm Axle Lock Collar with 7mm Shoulder for Narrow Bearing Clearance\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/50mm-axle-lock-collar-lc50\"\u003eStrong 50mm Aluminum Two-Piece Axle Lock Collar with 8mm Keyway\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/30mm-axle-lock-collar-lc30mm\"\u003ePrecision 30mm Axle Lock Collar for European-Style Kart Chassis\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/1-axle-lock-collar-lc1\"\u003e1 Inch Two-Piece Axle Lock Collar with Keyway for Kart Precision\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Swift Karting","offers":[{"title":"Default Title","offer_id":52562262262078,"sku":"8FLN","price":1.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/weightmountingaccessories-8fln-metric-flanged-nylock-nut-sold-each-8fln_16a9698f-89a3-4ec8-a647-ab7ec17370ac.jpg?v=1763116359"},{"product_id":"25mm-magnesium-metric-pattern-front-wheel-hub-96mm-width-smg0509","title":"Premium 25mm Magnesium Metric Front Wheel Hub 96mm Width for Spindles","description":"\u003cul\u003e\n\u003cli\u003eStrictly for 25mm spindles, ensuring a flush, high-precision fit.\u003c\/li\u003e\n\u003cli\u003eAdheres to Euro 3\/58 bolt pattern for broad wheel compatibility.\u003c\/li\u003e\n\u003cli\u003e96mm width balances front geometry in metric front suspensions.\u003c\/li\u003e\n\u003cli\u003e8mm studs pre-installed; lug nuts available separately for custom torque.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eFront-end finesse starts here with the 25mm magnesium metric front wheel hub, a 96mm-wide marvel that redefines lightweight engineering. Magnesium's inherent strength-to-weight ratio means this hub drops pounds from your steering assembly, granting instantaneous response to inputs—ideal for threading needles in slaloms or holding lines in high-speed sweeps.\u003c\/p\u003e\u003cp\u003eCrafted for the discerning metric racer, its Euro 3\/58 pattern opens doors to premium tire options worldwide, while the extended width supports caster adjustments for dialed-in stability. In practice sessions, the reduced mass shines by allowing finer feedback through the wheel, helping drivers sense grip limits early and avoid spins. For teams, the pre-studded design organizes wheel swaps efficiently, minimizing errors under time pressure.\u003c\/p\u003e\u003cp\u003eDurability isn't compromised; magnesium alloys resist cracking from impacts, a common front-end foe. This hub excels in braking zones, where lighter weight shortens dive and improves modulation for confident entries. Customize with kingpin kits for ultimate setup, turning your kart into a front-running machine.\u003c\/p\u003e\u003cp\u003eBeyond the track, its compact form aids storage—stack multiples without bulk. In international comps, compliance with metric specs eases tech inspections, keeping you legal and lethal. The 96mm span promotes even brake pad wear, extending service life and cutting costs. Embrace magnesium's edge for front wheels that feel telepathic.\u003c\/p\u003e\u003cp\u003eTransform steering from chore to joy with this hub's agility boost. SKU: SMG0509. Front-loaded with winning potential.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is this hub compatible with all kart spindles?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e No, this hub is strictly engineered for 25mm spindles. Please verify your spindle diameter before purchase to ensure a safe, high-precision fit.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the benefit of the 96mm width?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The 96mm width is designed to balance front geometry in metric front suspensions. It provides a wider track base, which helps in fine-tuning caster adjustments and improving overall stability during high-speed cornering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does this hub come with lug nuts?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The hub comes with 8mm studs pre-installed for efficient wheel swaps, but lug nuts are sold separately to allow you to choose your preferred torque and hardware style.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Why choose magnesium over aluminum for a front wheel hub?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Magnesium offers a superior strength-to-weight ratio. By reducing unsprung weight at the front end, you gain faster steering response, better feedback through the wheel, and improved braking modulation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What bolt pattern does this hub use?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e This hub adheres to the standard Euro 3\/58 bolt pattern, ensuring broad compatibility with a wide range of premium racing wheels used in international karting competitions.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products From Vendor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/17mm-magnesium-metric-pattern-17mm-hubs-76mm-width-smg0502\"\u003eLightweight 17mm Magnesium Metric Pattern Hubs 76mm Width for Spindles\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SMG","offers":[{"title":"Default Title","offer_id":52562555666750,"sku":"SMG0509","price":117.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/metricwheelhubs-25mm-magnesium-metric-pattern-front-wheel-hub-96mm-width-smg0509.jpg?v=1763111784"},{"product_id":"1-4-stepped-wheel-stud-only-each-bhws14","title":"Durable 1\/4\" Stepped Wheel Stud for Reliable Kart Hub Connections","description":"\u003cp\u003eWhy settle for subpar parts when American ingenuity can boost your kart's performance? This 1\/4\" stepped wheel stud stands out as a high-quality alternative to low-end imports, offering robust construction for seamless wheel attachment.\u003c\/p\u003e\u003cp\u003eDesigned to fit precisely into wheel hubs, it facilitates smooth threading and secure locking, minimizing the risk of loosening under high RPMs. Racers trust it to keep wheels aligned, allowing for consistent cornering speeds and faster overall lap times.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eUSA-made for exceptional durability and corrosion resistance\u003c\/li\u003e\n\u003cli\u003eStepped design aids in easy nut application without cross-threading\u003c\/li\u003e\n\u003cli\u003eSold individually for targeted replacements (SKU: BHWS14)\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eIntegrate this stud into your setup to enhance track readiness and focus on winning, not worrying about hardware failures.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Why should I choose a stepped wheel stud over a standard straight stud?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The stepped design is engineered to guide the wheel nut onto the threads more easily, significantly reducing the risk of cross-threading during quick wheel changes at the track.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How do I know if this 1\/4\" stud is compatible with my kart hub?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e This stud is designed for standard 1\/4\" wheel hub applications. Ensure your current hub is drilled and tapped for 1\/4\" hardware before installation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Should I use thread locker on these studs?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e While these studs are designed for a secure fit, many racers choose to use a small amount of medium-strength thread locker on the hub-side threads to ensure they remain locked in place under high-vibration racing conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Are these studs sold in sets or individually?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e This item is sold individually, making it the perfect solution for targeted replacements if you only have one damaged stud.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products From Vendor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/1-4-stepped-wheel-studs-nuts-12-kws\"\u003eReliable 1\/4\" Stepped Wheel Studs and Nuts 12-Pack for Kart Hubs\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/bwk5930-rear-bumper-hardware-kit-30mm-bwk5930\"\u003eDurable 30mm Rear Bumper Hardware Kit for Secure Kart Mounting\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/rear-bumper-keeper-kit-30mm-bkk-30mm\"\u003eHeavy-Duty 30mm Rear Bumper Keeper Kit for CIK Sprint Karts\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/rear-bumper-keeper-kit-28mm-bkk-28mm\"\u003eReliable 28mm Rear Bumper Keeper Kit with Aluminum Clamps\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Bully","offers":[{"title":"Default Title","offer_id":52562570346814,"sku":"BHWS14","price":1.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/wheelhub-1-4-stepped-wheel-stud-only-each-bhws14.jpg?v=1763112071"},{"product_id":"cwn813-cylindrical-wheel-nut-steel-13mm-od-sold-each-cwn813","title":"Steel Cylindrical Wheel Nut 13mm OD 8mm Internal Hex","description":"\u003cp\u003eCompact and tough, this cylindrical wheel nut (SKU: CWN813) uses zinc-plated steel for lasting protection.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e8mm internal hex for precise tightening.\u003c\/li\u003e\n\u003cli\u003e13mm OD keeps profile sleek; 1.25-inch pitch threads.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eSecure your wheels against loosening, promoting even tire wear and consistent speeds without interruptions.\u003c\/p\u003e","brand":"Steel Nut Co.","offers":[{"title":"Default Title","offer_id":52562590138686,"sku":"CWN813","price":2.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/metricwheelhardware-cwn813-cylindrical-wheel-nut-steel-13mm-od-sold-each-cwn813.jpg?v=1763112390"},{"product_id":"8mm-wheel-stud-hi-quality-8mmws","title":"High-Quality 8mm x 35mm Kart Wheel Stud","description":"\u003cp\u003eUniversal reliability defines this 8mm wheel stud (SKU: 8MMWS), measuring 35mm long with 1.25 pitch threads.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003ePremium steel for enduring track abuse.\u003c\/li\u003e\n\u003cli\u003eIndustry-standard design fits most metric hubs.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eBy providing a solid base for wheels, it stabilizes your kart's roll, improving grip and allowing bolder lines through turns for competitive edges.\u003c\/p\u003e","brand":"Premium Studs","offers":[{"title":"Default Title","offer_id":52562607210814,"sku":"8MMWS","price":2.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/metricwheelhardware-8mm-wheel-stud-hi-quality-8mmws.jpg?v=1763112705"},{"product_id":"17mm-magnesium-metric-pattern-17mm-hubs-76mm-width-smg0502","title":"Lightweight 17mm Magnesium Metric Pattern Hubs 76mm Width for Spindles","description":"\u003cp\u003eMagnesium's magic shines in these 17mm metric pattern hubs, clocking in at just 76mm width for a featherlight touch on your kart's wheels. Forged from premium magnesium alloy, they slash unsprung weight dramatically—up to 50% lighter than aluminum rivals—unleashing quicker suspension reactions and nimbler steering that carves corners like a scalpel.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eExclusively for 17mm spindles; adaptable to 5\/8\" with DSM58BRG bearing (separate).\u003c\/li\u003e\n\u003cli\u003eFactory-installed 8mm wheel studs meet industry standards for secure mounting.\u003c\/li\u003e\n\u003cli\u003e76mm width supports compact wheel designs in metric chassis.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eIn weight-restricted classes like Mini Rok or cadet divisions, every gram counts, and these hubs deliver savings that translate to tangible speed gains. The metric pattern ensures compatibility with global tire brands, while the magnesium construction dissipates vibrations for a smoother ride, reducing driver fatigue over long motos. For trackside efficiency, pre-installed studs mean less assembly time, keeping your focus on strategy.\u003c\/p\u003e\u003cp\u003eEngineers appreciate the hubs' rigidity despite low mass; they maintain shape under lateral forces, preserving camber and toe for optimal tire wear. Pair with lightweight rims to amplify benefits—your kart will feel alive, pivoting effortlessly through hairpins. In dusty or rainy conditions, the material's natural corrosion resistance keeps performance steady without added coatings.\u003c\/p\u003e\u003cp\u003eOrganize your metric inventory with these versatile pieces; they're stackable and durable for transport. As a bonus, the reduced inertia aids braking, shortening stopping distances for safer, more aggressive racing lines. From club days to nationals, these hubs organize your pursuit of excellence by prioritizing speed without sacrifice. Lug nuts sold separately to match your preferences.\u003c\/p\u003e\u003cp\u003eStep into the lightweight era with SMG's magnesium innovation. SKU: SMG0502. Lighter hubs, heavier wins.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Are these hubs compatible with 5\/8\" spindles?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, while these hubs are designed for 17mm spindles, they can be adapted to 5\/8\" spindles by using the DSM58BRG bearing, which is sold separately.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Why should I choose magnesium over aluminum hubs?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Magnesium hubs are significantly lighter—up to 50% lighter than aluminum—which reduces unsprung weight. This allows for quicker suspension reaction, improved steering response, and better vibration dissipation, which helps reduce driver fatigue.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Do these hubs come with lug nuts?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e No, the hubs come with factory-installed 8mm wheel studs for secure mounting, but lug nuts are sold separately so you can choose the style and type that best fits your setup.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Are these suitable for weight-restricted karting classes?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Absolutely. In classes like Mini Rok or cadet divisions where every gram matters, the weight savings provided by these magnesium hubs can translate into tangible speed gains on the track.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How do these hubs affect my kart's handling?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The reduced mass and high rigidity of these hubs help the kart pivot more effortlessly through corners. By maintaining their shape under lateral forces, they help preserve your alignment settings (camber and toe) for more consistent tire wear and handling.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products From Vendor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/25mm-magnesium-metric-pattern-front-wheel-hub-96mm-width-smg0509\"\u003ePremium 25mm Magnesium Metric Front Wheel Hub 96mm Width for Spindles\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SMG","offers":[{"title":"Default Title","offer_id":52562612158782,"sku":"SMG0502","price":106.36,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/metricwheelhubs-17mm-magnesium-metric-pattern-17mm-hubs-76mm-width-smg0502.jpg?v=1763112802"},{"product_id":"cwn815-cylindrical-wheel-nut-steel-15mm-od-sold-each-cwn815","title":"Durable Steel Cylindrical Wheel Nut 15mm OD for Secure Kart Wheel Mounting","description":"\u003cp\u003eEngineered for precision in kart racing, this cylindrical wheel nut delivers unmatched security for your wheels. Crafted from zinc-plated steel, it resists wear and corrosion during intense races.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eKey Specs:\u003c\/b\u003e 15mm outer diameter, 8mm internal hex for easy tightening, and 8mm x 1.25\" pitch internal threads.\u003c\/li\u003e\n\u003cli\u003eSafe for direct use on magnesium wheels, eliminating the need for a backup washer to save setup time.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eBy ensuring a rock-solid wheel attachment, this nut minimizes vibrations, allowing you to push harder through corners and achieve faster lap times. Essential hardware for any serious kart racer optimizing their setup. SKU: CWN815.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Do I need a backup washer when using this cylindrical wheel nut?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e No, this nut is engineered for direct use on magnesium wheels, which eliminates the need for a backup washer and helps you save valuable time during your setup.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What tools do I need to tighten this wheel nut?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e This nut features an 8mm internal hex, allowing for quick and easy tightening with a standard 8mm hex key or driver.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is this nut compatible with standard kart wheel studs?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, this nut is designed with 8mm x 1.25\" pitch internal threads, making it compatible with standard kart wheel studs of that size.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Why should I choose a steel nut over aluminum?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The zinc-plated steel construction provides superior durability, resisting wear and corrosion during intense racing conditions, ensuring your wheels remain securely mounted.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products From Vendor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/40mm-pmi-rear-wheel-hub-w-dual-patterns-double-lock-style-pm-38dl-40\"\u003e40mm PMI Double Lock Rear Wheel Hub with Dual Patterns for Secure Racing\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/ultrafree-left-front-stepped-wheel-hub-with-1-4-hardware-pm-39stfl-1-4\"\u003ePerformance Mfg UltraFree Left Front Stepped Hub - 1\/4\" Hardware - Oval Racing\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/metric-pattern-front-hub-with-17mm-bearings-5-16-hardware-only-pm-39f-17m\"\u003eMetric Pattern Front Hub Featuring 17mm Bearings and 5\/16 Hardware\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/17mm-front-hub-usa-pattern-5-16-hardware-only-included-pm-39f-17us\"\u003e17mm USA Pattern Front Hub with Included 5\/16\" Hardware\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/ultralight-right-rear-double-lock-hub-5-16-hardware-only-pm-38dl-5-16\"\u003eUltralight Right Rear Double Lock Hub for 5\/16 Inch Hardware Strength\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Performance Mfg","offers":[{"title":"Default Title","offer_id":52562615927102,"sku":"CWN815","price":1.94,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/metricwheelhardware-cwn815-cylindrical-wheel-nut-steel-15mm-od-sold-each-cwn815.jpg?v=1763112882"},{"product_id":"ultrafree-left-front-wheel-hub-with-1-4-hardware-pm-39f-1-4","title":"UltraFree Left Front Hub Equipped with 1\/4 Inch Hardware for Karts","description":"\u003cp\u003eTransform the way your kart attacks left-handers using the UltraFree left front wheel hub, paired with reliable 1\/4-inch hardware. This component's slim profile enhances aerodynamics while maintaining structural integrity for high-stakes racing.\u003c\/p\u003e\u003cp\u003eKey to its appeal is the reduced weight, which translates to snappier responses and better energy transfer to the track surface. Racers find it invaluable for fine-tuning front-end geometry, leading to optimized grip and speed.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eEffortless Steering: Lowers effort needed for precise inputs during intense maneuvers.\u003c\/li\u003e\n\u003cli\u003eCompatible Integration: Works seamlessly with UltraFree systems for balanced setups.\u003c\/li\u003e\n\u003cli\u003eEndurance Focus: Resists fatigue from repeated impacts, ensuring race-long reliability.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eOrganize your spares with this hub's compact design—easy to store and swap, minimizing downtime. Envision powering out of turns with renewed vigor; this hub delivers that advantage by stabilizing the wheel under acceleration.\u003c\/p\u003e\u003cp\u003ePerformance Mfg prioritizes quality in every detail, from machining to finish, so you can focus on driving. For left-side dominance, it's a must-have that elevates overall chassis harmony. SKU: PM-39F-1\/4 – lightweight performance redefined.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Why should I choose the UltraFree left front hub over a standard hub?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The UltraFree hub is engineered with a slim, lightweight profile that reduces unsprung weight. This allows for snappier steering response and improved energy transfer, specifically helping the kart rotate more effectively through left-hand turns.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does this hub come with the necessary hardware?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, this hub is equipped with high-quality 1\/4-inch hardware, ensuring you have the correct studs for immediate installation and secure wheel mounting.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is this hub compatible with all kart chassis?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e This hub is designed for seamless integration with UltraFree systems. While it offers universal benefits for front-end geometry, we recommend verifying your spindle size and current hub configuration to ensure a perfect fit for your specific chassis.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How does the weight reduction affect my kart's handling?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e By reducing weight at the wheel, you decrease the rotational mass and unsprung weight. This results in more precise steering inputs and helps the front end track more accurately over bumps and through high-speed corners.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What maintenance is required for this wheel hub?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e To ensure race-long reliability, periodically inspect the hub for signs of fatigue after heavy impacts. Keep the hardware clean and ensure the studs are torqued to manufacturer specifications before every session.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products From Vendor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/ultrafree-left-front-stepped-wheel-hub-with-1-4-hardware-pm-39stfl-1-4\"\u003ePerformance Mfg UltraFree Left Front Stepped Hub - 1\/4\" Hardware - Oval Racing\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/ultrafree-right-front-stepped-wheel-hub-with-1-4-hardware-pm-39stf-1-4\"\u003ePerformance Mfg UltraFree Right Front Stepped Hub - 1\/4\" Hardware - Racing Spec\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/ultralight-right-front-stepped-hub-1-4-hardware-only-pm-39st-1-4\"\u003eUltralight Right Front Stepped Hub with 1\/4\" Hardware\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/ultralite-5-8-front-hub-1-4-hardware-only-bullet-tip-studs-pm-39-1-4\"\u003eUltraLite 5\/8\" Front Hub with 1\/4\" Bullet Tip Studs for Precision Kart Handling\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/ultralight-right-rear-double-lock-hub-1-4-hardware-only-pm-38dl-1-4\"\u003eUltralight Right Rear Double Lock Hub Designed for 1\/4 Inch Hardware\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Performance Mfg","offers":[{"title":"Default Title","offer_id":52562620449086,"sku":"PM-39F-1\/4","price":34.84,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/wheelshubsbyperformancemfg-ultrafree-left-front-wheel-hub-with-1-4-hardware-pm-39f-1-4.jpg?v=1763112993"},{"product_id":"5-16-wheel-stud-with-reduced-end-kit-of-12-studs-nuts-kws516","title":"Buller Built KWS516 5\/16\" Reduced-End Wheel Stud Kit with Nuts - 12-Pack - Universal Karting","description":"\u003cp\u003eWhen sourcing reliable go kart parts for your chassis, eliminating trackside mechanical delays is just as critical as finding the perfect racing line. The Buller Built KWS516 5\/16\" Reduced-End Wheel Stud Kit is engineered to transform how you handle wheel installations under pressure. By guiding the lug nuts smoothly onto the threads, the innovative reduced-end design prevents cross-threading and slashes the time it takes to execute critical pit-lane adjustments. Whether you are tuning your engine with new carburetor parts, mounting a fresh parts tire set, or strapping on the latest go kart racing helmets, your wheel hub hardware must deliver flawless, rapid execution.\u003c\/p\u003e\u003ch2\u003ePrecision Engineering for Go Kart Parts \u0026amp; Hardware\u003c\/h2\u003e\u003cp\u003eRacers understand that every fraction of a second counts. Standard wheel studs often lead to frustrating cross-threading, forcing mechanics to waste time during high-stakes practice sessions or race day heats. This 12-pack of 5\/16\" studs and nuts provides a foolproof, self-centering mechanism. The stepped, reduced end acts as a pilot for the nut, ensuring perfect alignment every single time. Built from high-tensile steel, these studs withstand the brutal lateral forces of sprint and club racing without bending, stripping, or yielding.\u003c\/p\u003e\u003ch2\u003eSeamless Parts Tire Swaps \u0026amp; Hub Integrity\u003c\/h2\u003e\u003cp\u003eYour kart's rotational mass and hub stability dictate your overall speed and grip. By promoting even load distribution across the hub, this stud kit minimizes mechanical interruptions and extends the lifespan of your expensive magnesium or aluminum wheels. It is a vital trackside toolkit addition for both novice mechanics and veteran pit crews looking to optimize their workflow.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eReduced-End Pilot Design:\u003c\/strong\u003e Automatically centers the nut to completely eliminate cross-threading during rapid tire changes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Tensile Steel Construction:\u003c\/strong\u003e Built tough to endure repeated high-impact racing without bending or stripping.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete 12-Pack Kit:\u003c\/strong\u003e Includes 12 precision-machined 5\/16\" studs and matching nuts for a full kart overhaul or essential spares.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUniversal Chassis Compatibility:\u003c\/strong\u003e Fits standard kart hubs, making it a versatile hardware solution for various racing classes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptimized Load Distribution:\u003c\/strong\u003e Enhances overall hub integrity to keep wheels perfectly stable at top speeds.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRapid Pit-Lane Execution:\u003c\/strong\u003e Facilitates lightning-fast wheel swaps, allowing pit crews to work faster and more accurately.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVibration Resistance:\u003c\/strong\u003e Secures your wheels tightly against the hub, preventing loosening during aggressive cornering.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eThe Ultimate Complement to Your Go Kart Steering Wheel Upgrade\u003c\/h2\u003e\u003cp\u003eAchieving a pro-level setup requires attention to every detail. Pairing this heavy-duty stud kit with a go kart steering wheel upgrade ensures your handling and hub stability remain perfectly dialed in. Don't let stripped threads ruin your race weekend. Equip your chassis with the KWS516 hardware kit and experience the confidence of professional-grade wheel retention.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Why is the \"reduced-end\" design important for karting?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The reduced-end acts as a pilot, allowing the lug nut to sit squarely on the stud before you begin tightening. This design is specifically engineered to prevent cross-threading, which is a common issue when trying to mount wheels quickly in a high-pressure pit lane environment.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Are these studs compatible with all kart hubs?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e These are universal 5\/16\" studs designed to fit standard kart hubs. They are a versatile solution for most sprint and club racing chassis, but you should verify that your current hubs utilize a 5\/16\" thread pattern before installation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How many studs should I replace at once?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e This 12-pack is designed to cover a full kart overhaul (typically 3 studs per wheel). It is highly recommended to replace all studs on a hub simultaneously to ensure even load distribution and consistent torque values across the entire wheel assembly.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Do I need special tools to install these?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e No special tools are required. You can install these using standard hand tools. Ensure the studs are seated firmly into the hub and use a proper torque wrench to tighten the included nuts to your chassis manufacturer's recommended specifications.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How often should I inspect my wheel studs?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e You should inspect your studs before every race day. Look for signs of stretching, stripped threads, or bending. Because these are made from high-tensile steel, they are durable, but they should be replaced immediately if you notice any deformation to maintain hub integrity and safety.\u003c\/p\u003e","brand":"Buller Built","offers":[{"title":"Default Title","offer_id":52562621399358,"sku":"KWS516","price":21.86,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/wheelhub-5-16-wheel-stud-with-reduced-end-kit-of-12-studs-nuts-kws516.jpg?v=1763113010"},{"product_id":"1-rear-wheel-hub-black-vkhr1b","title":"Robust 1\" Black Rear Wheel Hub for Solid Kart Rear-End Stability","description":"\u003cul\u003e\n\u003cli\u003eOne-inch bore tailored for narrower axles, common in lightweight or junior karts.\u003c\/li\u003e\n\u003cli\u003eBlack coating for stealthy aesthetics and superior rust resistance in all weather.\u003c\/li\u003e\n\u003cli\u003eReinforced structure absorbs shocks from bumpy sections without deforming.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003ePicture this: you're blasting down the straight, and your rear end holds firm—no wobble, no hesitation. That's the promise of this 1\" black rear wheel hub. It clamps down on the axle with precision, channeling engine torque directly to the tires for explosive starts and sustained velocity. In offset configurations, it prevents unwanted camber changes that rob you of grip.\u003c\/p\u003e\u003cp\u003eThe beauty lies in its simplicity—easy to mount, even easier to trust. For trackside warriors juggling multiple karts, this hub's durability means fewer replacements and more focus on strategy. It excels in dirt or asphalt, where rear stability dictates overall lap pace. By keeping wheels aligned, it reduces scrub and extends tire life, a boon for budget-conscious teams.\u003c\/p\u003e\u003cp\u003eCustomize your setup around this reliable performer; it works seamlessly with spacers or extended axles for fine-tuning. Veterans swear by its consistent feel, which builds driver confidence for aggressive lines. Don't let rear-end woes slow you—equip with this hub and push harder into turns. SKU: VKHR1B. Strength where it matters most.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is this 1\" rear wheel hub compatible with standard junior kart axles?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, this hub is specifically engineered with a 1-inch bore, making it the ideal fit for the narrower axles commonly found on junior and lightweight racing karts.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does the black coating provide any performance benefits beyond aesthetics?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Absolutely. The black coating acts as a protective barrier, offering superior rust and corrosion resistance, which is essential for maintaining structural integrity when racing in varying weather conditions or on dirt tracks.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I use this hub with spacers for track width adjustments?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, this hub is designed to work seamlessly with standard karting spacers and extended axles, allowing you to fine-tune your rear track width for optimal handling and grip.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How does this hub help with tire wear?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e By ensuring a precise, wobble-free fit on the axle, this hub keeps your wheels perfectly aligned. This reduces unnecessary tire scrub during cornering, which extends the life of your tires and improves overall lap consistency.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products From Vendor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/1-rear-wheel-hub-silver-vkhr1\"\u003ePrecision 1\" Silver Rear Wheel Hub for Agile Kart Performance\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/wheel-hub-bolt-kit-5-16-3-vkhbk516\"\u003eRobust 5\/16\" Wheel Hub Bolt Kit (3-Pack) for Kart Durability\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VK","offers":[{"title":"Default Title","offer_id":52562627264830,"sku":"VKHR1B","price":23.85,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/standardwheelhubsrear-1-rear-wheel-hub-black-vkhr1b.jpg?v=1763113151"},{"product_id":"sprocket-guide-bolt-kit-1-4-x-28-thread-6-sgbkf","title":"Unbranded 1\/4 x 28 Fine Thread Sprocket Guide Bolt Kit (6 Pack) - High-Tensile Steel - Universal Karting","description":"\u003cp\u003eWhen you are browsing go karts and parts to build a bulletproof driveline, securing your sprocket guard with the right hardware is non-negotiable. The Unbranded 1\/4 x 28 Fine Thread Sprocket Guide Bolt Kit (SKU: SGBKF) delivers the exact clamping force required to keep your chain tracking perfectly under extreme loads. These fine-thread bolts prevent the micro-vibrations that lead to catastrophic chain failure and lost races.\u003c\/p\u003e\u003ch2\u003eEngineered for the Brutal Torque of a Two Cycle Engine\u003c\/h2\u003e\u003cp\u003eIn the high-stakes environment of competitive racing, every component must withstand intense heat, torque, and lateral g-forces. Standard coarse-thread hardware simply backs out when subjected to track abuse. This comprehensive 6-piece kit utilizes a precision 1\/4 x 28 fine thread pitch, maximizing thread surface contact to ensure your guards remain permanently locked in place. By completely eliminating sprocket wobble, you minimize parasitic drag and chain binding, ensuring every ounce of horsepower transfers directly to the pavement through your kart wheels go kart setup. This level of dependability means fewer DNF (Did Not Finish) results and more podium finishes.\u003c\/p\u003e\u003ch2\u003eSeamless Integration with Racing Wheel Hubs\u003c\/h2\u003e\u003cp\u003eReliability in your driveline translates directly to driver confidence on the track. Just as a premium go kart steering wheel upgrade improves your tactile feedback and cornering control, upgrading your sprocket mounting hardware ensures your power delivery is absolute, predictable, and uninterrupted. This kit provides the exact quantity needed for a complete, secure sprocket guard installation directly into your wheel hubs, making pit-side maintenance, gear ratio changes, and emergency repairs seamless. Don't let a fifty-cent bolt cost you a championship; invest in the hardware designed specifically for the violence of motorsport.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFine Thread Pitch:\u003c\/strong\u003e 1\/4 x 28 threading provides superior grip and actively resists vibration-induced loosening under race conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete 6-Piece Set:\u003c\/strong\u003e Includes exactly what you need for a full, comprehensive sprocket guide mounting application without coming up short.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Tensile Strength:\u003c\/strong\u003e Forged to endure the brutal torque spikes and aggressive power delivery of high-performance racing engines.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUniversal Compatibility:\u003c\/strong\u003e Integrates flawlessly with standard racing wheel hubs, carriers, and aftermarket sprocket guards.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAnti-Wobble Design:\u003c\/strong\u003e Keeps chains tracking perfectly true to prevent derailing, reducing friction and maximizing straightaway speed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorrosion Resistant Finish:\u003c\/strong\u003e Specially treated to survive harsh track conditions, track rubber, moisture, and extreme driveline heat.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePit-Ready Convenience:\u003c\/strong\u003e Keep a spare pack in your toolbox to ensure you are always ready for rapid gear changes between heat races.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Unbranded","offers":[{"title":"Default Title","offer_id":52562628182334,"sku":"SGBKF","price":5.47,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/sprocketguardshardware-sprocket-guide-bolt-kit-1-4-x-28-thread-6-sgbkf.jpg?v=1763113174"},{"product_id":"metric-pattern-front-hub-with-5-8-bearings-5-16-hardware-only-pm-39f-58m","title":"Performance Mfg Metric Front Hub - 5\/8\" Bearings \u0026 5\/16\" Hardware - All Classes","description":"\u003cp\u003eMaximizing front-end rigidity and minimizing lateral deflection is critical when sourcing racing go kart parts for high-load cornering. The Performance Mfg Metric Pattern Front Hub is engineered specifically to withstand the punishing lateral forces generated on modern sprint tracks. Built around heavy-duty 5\/8-inch precision bearings, this hub eliminates the spindle flex and wheel wobble that plague standard setups, ensuring your steering inputs translate directly to the asphalt with absolute reliability.\u003c\/p\u003e\u003ch2\u003eHandling the Output of a Motor Engine\u003c\/h2\u003e\u003cp\u003eWhen you are pushing the limits of your chassis, especially when dealing with the torque and speed of a high-performance motor engine, structural reliability is non-negotiable. This hub utilizes a robust single-pattern metric design tailored for 5\/16-inch hardware, providing a rock-solid mounting surface for your wheels. Whether you are managing the precise briggs and stratton lo206 horsepower curve or running high-revving two-strokes, this front hub ensures your front geometry remains perfectly aligned lap after grueling lap without fatiguing the metal.\u003c\/p\u003e\u003ch2\u003eMaximizing Top Tire Grip and Track Efficiency\u003c\/h2\u003e\u003cp\u003eDurability extends beyond just surviving the race; it means maintaining peak efficiency from the moment you leave the grid until you are packing up your fuel cans at the end of the weekend. The oversized 5\/8-inch bearings significantly reduce rolling resistance and heat buildup, preventing bearing failure during extended endurance runs. By keeping the wheel perfectly true under heavy loads, this hub maximizes your top tire contact patch, reducing uneven wear and delivering the predictable, razor-sharp turn-in required to dominate the apex.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeavy-Duty 5\/8\" Bearings:\u003c\/strong\u003e Oversized precision bearings drastically increase load capacity and prevent premature failure under heavy lateral G-forces.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMetric Bolt Pattern:\u003c\/strong\u003e Precision-machined for standard metric wheels, ensuring a flush, secure fitment with 5\/16\" mounting hardware.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBillet Aluminum Construction:\u003c\/strong\u003e CNC-machined from high-grade alloy to provide maximum structural strength while keeping rotational mass to an absolute minimum.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReduced Rolling Resistance:\u003c\/strong\u003e High-quality bearing integration minimizes friction, translating more momentum into straight-line speed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptimized Tire Wear:\u003c\/strong\u003e Eliminates wheel wobble and spindle deflection, keeping your contact patch consistent for extended tire life.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThermal Stability:\u003c\/strong\u003e Engineered to dissipate heat effectively, preventing bearing lock-up during prolonged, high-speed track sessions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirect Steering Feedback:\u003c\/strong\u003e Enhances chassis responsiveness by removing slop from the front-end assembly, allowing for surgical precision in hairpins.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eFor professional pit crews and privateer racers alike, the Performance Mfg front hub simplifies trackside maintenance. The straightforward installation process means less time wrenching and more time dialing in your setup. When you demand parts that outlast the competition and refuse to compromise on structural integrity, this metric hub is the definitive choice for your front-end assembly.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is this hub compatible with all kart chassis types?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e This hub is designed for standard metric-pattern wheels and utilizes 5\/8-inch bearings. It is compatible with most sprint and oval kart spindles that accept a 5\/8-inch bearing setup. Please verify your spindle diameter before purchase.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What size hardware does this hub use?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e This specific model is machined for 5\/16-inch wheel mounting hardware, providing a secure, high-strength fit for competitive racing applications.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How does the 5\/8-inch bearing improve performance?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The oversized 5\/8-inch bearings offer increased load capacity and reduced rolling resistance compared to smaller standard bearings. This helps minimize heat buildup and prevents wheel wobble during high-G cornering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is this hub suitable for both 4-cycle and 2-cycle racing?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, the billet aluminum construction is engineered to handle the torque and speed of various engine types, from the Briggs \u0026amp; Stratton LO206 to high-revving two-stroke engines.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What maintenance is required for these hubs?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e To ensure peak performance, periodically inspect the bearings for smooth rotation and check that the 5\/16-inch hardware is torqued correctly. Keep the hub clean of debris to maintain thermal stability during long track sessions.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products From Vendor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/metric-pattern-front-hub-with-17mm-bearings-5-16-hardware-only-pm-39f-17m\"\u003eMetric Pattern Front Hub Featuring 17mm Bearings and 5\/16 Hardware\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/ultralite-5-8-front-hub-5-16-hardware-only-pm-39-5-16\"\u003eUltraLite 5\/8\" Front Hub with 5\/16\" Hardware and Rubber Sealed Bearings\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/ultralite-5-8-front-hub-1-4-hardware-only-bullet-tip-studs-pm-39-1-4\"\u003eUltraLite 5\/8\" Front Hub with 1\/4\" Bullet Tip Studs for Precision Kart Handling\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/ultrafree-left-front-stepped-wheel-hub-with-1-4-hardware-pm-39stfl-1-4\"\u003ePerformance Mfg UltraFree Left Front Stepped Hub - 1\/4\" Hardware - Oval Racing\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/pm-3-19-metric-toe-lock-19mm-pm-3-19\"\u003e19mm Metric Toe Lock for Kart Steering Alignment\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Performance Mfg","offers":[{"title":"Default Title","offer_id":52562632966462,"sku":"PM-39F-58M","price":48.62,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/wheelshubsbyperformancemfg-metric-pattern-front-hub-with-5-8-bearings-5-16-hardware-only-pm-39f-58m.jpg?v=1763113279"},{"product_id":"40mm-pmi-rear-wheel-hub-w-dual-patterns-pm-38-40","title":"Performance Mfg PMI 40mm Dual Pattern Rear Wheel Hub - Single Lock - All Classes","description":"\u003cp\u003eMaximizing rear-end grip and trackside adaptability is non-negotiable when sourcing the best go karts and parts for your racing program. The Performance Mfg (PMI) 40mm Dual Pattern Rear Wheel Hub eliminates the need to carry duplicate spares by seamlessly bridging USA and metric wheel bolt patterns. By simply removing the precision-machined index ring, you can instantly swap between domestic and imported rims without drilling, specialized tools, or compromising concentricity.\u003c\/p\u003e\n\n\u003ch2\u003ePrecision Hubs for Wheels: USA \u0026amp; Metric Compatibility\u003c\/h2\u003e\n\u003cp\u003eWhen evaluating hubs for wheels, rigidity and clamping force are paramount to ensuring power transfers directly to your go kart tires without deflection. This single-lock style hub utilizes robust dual pinch bolts to clamp securely onto your 40mm axle, maintaining perfect alignment under heavy lateral loads. Whether you are bolting on parts new from the factory or tuning a chassis you just found while searching for go karts for sale near me, this hub provides the versatility required for mixed-standard events and diverse team inventories.\u003c\/p\u003e\n\n\u003ch2\u003eOptimizing Go Kart Tires and Rear Axle Power Delivery\u003c\/h2\u003e\n\u003cp\u003eTrack conditions change rapidly, and your ability to adapt dictates your position on the podium. The PMI 40mm dual pattern hub streamlines your pit stops, allowing mechanics to mount American rims for local club races or metric wheels for regional and national imports. The even bolt tension engineered into this hub minimizes wheel distortion under heavy cornering loads, preserving the integrity of your rims and ensuring consistent contact patches.\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual-Pattern Design:\u003c\/strong\u003e Seamlessly accommodates both USA and metric wheel bolt patterns via a removable index ring.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSingle Lock Clamping:\u003c\/strong\u003e Features heavy-duty dual pinch bolts for superior 40mm axle retention and zero slip under acceleration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncluded Hardware:\u003c\/strong\u003e Comes standard with high-strength 5\/16-24 wheel studs and nuts for immediate trackside mounting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTether Ready:\u003c\/strong\u003e Pre-drilled and prepped for a 5\/16-18 set screw to securely anchor your axle key or safety tether.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBillet Aluminum Construction:\u003c\/strong\u003e CNC-machined in the USA to minimize rotational mass while maximizing structural integrity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUniversal Application:\u003c\/strong\u003e Ideal for 40mm axles across multiple chassis brands, reducing the need for redundant pit equipment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnhanced Tire Tuning:\u003c\/strong\u003e Allows rapid wheel swaps to test different offsets and tire compounds on the fly.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cdiv style=\"text-align: center; color: #cc0000 !important; font-size: 1.4em;\"\u003eWe did not have a High Resolution of this item, this item picture may be different, but the description and title is accurate. The first two images are AI generated. The third image is accurate, but is not high resolution. Email if you would like a more detail picture before ordering.\u003c\/div\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How do I switch between USA and metric wheel patterns on this hub?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e This hub features a removable precision-machined index ring. Simply remove the ring to transition between the two bolt patterns, allowing you to mount different rim standards without needing specialized tools or drilling.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is this hub compatible with all 40mm axles?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, this hub is designed for standard 40mm kart axles. It utilizes a robust dual pinch bolt system to ensure a secure, slip-free fit across various chassis brands.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does this hub come with the necessary hardware for mounting?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, the hub includes high-strength 5\/16-24 wheel studs and nuts, making it ready for immediate trackside installation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I use this hub for both club and regional racing?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Absolutely. The dual-pattern design is specifically engineered to help racers adapt to different event requirements, such as using American rims for local club races and metric wheels for regional or national imports, without needing to swap out your entire hub assembly.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the purpose of the pre-drilled hole on the hub?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The hub is pre-drilled and prepped for a 5\/16-18 set screw, which allows you to securely anchor your axle key or safety tether to prevent movement during high-speed operation.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products From Vendor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/40mm-pmi-rear-wheel-hub-w-dual-patterns-double-lock-style-pm-38dl-40\"\u003e40mm PMI Double Lock Rear Wheel Hub with Dual Patterns for Secure Racing\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/ultralight-right-rear-double-lock-hub-5-16-hardware-only-pm-38dl-5-16\"\u003eUltralight Right Rear Double Lock Hub for 5\/16 Inch Hardware Strength\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/ultralight-right-rear-double-lock-hub-1-4-hardware-only-pm-38dl-1-4\"\u003eUltralight Right Rear Double Lock Hub Designed for 1\/4 Inch Hardware\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/ultrafree-left-front-stepped-wheel-hub-with-1-4-hardware-pm-39stfl-1-4\"\u003ePerformance Mfg UltraFree Left Front Stepped Hub - 1\/4\" Hardware - Oval Racing\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/metric-pattern-front-hub-with-17mm-bearings-5-16-hardware-only-pm-39f-17m\"\u003eMetric Pattern Front Hub Featuring 17mm Bearings and 5\/16 Hardware\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Performance Mfg","offers":[{"title":"Default Title","offer_id":52562634178878,"sku":"PM-38-40","price":44.77,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/40mm-pmi-rear-wheel-hub-w-dual-patterns-pm-38-40_1.jpg?v=1773104943"},{"product_id":"ultralight-right-rear-double-lock-hub-1-4-hardware-only-pm-38dl-1-4","title":"Ultralight Right Rear Double Lock Hub Designed for 1\/4 Inch Hardware","description":"\u003cstrong\u003eSecure every mile\u003c\/strong\u003e with the ultralight right rear double lock hub, tailored for 1\/4-inch hardware only. This innovative locking mechanism prevents wheel movement, ensuring your kart stays planted during high-speed runs.\u003cp\u003eThe double lock feature engages firmly, distributing forces evenly to enhance traction and reduce spin-outs. Its ultralight composition shaves grams off your setup, directly boosting top-end velocity.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eLockdown Reliability: Dual points secure the wheel against vibrations and shocks.\u003c\/li\u003e\n\u003cli\u003eEffortless Power Transfer: Minimizes slippage for immediate throttle response.\u003c\/li\u003e\n\u003cli\u003eStreamlined Maintenance: Hardware compatibility simplifies rear-end servicing.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eRacers love how it maintains alignment under load, leading to predictable handling that builds speed lap by lap. For trackside efficiency, the design promotes quick inspections and adjustments, keeping your team organized.\u003c\/p\u003e\u003cp\u003eWhether on asphalt or dirt, this hub handles the torque of powerful engines without faltering. SKU: PM-38DL-1\/4 – the pinnacle of rear security and lightness.\u003c\/p\u003e\u003cp\u003eIt's a small upgrade with big impacts, from smoother drifts to conserved energy.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is this hub compatible with 5\/16 inch hardware?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e No, this specific model (PM-38DL-1\/4) is precision-engineered exclusively for 1\/4 inch hardware. If you require 5\/16 inch compatibility, please select the corresponding 5\/16 inch version.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the benefit of the double lock mechanism?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The double lock feature provides dual points of contact to secure the wheel. This design significantly reduces vibrations and prevents wheel movement under high-torque loads, ensuring your alignment remains consistent throughout the race.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How does an ultralight hub improve kart performance?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e By reducing unsprung weight, this hub helps decrease rotational mass. This allows for faster acceleration and improved throttle response, helping you maintain higher top-end velocity on the track.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I use this hub on both dirt and asphalt tracks?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, the robust construction of this hub is designed to handle the torque and stress of powerful engines on both asphalt and dirt surfaces without faltering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does this hub require special maintenance?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The hub is designed for streamlined maintenance. We recommend regular inspections of the hardware and locking points before and after race sessions to ensure the double lock mechanism remains secure and free of debris.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products From Vendor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/ultralight-right-rear-double-lock-hub-5-16-hardware-only-pm-38dl-5-16\"\u003eUltralight Right Rear Double Lock Hub for 5\/16 Inch Hardware Strength\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/40mm-pmi-rear-wheel-hub-w-dual-patterns-double-lock-style-pm-38dl-40\"\u003e40mm PMI Double Lock Rear Wheel Hub with Dual Patterns for Secure Racing\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/ultralight-right-front-stepped-hub-1-4-hardware-only-pm-39st-1-4\"\u003eUltralight Right Front Stepped Hub with 1\/4\" Hardware\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/ultrafree-left-front-wheel-hub-with-1-4-hardware-pm-39f-1-4\"\u003eUltraFree Left Front Hub Equipped with 1\/4 Inch Hardware for Karts\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/ultralite-5-8-front-hub-1-4-hardware-only-bullet-tip-studs-pm-39-1-4\"\u003eUltraLite 5\/8\" Front Hub with 1\/4\" Bullet Tip Studs for Precision Kart Handling\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Performance Mfg","offers":[{"title":"Default Title","offer_id":52562636407102,"sku":"PM-38DL-1\/4","price":32.82,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/wheelshubsbyperformancemfg-ultralight-right-rear-double-lock-hub-1-4-hardware-only-pm-38dl-1-4.jpg?v=1763113358"},{"product_id":"ultralight-right-rear-double-lock-hub-5-16-hardware-only-pm-38dl-5-16","title":"Ultralight Right Rear Double Lock Hub for 5\/16 Inch Hardware Strength","description":"\u003cp\u003eFacing rear wheel instability? Solve it head-on with the ultralight right rear double lock hub, built for 5\/16-inch hardware. The double lock system clamps down tightly, eliminating play for superior drive train efficiency.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnhanced Grip:\u003c\/strong\u003e Locks wheels firmly to maximize rear traction in all conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eLightweight Advantage:\u003c\/b\u003e Reduces overall mass for quicker launches and braking.\u003c\/li\u003e\n\u003cli\u003eHardware Precision: 5\/16 compatibility ensures robust, vibration-resistant fastening.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eThis hub's design promotes even power delivery, helping you maintain momentum through long straights. It also aids in keeping your kart's rear end balanced, which is crucial for consistent corner speeds.\u003c\/p\u003e\u003cp\u003eOrganizationally, it's a win: easy to torque and check, fitting into routine maintenance without fuss. Performance Mfg's ultralight approach means more focus on racing, less on weight worries.\u003c\/p\u003e\u003cp\u003eUsers highlight its role in preventing loose wheels during endurance events. SKU: PM-38DL-5\/16 delivers the security needed for pushing limits safely.\u003c\/p\u003e\u003cp\u003eUpgrade and feel the difference in rear-end confidence.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Why should I choose a double lock hub over a standard single lock hub?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The double lock system provides superior clamping force, which eliminates wheel play and ensures the hub remains securely fastened to the axle. This is critical for maintaining consistent rear-end stability and preventing loose wheels during high-stress endurance racing.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is this hub compatible with all kart axles?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e This hub is specifically engineered for 5\/16-inch hardware. Please verify your axle diameter and current hardware setup to ensure compatibility before installation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How does the ultralight design affect my kart's performance?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e By reducing unsprung weight, this hub helps decrease rotational mass. This allows for quicker acceleration out of corners and more responsive braking, giving you a competitive edge in lap times.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What maintenance is required for the PM-38DL-5\/16 hub?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Because of its robust design, maintenance is straightforward. Regularly check the torque on your 5\/16-inch hardware before each session to ensure the double lock mechanism is fully engaged and vibration-free.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products From Vendor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/ultralight-right-rear-double-lock-hub-1-4-hardware-only-pm-38dl-1-4\"\u003eUltralight Right Rear Double Lock Hub Designed for 1\/4 Inch Hardware\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/40mm-pmi-rear-wheel-hub-w-dual-patterns-double-lock-style-pm-38dl-40\"\u003e40mm PMI Double Lock Rear Wheel Hub with Dual Patterns for Secure Racing\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/ultralight-right-front-stepped-hub-5-16-hardware-only-pm-39st-5-16\"\u003eUltralight Right Front Stepped Hub with 5\/16\" Hardware and Bearings\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/metric-pattern-front-hub-with-17mm-bearings-5-16-hardware-only-pm-39f-17m\"\u003eMetric Pattern Front Hub Featuring 17mm Bearings and 5\/16 Hardware\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/17mm-front-hub-usa-pattern-5-16-hardware-only-included-pm-39f-17us\"\u003e17mm USA Pattern Front Hub with Included 5\/16\" Hardware\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Performance Mfg","offers":[{"title":"Default Title","offer_id":52562636439870,"sku":"PM-38DL-5\/16","price":32.82,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/wheelshubsbyperformancemfg-ultralight-right-rear-double-lock-hub-5-16-hardware-only-pm-38dl-5-16.jpg?v=1763113360"},{"product_id":"8mm-copper-cik-wheel-nut-10mm-od-hex-8mmcikwn","title":"8mm Copper CIK Homologated Wheel Nut with 10mm Hex","description":"\u003cul\u003e\n\u003cli\u003eCopper material for corrosion resistance and easy removal.\u003c\/li\u003e\n\u003cli\u003e8mm x 1.25 pitch; 10mm OD hex head for tool compatibility.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eThis CIK-approved wheel nut (SKU: 8MMCIKWN) locks wheels firmly, minimizing flex that could slow cornering speeds.\u003c\/p\u003e\u003cp\u003eSold individually, it's perfect for replacements, helping maintain race-legal setups and organized spares.\u003c\/p\u003e","brand":"CIK Approved","offers":[{"title":"Default Title","offer_id":52562636505406,"sku":"8MMCIKWN","price":1.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/metricwheelhardware-8mm-copper-cik-wheel-nut-10mm-od-hex-8mmcikwn.jpg?v=1763113362"},{"product_id":"40mm-pmi-rear-wheel-hub-w-dual-patterns-double-lock-style-pm-38dl-40","title":"40mm PMI Double Lock Rear Wheel Hub with Dual Patterns for Secure Racing","description":"\u003cul\u003e\n\u003cli\u003eDouble lock mechanism with four pinch bolts for ultimate axle grip in demanding conditions.\u003c\/li\u003e\n\u003cli\u003eDual patterns support both USA and metric wheels via removable index ring.\u003c\/li\u003e\n\u003cli\u003eFull 5\/16-24 hardware kit included for out-of-box readiness.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eDouble the security, single the hassle—this 40mm PMI rear hub redefines reliability for serious kart builders. The four-bolt clamping system distributes force evenly, eliminating the slip that plagues lesser designs during hard launches or sudden direction changes. Versatile patterning means you're never wheel-locked at international meets; just pop off the ring for metric fitment.\u003c\/p\u003e\u003cp\u003ePerformance Mfg's attention to detail shows in the hub's balanced machining, which aids in smoother rotation and less energy waste. For endurance racers, this translates to cooler-running rears and extended component life. Track engineers praise its role in fine-tuning offset, where precise locking prevents camber shifts that upset balance.\u003c\/p\u003e\u003cp\u003eInstallation is a breeze, but the real win is in race-day confidence—know your rear end won't budge, so you can attack corners with full commitment. It organizes axle work efficiently, as the double lock reduces the need for constant re-torquing. Compatible with tethers or keys via set screw hole (not included), it fits safety regs effortlessly.\u003c\/p\u003e\u003cp\u003eElevate from standard to superior; this hub's engineering helps shave fractions off laps through unwavering traction. Ideal for 40mm setups in LO206 or similar classes. SKU: PM-38DL-40. Lock in victory.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How do I switch between USA and metric wheel patterns?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e This hub features a removable index ring. Simply remove the ring to transition the hub from a USA pattern to a metric pattern, allowing you to use a wider variety of wheel brands without needing to replace the entire hub.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Why is the double lock mechanism better than a standard hub?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The double lock system utilizes four pinch bolts to distribute clamping force evenly across the axle. This prevents the hub from slipping during hard launches or aggressive cornering, ensuring your rear end remains stable and consistent throughout the race.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does this hub come with the necessary hardware?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, this 40mm PMI rear hub includes a full 5\/16-24 hardware kit, making it ready for installation right out of the box.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I use this hub with a keyway or tether system?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, the hub includes a set screw hole that is compatible with standard tethers or keys, helping you meet safety regulations for your specific racing class.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Will this hub fit my 40mm axle?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, this hub is precision-machined specifically for 40mm axle setups, making it an ideal upgrade for LO206 and similar karting classes.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products From Vendor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/40mm-pmi-rear-wheel-hub-w-dual-patterns-pm-38-40\"\u003e40mm-pmi-rear-wheel-hub-w-dual-patterns-pm-38-40\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/ultralight-right-rear-double-lock-hub-5-16-hardware-only-pm-38dl-5-16\"\u003eUltralight Right Rear Double Lock Hub for 5\/16 Inch Hardware Strength\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/ultralight-right-rear-double-lock-hub-1-4-hardware-only-pm-38dl-1-4\"\u003eUltralight Right Rear Double Lock Hub Designed for 1\/4 Inch Hardware\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/pm-116116-seat-weight-bolt-mounting-kit-pm-116116\"\u003eDurable Seat Weight Bolt Mounting Kit for Kart Longevity\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Performance Mfg","offers":[{"title":"Default Title","offer_id":52562636636478,"sku":"PM-38DL-40","price":52.74,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/standardwheelhubsrear-40mm-pmi-rear-wheel-hub-w-dual-patterns-double-lock-style-pm-38dl-40.jpg?v=1763113364"},{"product_id":"k707n-ridolfi-righetti-40mm-rear-hub-95mm-length-black-k707n","title":"Ridolfi Righetti Black 40mm Rear Hub 95mm Length for Elite Metric Karts","description":"\u003cp\u003eElite Italian engineering arrives in the Ridolfi Righetti 40mm rear hub, a 95mm-length black beauty that elevates metric karting to new heights. This extended profile shifts rear weight optimally, fostering deeper grip for launches that pin you back and exits that catapult ahead of the pack. Black finish blends stealth with substance, hiding wear while showcasing pro-level quality.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e40mm bore for seamless integration with high-end metric axles.\u003c\/li\u003e\n\u003cli\u003e95mm length accommodates wider rims, fine-tuning track-specific stagger.\u003c\/li\u003e\n\u003cli\u003ePrecision-machined interfaces for bolt-on compatibility with Ridolfi components.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eIn the crucible of grand prix circuits, this hub's rigidity prevents deflection under mega-torque from 125cc engines, ensuring power purity to the tires. The 95mm span allows nuanced adjustments in axle positioning, a favorite among chassis tuners chasing neutral handling. For endurance pros, its heat-treated alloy withstands marathon abuse, maintaining tolerances that keep laps repeatable.\u003c\/p\u003e\u003cp\u003eOrganize your elite kit around this hub—its modular design pairs with adjustable hubs or spacers for bespoke geometries. Racers in World Karting Association events laud its vibration damping, which smooths the ride and sharpens focus. The black anodizing repels grime, simplifying cleanups between sessions and preserving aesthetics for sponsor photos.\u003c\/p\u003e\u003cp\u003eVersatility extends to hybrid setups; mount it with international wheels for cross-border reliability. The extended length aids in bump compliance, absorbing chatter without upsetting balance—crucial for technical tracks. Invest in Righetti's heritage, where every millimeter counts toward podium hardware. This hub doesn't just fit; it transforms rear dynamics into a symphony of speed.\u003c\/p\u003e\u003cp\u003eFrom qualis to finals, feel the difference in controlled aggression. SKU: K707N. Italian flair, global domination.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is this 95mm hub compatible with all 40mm kart axles?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, this hub is designed for standard 40mm metric axles. However, the 95mm length is specifically engineered to provide extra stability and track-width adjustment, making it ideal for high-performance chassis setups.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How does the 95mm length affect my kart's handling?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The extended 95mm length allows for wider rear track adjustments. This helps in fine-tuning your stagger and weight distribution, which can increase rear grip on corner exit and improve bump compliance on technical tracks.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What maintenance is required for the black anodized finish?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The black anodizing is highly durable and resistant to grime. Simply wipe the hub down with a standard degreaser between sessions to keep it clean and ensure the bolt interfaces remain free of debris for easy wheel changes.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I use this hub with different types of wheels?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, the hub features a versatile design that supports both Ridolfi components and various international wheel standards, allowing for hybrid setups to suit your specific racing requirements.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products From Vendor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/40mm-medium-axle-40mmaxm\"\u003eRidolfi Righetti 40mm Medium Axle M2 for Balanced Kart Dynamics\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/40mm-hard-axle-40mmaxh\"\u003eRidolfi Righetti 40mm Hard Axle H2 for Rigid Track Dominance\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/40mm-pegged-axle-key-three-pegs-rrpak\"\u003eOEM 40mm Three-Peg Axle Key for Ridolfi Righetti Axles\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Ridolfi Righetti","offers":[{"title":"Default Title","offer_id":52562637652286,"sku":"K707N","price":118.78,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/metricwheelhubs-k707n-ridolfi-righetti-40mm-rear-hub-95mm-length-black-k707n.jpg?v=1763113384"},{"product_id":"k711n-ridolfi-righetti-40mm-rear-hub-115mm-length-black-k711n","title":"Righetti Ridolfi K711N 40mm Rear Wheel Hub - 115mm Length Black - Shifter \u0026 206 Karts","description":"\u003cp\u003eMaximizing rear-end grip and stability demands high-caliber go kart components, and the Righetti Ridolfi 40mm x 115mm rear hub delivers exactly that for high-horsepower applications. Designed specifically for karts running a 40mm rear axle, this extended 115mm hub is the definitive solution for dialing in traction on low-grip circuits or managing the aggressive torque of shifter karts. By widening the clamping surface and extending the leverage point on the axle, this hub effectively stiffens the rear assembly, reducing unwanted flex and ensuring your power translates directly to the tarmac.\u003c\/p\u003e\u003ch2\u003eEngineered for Unrelenting Durability\u003c\/h2\u003e\u003cp\u003eWhen you are pushing the limits of your chassis, reliability is non-negotiable. Milled from a solid billet of high-grade aluminum and finished with a hard-wearing black anodized coating, the K711N hub resists the corrosive effects of track debris and harsh racing environments. Unlike standard hubs that can warp or slip under extreme lateral loads, this 115mm variant utilizes a robust clamping design alongside integrated 8mm keyways to lock onto the axle with zero play. Whether you are rebuilding your entire rear assembly or just swapping out worn mounting hardware, this hub guarantees a bulletproof fitment.\u003c\/p\u003e\u003ch2\u003eSeamless Integration with Your Setup\u003c\/h2\u003e\u003cp\u003eTuning a kart requires a holistic approach—from optimizing your engine parts to refining your turn-in response with a go kart steering wheel upgrade. This Righetti Ridolfi hub complements those modifications by anchoring the rear end, allowing your chassis to track true through high-speed sweepers. It features the standard European bolt pattern (3\/58) and comes pre-fitted with heavy-duty M8 steel wheel studs, making wheel changes in the hot pits fast and secure. If you are already running a precision go kart steering kit, adding this 115mm rear hub will balance the chassis dynamics, giving you the confidence to attack apexes without fear of the rear stepping out unpredictably.\u003c\/p\u003e\u003ch2\u003eTechnical Specifications \u0026amp; Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eExtended 115mm Profile:\u003c\/strong\u003e Maximizes rear grip and chassis stiffness, ideal for shifter karts and high-horsepower classes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e40mm Axle Compatibility:\u003c\/strong\u003e Precision-machined bore fits seamlessly onto standard 40mm European and modern 206-specific axles.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBillet Aluminum Construction:\u003c\/strong\u003e Offers an exceptional strength-to-weight ratio, reducing unsprung mass without sacrificing durability.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBlack Anodized Finish:\u003c\/strong\u003e Provides superior corrosion resistance and a sleek, professional aesthetic in the paddock.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegrated M8 Steel Studs:\u003c\/strong\u003e Factory-installed wheel studs ensure secure wheel mounting and strip-resistant longevity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard Euro Pattern:\u003c\/strong\u003e Utilizes the universal 3\/58 bolt pattern for broad compatibility with modern kart wheels.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e8mm Keyway:\u003c\/strong\u003e Locks securely into the axle keyway to prevent rotational slipping under heavy acceleration.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Why should I choose a 115mm hub over a standard length hub?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The 115mm length provides a wider clamping surface on the axle, which increases chassis stiffness and rear-end grip. This is particularly beneficial for high-horsepower shifter karts or when racing on low-grip track surfaces where you need to maximize traction.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is this hub compatible with my 40mm axle?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, the K711N is precision-machined specifically for 40mm rear axles, which are standard on most modern European karts and 206-class chassis.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does this hub come with the necessary hardware to mount my wheels?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, this hub comes pre-fitted with heavy-duty M8 steel wheel studs, allowing for a secure, strip-resistant connection to your wheels using the standard 3\/58 European bolt pattern.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How do I ensure the hub doesn't slip on the axle during acceleration?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The K711N features an integrated 8mm keyway. Ensure your axle key is properly seated in both the axle and the hub keyway before tightening the clamping bolts to prevent any rotational slipping.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I use this hub on a 30mm axle?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e No, this hub is designed exclusively for 40mm axles. Attempting to install it on a 30mm axle will result in a poor fit and potential safety hazards.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products From Vendor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/40mm-soft-axle-40mmaxs\"\u003eRighetti Ridolfi KD120-S6 40mm Soft Rear Axle - 3mm Wall - Margay Ignite\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/ws4mm-4mm-wheel-spacer-17mm-ws4mm\"\u003eRighetti Ridolfi Metric Front Wheel Spacer - 17mm ID x 4mm - All Classes\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Righetti Ridolfi","offers":[{"title":"Default Title","offer_id":52562637685054,"sku":"K711N","price":124.17,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/metricwheelhubs-k711n-ridolfi-righetti-40mm-rear-hub-115mm-length-black-k711n.jpg?v=1763113385"},{"product_id":"ws-40mm-wheel-stud-for-vkhr40mm-sold-each-ws-40mm","title":"Van-K VKHR40MM Precision 40mm Wheel Stud - 8mm to 5\/16-24 Thread - Sprint \u0026 Oval Karting","description":"\u003cp\u003eSourcing elite performance parts from a premier go kart shop is the only way to guarantee your chassis translates every ounce of power to the tarmac. The Van-K VKHR40MM 40mm Wheel Stud is purpose-built for hybrid hub setups, seamlessly bridging the gap between metric and imperial hardware. Featuring an 8mm x 1.25 hub-end thread and a 5\/16-24 nut-end thread, this high-tensile stud ensures your wheel assemblies remain perfectly balanced under extreme lateral loads.\u003c\/p\u003e\u003ch2\u003eOptimizing Chassis Dynamics and Tire Brands\u003c\/h2\u003e\u003cp\u003eWhether you are mounting standard rims or experimenting with different tire brands to find the perfect grip, wheel stud rigidity is non-negotiable. Flex at the hub leads to inconsistent contact patches and unpredictable handling. By utilizing high-precision machining, the WS-40MM stud prevents wheel wobble, ensuring even tire wear and immediate throttle response. This structural integrity is especially critical when trying to maximize briggs and stratton lo206 horsepower, where every fraction of rolling resistance costs you tenths on the stopwatch.\u003c\/p\u003e\u003ch2\u003eSeamless Integration with Tillotson Carb and Brake Calliper Parts\u003c\/h2\u003e\u003cp\u003eA race-winning kart requires harmony across all components. Just as you meticulously tune your tillotson carb for optimal fuel delivery or bleed your brake calliper parts for threshold braking, your wheel hardware demands the same attention to detail. These studs handle massive torque loads without deforming, supporting aggressive cornering and straight-line speed.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHybrid Threading:\u003c\/strong\u003e 8mm x 1.25 metric hub end seamlessly transitions to a 5\/16-24 imperial nut end.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Tensile Steel:\u003c\/strong\u003e Resists shear forces and prevents stud elongation during aggressive heat cycles.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision Machining:\u003c\/strong\u003e Eliminates wheel wobble, promoting consistent contact patches across all tire brands.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTorque Retention:\u003c\/strong\u003e Maintains clamping force to support high-grip tracks and heavy braking zones.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUniversal Compatibility:\u003c\/strong\u003e Specifically engineered for VKHR40MM hubs (requires three studs per hub for balanced installation).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSold Individually:\u003c\/strong\u003e Exact replacement (SKU: WS-40MM) allows for custom quantities and easy spares management in the pits.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Why does this stud have two different thread sizes?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e This is a hybrid stud designed to bridge the gap between metric and imperial hardware. The 8mm x 1.25 end threads into your metric hub, while the 5\/16-24 end allows you to use standard imperial lug nuts, which are common in many karting setups.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How many studs do I need per hub?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e These studs are specifically engineered for VKHR40MM hubs, which require three studs per hub for a balanced and secure installation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Should I use thread locker on these studs?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, it is highly recommended to use a medium-strength thread locker (such as blue Loctite) on the hub-end threads to prevent them from backing out during the intense vibration and heat cycles of a race weekend.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How often should I replace my wheel studs?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e You should inspect your studs regularly for signs of stretching, thread damage, or bending. If you notice any deformation or if the lug nuts do not thread on smoothly, replace the stud immediately to ensure your wheel assembly remains secure under lateral loads.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Will these fit hubs other than the Van-K VKHR40MM?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e These are precision-engineered for the VKHR40MM hub. While the 8mm thread may fit other metric hubs, we recommend verifying your hub's thread pitch and depth to ensure the stud seats correctly without bottoming out or leaving insufficient thread engagement.\u003c\/p\u003e","brand":"Van-K","offers":[{"title":"Default Title","offer_id":52562638012734,"sku":"WS-40MM","price":3.58,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/wheelhub-ws-40mm-wheel-stud-for-vkhr40mm-sold-each-ws-40mm.jpg?v=1763113394"},{"product_id":"1-4-stepped-wheel-studs-big-1-2-hex-nuts-12-pack-bnkws","title":"Complete 1\/4\" Stepped Wheel Studs with Big 1\/2\" Hex Nuts Kit (12-Pack)","description":"\u003cp\u003eTransform your kart maintenance routine with this comprehensive 12-pack kit, combining precision 1\/4\" stepped wheel studs and robust big 1\/2\" hex nuts. Tailored for kart racers who demand the best, this set replaces smaller 7\/16\" nuts with larger ones for improved handling and strength.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eStepped studs ensure flawless wheel centering and prevent misalignment during high-speed runs\u003c\/li\u003e\n\u003cli\u003eBig 1\/2\" OD flanged nuts (FNS1214 style) provide extra surface area for secure, vibration-resistant fastening\u003c\/li\u003e\n\u003cli\u003ePerfect for outfitting all four wheels or keeping spares organized in your pit setup\u003c\/li\u003e\n\u003cli\u003eHigh-strength materials withstand the rigors of dirt, asphalt, and indoor tracks\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eImagine shaving seconds off your laps by eliminating loose wheel issues— this kit makes it possible. The stepped design simplifies installation, saving time during frantic pre-race adjustments. For teams or frequent racers, having 12 ready-to-go pairs means less downtime and more focus on strategy. Comparable to our standard KWS kit but upgraded for those who prefer the added leverage of larger nuts, this bundle (SKU: BNKWS) is essential for maintaining peak performance. Whether you're a pro or amateur, these components help organize your hardware drawer while delivering the reliability needed to push your kart to its limits on every straightaway and turn.\u003c\/p\u003e\u003cp\u003eDurability meets convenience: each stud threads smoothly into hubs, and the oversized nuts lock down with confidence, ensuring your wheels stay put through bumps and sprints. Invest in this pack to streamline wheel changes and boost your competitive edge.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Why should I choose stepped studs over standard straight studs?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The stepped design is engineered to ensure your wheel is perfectly centered on the hub. This eliminates wheel wobble and misalignment, which is critical for maintaining stability and handling during high-speed cornering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the advantage of using the 1\/2\" hex nuts included in this kit?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e These oversized 1\/2\" flanged nuts provide a larger surface area compared to standard 7\/16\" nuts. This increased contact area creates a more secure, vibration-resistant hold, ensuring your wheels stay tight throughout your race session.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is this kit compatible with all kart hubs?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e This kit is designed for standard kart hubs utilizing 1\/4\" stud hardware. It is an excellent upgrade for racers looking to improve their hardware reliability, but we recommend verifying your hub's current stud diameter before installation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How many wheels does this 12-pack cover?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e This 12-pack is perfect for outfitting all four wheels on your kart (assuming a 3-stud per wheel configuration), with enough remaining to keep a few spares in your pit box for quick repairs.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products From Vendor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/ultrafree-left-front-stepped-wheel-hub-with-1-4-hardware-pm-39stfl-1-4\"\u003ePerformance Mfg UltraFree Left Front Stepped Hub - 1\/4\" Hardware - Oval Racing\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/ultralight-right-front-stepped-hub-1-4-hardware-only-pm-39st-1-4\"\u003eUltralight Right Front Stepped Hub with 1\/4\" Hardware\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/ultralite-5-8-front-hub-1-4-hardware-only-bullet-tip-studs-pm-39-1-4\"\u003eUltraLite 5\/8\" Front Hub with 1\/4\" Bullet Tip Studs for Precision Kart Handling\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/ultrafree-left-front-wheel-hub-with-1-4-hardware-pm-39f-1-4\"\u003eUltraFree Left Front Hub Equipped with 1\/4 Inch Hardware for Karts\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Performance Mfg","offers":[{"title":"Default Title","offer_id":52562638078270,"sku":"BNKWS","price":19.87,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/wheelhub-1-4-stepped-wheel-studs-big-1-2-hex-nuts-12-pack-bnkws.jpg?v=1763113396"},{"product_id":"wheel-hub-bolt-kit-5-16-3-vkhbk516","title":"Robust 5\/16\" Wheel Hub Bolt Kit (3-Pack) for Kart Durability","description":"\u003cp\u003eStep up to heavier-duty fastening with these 5\/16\" wheel hub bolts in a convenient 3-pack, perfect for demanding kart applications.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eLarger diameter provides extra holding power against track forces\u003c\/li\u003e\n\u003cli\u003eIdeal for reinforced hubs in aggressive driving styles\u003c\/li\u003e\n\u003cli\u003ePack format (SKU: VKHBK516) aids in efficient inventory management\u003c\/li\u003e\n\u003cli\u003eReduces the need for frequent retightening during events\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eBy ensuring hubs remain rock-solid, these bolts contribute to consistent power delivery and reduced drag, letting you focus on refining your racing technique. Great for both stock and modified karts, they support faster setup times and fewer mechanical issues over a season.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Why should I upgrade to 5\/16\" bolts for my kart wheel hubs?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The 5\/16\" diameter offers increased shear strength compared to standard smaller hardware. This is essential for aggressive driving styles and high-grip track conditions where standard bolts may experience fatigue or loosening.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Are these bolts compatible with all kart wheel hubs?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e These bolts are designed for hubs that accept 5\/16\" hardware. Please verify your current hub's bolt hole diameter before installation to ensure a proper fit.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How often should I check these bolts during a race weekend?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e While these bolts are designed to reduce the need for frequent retightening, it is best practice to perform a quick torque check before every session to ensure your hub remains rock-solid and safe.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I use these for other parts of the kart?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e While these are optimized for wheel hubs, they are high-quality 5\/16\" hardware. However, always ensure the length and thread pitch match the specific requirements of the component you are mounting.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products From Vendor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/1-1-4-rear-wheel-hub-extended-black-vkhrrdl\"\u003eExtended 1 1\/4\" Black Rear Wheel Hub with Keyway for Offset Karts\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/1-rear-wheel-hub-silver-vkhr1\"\u003ePrecision 1\" Silver Rear Wheel Hub for Agile Kart Performance\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/1-rear-wheel-hub-black-vkhr1b\"\u003eRobust 1\" Black Rear Wheel Hub for Solid Kart Rear-End Stability\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/1-1-4-rear-wheel-hub-silver-vkhr125\"\u003eLightweight 1 1\/4\" Silver Rear Wheel Hub for Enhanced Kart Speed\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/1-1-4-rear-wheel-hub-black-vkhr125b\"\u003eDurable 1 1\/4\" Black Rear Wheel Hub for Reliable Kart Traction\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VK","offers":[{"title":"Default Title","offer_id":52562639847742,"sku":"VKHBK516","price":3.73,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/wheelhub-wheel-hub-bolt-kit-5-16-3-vkhbk516.jpg?v=1763113432"},{"product_id":"wheel-hub-bolt-kit-1-4-3-vkhbk14","title":"Van-K 1\/4\" Wheel Hub Bolt Kit - 3-Pack - Universal Karting","description":"\u003cp\u003eLocking down your wheel hubs with precision-machined fasteners is non-negotiable when you're sourcing the best kart parts online for your racing chassis. The Van-K 1\/4\" Wheel Hub Bolt Kit delivers the exact clamping force required to keep your wheels planted through high-G corners and aggressive braking zones. Designed specifically for competitive karting applications, this 3-pack of 1\/4\" bolts ensures your wheel hubs remain perfectly aligned, eliminating the vibration and rotational slop that can rob your momentum on the track.\u003c\/p\u003e\u003ch2\u003eBeyond Torque Parts: Securing Your Rotational Mass\u003c\/h2\u003e\u003cp\u003eWhen you're pushing the limits, every piece of hardware matters. While many drivers obsess over high-end torque parts to maximize power delivery, they often overlook the fasteners transferring that power to the track. These 1\/4\" bolts are engineered to withstand the intense lateral loads generated by modern racing slicks. The high-tensile steel construction prevents stretching under heavy torque, ensuring your wheel assemblies stay tight heat after heat.\u003c\/p\u003e\u003ch2\u003eWrenching in Your Kart Racing Suits: Pit-Ready Hardware\u003c\/h2\u003e\u003cp\u003eWhether you are making quick adjustments in the hot pits while still wearing your kart racing suits or doing a full off-season rebuild, having reliable hardware is the foundation of a fast setup. Proper torque application is critical for maintaining wheel balance and preventing hub distortion. This kit provides the exact dimensions needed for standard 1\/4\" hub registers, allowing for seamless integration with Van-K wheels and other popular racing brands.\u003c\/p\u003e\u003ch2\u003eMore Reliable Than a Fresh Carburetor Kit\u003c\/h2\u003e\u003cp\u003eJust as you wouldn't compromise on a precision carburetor kit for engine tuning, your hub fasteners demand the same level of scrutiny. If you've been searching for 'go karts for sale near me' to start your racing journey, upgrading your rolling chassis with premium hardware like this is the first step toward the podium.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Tensile Steel Construction:\u003c\/strong\u003e Resists stretching and fatigue under extreme racing conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision 1\/4\" Threading:\u003c\/strong\u003e Ensures smooth torque application and vibration-proof locking.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptimized Clamping Load:\u003c\/strong\u003e Distributes force evenly across the wheel hub to prevent warping.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUniversal Compatibility:\u003c\/strong\u003e Fits standard 1\/4\" hub registers on sprint, oval, and dirt karts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorrosion-Resistant Finish:\u003c\/strong\u003e Protects against track debris, moisture, and harsh cleaning solvents.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConvenient 3-Pack:\u003c\/strong\u003e Provides exactly what you need for a single hub replacement or essential pit spares.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReduced Rotational Mass:\u003c\/strong\u003e Compact bolt head design minimizes unsprung weight for faster acceleration out of the apex.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Van-K Wheels","offers":[{"title":"Default Title","offer_id":52562644369726,"sku":"VKHBK14","price":2.68,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/wheelhub-wheel-hub-bolt-kit-1-4-3-vkhbk14.jpg?v=1763113510"},{"product_id":"ultralite-5-8-front-hub-1-4-hardware-only-bullet-tip-studs-pm-39-1-4","title":"UltraLite 5\/8\" Front Hub with 1\/4\" Bullet Tip Studs for Precision Kart Handling","description":"\u003cp\u003ePrecision engineering meets lightweight design in this UltraLite 5\/8\" Front Hub, tailored for kart racers who demand every ounce of speed. Crafted from high-strength aluminum, it minimizes rotational mass to let your kart accelerate quicker out of corners and maintain momentum through straightaways. The 1\/4\" hardware compatibility allows seamless integration with existing wheel systems, while bullet tip studs provide secure, vibration-free mounting that withstands the rigors of high-speed racing.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eUltra-light construction reduces unsprung weight, improving suspension response and handling precision.\u003c\/li\u003e\n\u003cli\u003eBullet tip studs ensure easy wheel installation and removal, saving precious time during pit stops.\u003c\/li\u003e\n\u003cli\u003eCompatible with 5\/8\" axles, ideal for front-wheel applications in sprint and road course karts.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eWhether you're navigating tight tracks or pushing limits in endurance races, this hub helps optimize your setup for better tire contact and reduced drag. Racers report noticeable improvements in cornering speed, thanks to the hub's balanced design that promotes even weight distribution. For those upgrading from heavier stock hubs, the difference in track feel is immediate—sharper steering and less fatigue on longer sessions.\u003c\/p\u003e\u003cp\u003eBuilt to last with corrosion-resistant finishes, it's a reliable choice for both junior and senior divisions. Pair it with performance bearings for maximum efficiency. SKU: PM-39-1\/4. Elevate your kart's front-end performance and shave seconds off your personal bests with this essential component.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is this hub compatible with all kart chassis?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e This UltraLite hub is designed for 5\/8\" spindles, which is a standard size for many sprint and road course karts. Please verify your spindle diameter before purchasing to ensure a proper fit.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Why should I choose 1\/4\" hardware over 5\/16\"?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The 1\/4\" hardware is ideal for racers looking to minimize rotating mass and unsprung weight. It is the preferred choice for classes where every ounce counts toward acceleration and steering responsiveness.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How do the bullet tip studs help during pit stops?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The tapered bullet tip design acts as a guide, allowing you to slide your wheel onto the hub studs much faster than with standard flat-ended studs, significantly reducing the time required for tire changes.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What maintenance is required for these hubs?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e To maintain peak performance, periodically inspect the studs for any signs of wear or bending. We recommend cleaning the hub assembly after race days and ensuring your bearings are properly greased to maintain smooth rotation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I use this hub for both junior and senior divisions?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, the high-strength aluminum construction is engineered to be durable enough for both junior and senior racing divisions while providing the weight savings required for competitive setups.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products From Vendor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/ultralite-5-8-front-hub-5-16-hardware-only-pm-39-5-16\"\u003eUltraLite 5\/8\" Front Hub with 5\/16\" Hardware and Rubber Sealed Bearings\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/ultrafree-left-front-wheel-hub-with-1-4-hardware-pm-39f-1-4\"\u003eUltraFree Left Front Hub Equipped with 1\/4 Inch Hardware for Karts\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/ultralight-right-front-stepped-hub-1-4-hardware-only-pm-39st-1-4\"\u003eUltralight Right Front Stepped Hub with 1\/4\" Hardware\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/ultrafree-left-front-stepped-wheel-hub-with-1-4-hardware-pm-39stfl-1-4\"\u003ePerformance Mfg UltraFree Left Front Stepped Hub - 1\/4\" Hardware - Oval Racing\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/ultrafree-right-front-stepped-wheel-hub-with-1-4-hardware-pm-39stf-1-4\"\u003ePerformance Mfg UltraFree Right Front Stepped Hub - 1\/4\" Hardware - Racing Spec\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Performance Mfg","offers":[{"title":"Default Title","offer_id":52562647056702,"sku":"PM-39-1\/4","price":32.82,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/standardwheelhubsfront-ultralite-5-8-front-hub-1-4-hardware-only-bullet-tip-studs-pm-39-1-4.jpg?v=1763113571"},{"product_id":"ultralite-5-8-front-hub-5-16-hardware-only-pm-39-5-16","title":"UltraLite 5\/8\" Front Hub with 5\/16\" Hardware and Rubber Sealed Bearings","description":"\u003cul\u003e\n\u003cli\u003eEquipped with dual rubber sealed 5\/8\" ID bearings for smooth, low-friction rotation that cuts down on power loss.\u003c\/li\u003e\n\u003cli\u003eSingle bolt pattern designed exclusively for 5\/16-24 hardware, ensuring a rock-solid connection to your wheels.\u003c\/li\u003e\n\u003cli\u003eComplete kit includes three bullet tip 5\/16\" bolts and matching serrated flange nuts for hassle-free assembly.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eBlack anodized finish not only looks sleek but also provides robust protection against track-side elements, keeping your hub performing lap after lap. This front hub shines in high-stakes environments where every detail counts—think quicker response times during aggressive overtakes or stable handling through chicanes. By shedding unnecessary weight, it allows your kart's engine to focus on propulsion rather than overcoming inertia.\u003c\/p\u003e\u003cp\u003eIdeal for teams running offset chassis or those fine-tuning for specific track conditions, the UltraLite hub integrates effortlessly into most standard front axle setups. Maintenance is simplified with sealed bearings that repel dirt and moisture, extending service intervals and keeping you on the track longer. Racers appreciate the confidence it instills, knowing their wheels stay secure even under maximum lateral loads.\u003c\/p\u003e\u003cp\u003eTransform your kart's dynamics with this precision piece. Whether chasing podium finishes or honing skills in practice, the benefits compound: faster acceleration, better fuel efficiency from reduced drag, and an overall edge in competitive fields. SKU: PM-39-5\/16. Invest in reliability that propels you ahead.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What size bearings are included with this hub?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e This hub comes equipped with dual rubber-sealed 5\/8\" ID bearings, designed to provide smooth, low-friction rotation while keeping dirt and moisture out.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does this hub come with the necessary wheel hardware?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, this kit is complete. It includes three bullet-tip 5\/16\"-24 bolts and matching serrated flange nuts for a secure, hassle-free installation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is this hub compatible with all kart chassis?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The UltraLite hub is designed to integrate effortlessly into most standard front axle setups. It is particularly ideal for teams running offset chassis or those looking to fine-tune handling for specific track conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How do I maintain the bearings in this hub?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The included rubber-sealed bearings are designed to repel track-side elements, which helps extend service intervals. Simply inspect them periodically for smooth rotation and ensure the hub remains clean after racing in wet or dusty conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Why should I choose this hub over a standard steel version?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e This hub is engineered to shed unnecessary weight, which reduces inertia and allows your engine to focus more power on propulsion. The black anodized finish also provides superior protection against corrosion compared to standard finishes.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products From Vendor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/metric-pattern-front-hub-with-5-8-bearings-5-16-hardware-only-pm-39f-58m\"\u003ePerformance Mfg Metric Front Hub - 5\/8\" Bearings \u0026amp; 5\/16\" Hardware - All Classes\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/ultralite-5-8-front-hub-1-4-hardware-only-bullet-tip-studs-pm-39-1-4\"\u003eUltraLite 5\/8\" Front Hub with 1\/4\" Bullet Tip Studs for Precision Kart Handling\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/17mm-front-hub-usa-pattern-5-16-hardware-only-included-pm-39f-17us\"\u003e17mm USA Pattern Front Hub with Included 5\/16\" Hardware\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/metric-pattern-front-hub-with-17mm-bearings-5-16-hardware-only-pm-39f-17m\"\u003eMetric Pattern Front Hub Featuring 17mm Bearings and 5\/16 Hardware\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/pm-116116-seat-weight-bolt-mounting-kit-pm-116116\"\u003eDurable Seat Weight Bolt Mounting Kit for Kart Longevity\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Performance Mfg","offers":[{"title":"Default Title","offer_id":52562647122238,"sku":"PM-39-5\/16","price":32.82,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/standardwheelhubsfront-ultralite-5-8-front-hub-5-16-hardware-only-pm-39-5-16.jpg?v=1763113572"},{"product_id":"5-16-flanged-nuts-smooth-each-fn516","title":"High-Strength 5\/16\" Smooth Flanged Nuts for Kart Wheel Security","description":"\u003cp\u003eCrafted with fine 5\/16-24 threads in the USA, these smooth flanged nuts offer a clean, damage-free way to lock down kart wheels. Non-serrated surfaces protect mating parts while providing a solid grip.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eIdeal for high-torque applications in competitive racing\u003c\/li\u003e\n\u003cli\u003ePromotes precise alignment to maintain straight-line speed\u003c\/li\u003e\n\u003cli\u003eSold each for flexible, on-demand replacements (SKU: FN516)\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eExperience fewer adjustments and more consistent performance as these nuts resist loosening over long runs, helping you stay in the lead pack.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Why should I choose smooth flanged nuts over serrated ones for my kart wheels?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Smooth flanged nuts are designed to protect the surface of your wheel hubs. While serrated nuts provide extra bite, they can gouge or damage the finish of high-quality aluminum hubs. These smooth nuts provide a secure, high-torque hold without compromising the integrity of your wheel mounting surface.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Are these nuts compatible with standard 5\/16\" wheel studs?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, these are precision-machined with 5\/16-24 threads, making them a perfect fit for standard racing wheel studs that utilize this common thread pitch.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How many nuts should I order for a full kart setup?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e These are sold individually to allow for flexible replacement. Most standard kart setups require 3 or 4 nuts per wheel depending on your hub configuration, so we recommend ordering a few extra to keep in your trackside toolbox for quick, on-demand replacements.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Do I need to use thread locker with these nuts?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Because these are engineered for high-torque applications and resist loosening over long runs, they typically hold very well on their own. However, always ensure your wheel studs are clean and free of debris before installation to ensure the best possible grip.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products From Vendor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/40mm-pmi-rear-wheel-hub-w-dual-patterns-double-lock-style-pm-38dl-40\"\u003e40mm PMI Double Lock Rear Wheel Hub with Dual Patterns for Secure Racing\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/metric-pattern-front-hub-with-17mm-bearings-5-16-hardware-only-pm-39f-17m\"\u003eMetric Pattern Front Hub Featuring 17mm Bearings and 5\/16 Hardware\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/17mm-front-hub-usa-pattern-5-16-hardware-only-included-pm-39f-17us\"\u003e17mm USA Pattern Front Hub with Included 5\/16\" Hardware\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/metric-pattern-front-hub-with-5-8-bearings-5-16-hardware-only-pm-39f-58m\"\u003ePerformance Mfg Metric Front Hub - 5\/8\" Bearings \u0026amp; 5\/16\" Hardware - All Classes\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/ultralight-right-rear-double-lock-hub-5-16-hardware-only-pm-38dl-5-16\"\u003eUltralight Right Rear Double Lock Hub for 5\/16 Inch Hardware Strength\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Performance Mfg","offers":[{"title":"Default Title","offer_id":52562651087166,"sku":"FN516","price":0.32,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/wheelhub-5-16-flanged-nuts-smooth-each-fn516.jpg?v=1763113652"},{"product_id":"metric-pattern-1-250-bore-wheel-hub-silver-bmc7125hi","title":"Silver Metric Pattern 1.250\" Bore Rear Wheel Hub with Studs and Nuts","description":"\u003cp\u003eMetric precision meets American robustness in this 1.250\" bore silver wheel hub, designed exclusively for metric pattern wheels. Pre-installed studs and included flange nuts make wheel changes a snap, cutting pit time and keeping you competitive. The silver finish not only appeals aesthetically but also dissipates heat effectively, vital for sustained high-speed runs.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e1.250-inch bore fits standard metric axles with zero play.\u003c\/li\u003e\n\u003cli\u003eIndustry-standard metric studs for universal wheel compatibility.\u003c\/li\u003e\n\u003cli\u003eFlange nuts provide secure, reusable fastening without stripping.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eFor karts running European-style components, this hub bridges gaps in availability, ensuring your rear setup performs at peak. It promotes even stud tension, which is crucial for maintaining wheel centering and avoiding vibrations that sap power. Racers in metric-heavy classes like Rotax find it indispensable for consistent stagger adjustments.\u003c\/p\u003e\u003cp\u003eThe lightweight silver alloy reduces unsprung weight, allowing sharper suspension reactions and better bump absorption on uneven surfaces. Organize your metric toolkit around this hub—its complete kit means no hunting for loose parts. In wet races, the secure mounting prevents loosening, preserving traction where it counts.\u003c\/p\u003e\u003cp\u003eUpgrade to this hub and experience the fluidity in rear dynamics; it's like giving your kart a set of grippier shoes. Perfect for teams mixing brands, it standardizes rear fitment without custom work. SKU: BMC7125HI. Metric mastery for faster tracks.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is this hub compatible with all kart axles?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e This hub is specifically designed for 1.250\" (1-1\/4\") diameter axles. Please verify your axle size before purchasing, as it will not fit standard 40mm or 50mm racing axles.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does this hub come with the necessary hardware?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, the BMC7125HI comes with pre-installed metric studs and matching flange nuts, allowing for immediate installation and secure wheel mounting.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Why is the silver finish beneficial for racing?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Beyond the aesthetic appeal, the silver alloy finish is designed to assist in heat dissipation, which helps maintain consistent performance during high-speed, sustained racing sessions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I use this hub for Rotax or other metric-heavy classes?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Absolutely. This hub is engineered for European-style components and metric-pattern wheels, making it an ideal choice for classes like Rotax where precise wheel centering and consistent stud tension are required.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How does this hub affect my kart's handling?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The lightweight construction reduces unsprung weight, which allows for sharper suspension reactions and improved bump absorption, leading to better overall rear-end dynamics.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products From Vendor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/bmc7625him-metric-pattern-front-hubs-with-17mm-bearings-bmc7625him\"\u003eMetric Pattern Front Hubs with 17mm Bearings and Silver Finish\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"BMC","offers":[{"title":"Default Title","offer_id":52562654462270,"sku":"BMC7125HI","price":46.76,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/standardwheelhubsrear-metric-pattern-1-250-bore-wheel-hub-silver-bmc7125hi.jpg?v=1763113719"},{"product_id":"metric-pattern-front-hub-with-17mm-bearings-5-16-hardware-only-pm-39f-17m","title":"Metric Pattern Front Hub Featuring 17mm Bearings and 5\/16 Hardware","description":"\u003cstrong\u003eUnlock smoother front-wheel dynamics\u003c\/strong\u003e with this metric pattern front hub, pre-installed with high-quality 17mm bearings and designed exclusively for 5\/16 hardware. It accepts only 5\/16-24 fittings, including bullet tip studs and serrated flanged nuts for a rock-solid connection that withstands the rigors of kart racing.\u003cp\u003eThe integrated crush sleeve prevents bearing damage during assembly, promoting longevity and consistent performance. This setup minimizes play in the front wheels, translating to sharper steering responses and quicker lap times—essential for overtaking rivals in tight races.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSeamless Compatibility: Tailored for metric chassis, ensuring easy bolt-on installation without custom modifications.\u003c\/li\u003e\n\u003cli\u003eFriction Reduction: 17mm bearings spin freely, cutting energy loss and enhancing acceleration off the line.\u003c\/li\u003e\n\u003cli\u003eTrack-Ready Durability: Built to handle high RPMs and impacts, keeping your kart organized and pit stops minimal.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eVisualize gliding through chicanes with pinpoint accuracy; this hub makes it possible by stabilizing the front end against road imperfections. For mechanics, the included hardware streamlines wheel changes, saving precious time during practice or race days. Performance Mfg's engineering shines here, focusing on lightweight construction that doesn't sacrifice strength.\u003c\/p\u003e\u003cp\u003eIdeal for both novice and seasoned drivers, it supports fine-tuning camber and toe for personalized handling. The result? A kart that feels alive under your control, pushing boundaries of speed and safety. SKU: PM-39F-17M elevates your setup from standard to superior.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is this hub compatible with all kart chassis?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e This hub is specifically designed for metric chassis. Please ensure your spindle size is 17mm before purchasing to ensure a proper fit.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What hardware is required for this hub?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e This hub is engineered exclusively for 5\/16-24 hardware. It is designed to work with bullet tip studs and serrated flanged nuts to ensure a secure, race-ready connection.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Why is the integrated crush sleeve important?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The crush sleeve is a critical component that prevents the inner races of the bearings from being crushed or damaged when you tighten the axle nut, ensuring the bearings spin freely and last longer.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I use 1\/4\" hardware with this hub?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e No, this specific model (PM-39F-17M) is machined specifically for 5\/16\" hardware. Using smaller hardware will result in a loose fit and potential safety issues on the track.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How does this hub improve my kart's handling?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e By utilizing high-quality 17mm bearings and a precision-fit design, this hub minimizes front-end play. This reduction in slop provides more direct steering feedback and sharper turn-in response.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products From Vendor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/17mm-front-hub-usa-pattern-5-16-hardware-only-included-pm-39f-17us\"\u003e17mm USA Pattern Front Hub with Included 5\/16\" Hardware\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/metric-pattern-front-hub-with-5-8-bearings-5-16-hardware-only-pm-39f-58m\"\u003ePerformance Mfg Metric Front Hub - 5\/8\" Bearings \u0026amp; 5\/16\" Hardware - All Classes\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/pm-3-19-metric-toe-lock-19mm-pm-3-19\"\u003e19mm Metric Toe Lock for Kart Steering Alignment\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/pm-116116-seat-weight-bolt-mounting-kit-pm-116116\"\u003eDurable Seat Weight Bolt Mounting Kit for Kart Longevity\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Performance Mfg","offers":[{"title":"Default Title","offer_id":52562654527806,"sku":"PM-39F-17M","price":44.77,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/wheelshubsbyperformancemfg-metric-pattern-front-hub-with-17mm-bearings-5-16-hardware-only-pm-39f-17m.jpg?v=1763113721"},{"product_id":"pkt-30mm-x-30mm-rear-wheel-hub-sold-each-pkt30x30rh","title":"PKT Compact 30mm x 30mm Rear Wheel Hub - Metric Bore - Cadet\/Junior Class","description":"\u003cp\u003eTrimming unsprung weight at the rear axle is critical for maximizing acceleration out of tight hairpins, and as a premier go kart shop, we know the PKT Compact 30mm x 30mm Rear Wheel Hub delivers exactly that advantage. Engineered specifically for metric chassis setups, this diminutive powerhouse provides a low-profile mount that keeps your center of gravity pinned to the tarmac. By reducing rotational mass on the drivetrain, young drivers and cadet racers experience snappier throttle response and superior cornering grip.\u003c\/p\u003e\u003ch2\u003ePrecision Engineering for Metric Chassis Dynamics\u003c\/h2\u003e\u003cp\u003eIn spec racing classes where every ounce of performance matters, maintaining precise tolerances prevents axle slop and ensures 100% of your engine output reaches the pavement. Just like dialing in your steering wheel and front-end geometry, optimizing your rear track width with these compact 30mm hubs allows for meticulous setup tweaks between heats. The high-tensile, corrosion-resistant alloy construction stands up to the brutal abuse of junior-class racing, shrugging off curb strikes and gravel trap excursions while maintaining perfect concentricity.\u003c\/p\u003e\u003ch2\u003eEssential Maintenance and Trackside Tuning\u003c\/h2\u003e\u003cp\u003eWhether you are performing routine maintenance like changing motor engine oil and swapping engine filters, or doing a complete rear-end overhaul, the PKT 30mm hub's drop-in compatibility makes trackside adjustments seamless. Its anti-rotation slots and standard metric hardware compatibility mean less time wrenching and more time turning laps. For those constantly searching for the best go karts for sale near me, upgrading your current cadet chassis with PKT's precision-machined hubs is often the smarter path to the podium.\u003c\/p\u003e\u003ch2\u003eTechnical Specifications \u0026amp; Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e30mm x 30mm Profile:\u003c\/strong\u003e Ultra-compact dimensions drastically reduce unsprung rotational mass for faster acceleration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMetric Axle Compatibility:\u003c\/strong\u003e Precision-bored to fit standard 30mm metric rear axles with zero slop.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Tensile Alloy Construction:\u003c\/strong\u003e Aircraft-grade aluminum ensures maximum durability against curb strikes and high-G cornering loads.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptimized Contact Patch:\u003c\/strong\u003e Ideal for narrower entry-level tires, maximizing wet-weather grip and dry-track stability.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAnti-Rotation Slots:\u003c\/strong\u003e Engineered to lock securely onto the axle keyway, preventing hub slip under heavy torque.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorrosion-Resistant Finish:\u003c\/strong\u003e Anodized coating protects against harsh track elements, degreasers, and brake dust.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndividual Sizing:\u003c\/strong\u003e Sold individually to allow cost-effective stocking of spares for multi-kart teams and driving coaches.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cdiv style=\"text-align: center; color: #cc0000 !important; font-size: 1.4em;\"\u003eWe did not have a High Resolution of this item, this item picture may be different, but the description and title is accurate. The first two images are AI generated. The third image is accurate, but is not high resolution. Email if you would like a more detail picture before ordering.\u003c\/div\u003e\u003cdiv style=\"text-align: center; color: #cc0000 !important; font-size: 1.4em;\"\u003eWe did not have a High Resolution of this item, this item picture may be different, but the description and title is accurate. The first two images are AI generated. The third image is accurate, but is not high resolution. Email if you would like a more detail picture before ordering.\u003c\/div\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How do I know if this 30mm hub is compatible with my kart?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e This hub is designed specifically for 30mm metric rear axles. Please verify your axle diameter before purchasing, as this will not fit 40mm or 50mm axle setups common in senior classes.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does this hub come with the necessary hardware to mount to the axle?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e This product includes the hub itself. It is designed to work with standard metric hardware and utilizes anti-rotation slots to lock onto your existing axle keyway. Ensure your axle keys are in good condition for a secure fit.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Why should I choose a compact hub over a standard length hub?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The PKT Compact hub is engineered to reduce unsprung rotational mass. By trimming this weight, you improve your kart's acceleration out of corners and achieve a more responsive throttle, which is particularly beneficial for Cadet and Junior classes.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Are these hubs sold as a pair or individually?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e These hubs are sold individually. This allows you to purchase a single replacement if you experience damage during a race or to stock spares for your team efficiently.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How do I maintain these hubs to ensure they last?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The hubs feature a corrosion-resistant anodized finish. To maintain them, simply clean off brake dust and track debris after each race weekend. Periodically inspect the anti-rotation slots for any signs of wear to ensure they remain locked securely on the axle.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products From Vendor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/pkt-30mm-axle-3-0mm-pkt30-1000-30\"\u003ePKT 30mm x 1000mm Racing Axle - 3.0mm Wall - Heavy Duty Sprint \/ Outlaw\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/pkt-30mm-axle-3-9mm-pkt30-1000-d39\"\u003ePKT 30mm Axle with 3.9mm Offset for Superior Track Handling\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/pkt-30mm-axle-2-1mm-pkt30-1000-21\"\u003ePKT 30mm 1000mm Axle 2.1mm Wall for Balanced Kart Racing Performance\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/pkt-30mm-axle-2-5mm-pkt30-1000-d25\"\u003ePKT 30mm 1000mm Axle - 2.5mm Wall - CIK\/FIA Compliant\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/pktak8-axle-key-for-40mm-axles-sold-each-pktak8\"\u003eHeavy-Duty Axle Key for 40mm and 30mm PKT Kart Axles\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PKT","offers":[{"title":"Default Title","offer_id":52562657083710,"sku":"PKT30X30RH","price":59.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/pkt-30mm-x-30mm-rear-wheel-hub-sold-each-pkt30x30rh_1.jpg?v=1773094375"},{"product_id":"pkt-40mm-x-35mm-rear-wheel-hub-pkt40x35rh","title":"PKT 40mm x 35mm Shorty Rear Wheel Hub - Metric 52mm Pattern - LO206","description":"\u003cp\u003eWhen sourcing new parts from a premier go kart shop, every ounce of rotational mass matters. The PKT 40mm x 35mm Shorty Rear Wheel Hub is engineered to free up your chassis, specifically designed to let the axle do its work without binding. By reducing the footprint on the axle to a mere 35mm, this hub minimizes lateral stiffness, allowing your kart to flex naturally and carry maximum momentum through the apex. It's the ultimate upgrade for racers looking to maximize their briggs and stratton lo206 horsepower output by eliminating drivetrain drag and optimizing rear grip.\u003c\/p\u003e\u003ch2\u003ePrecision Engineering Beyond Standard New Parts\u003c\/h2\u003e\u003cp\u003eUnlike standard cast hubs, the PKT Shorty is CNC-machined from aerospace-grade aluminum, delivering a rigid yet lightweight interface between your axle and wheels. The single 8mm pinch bolt provides superior clamping force without distorting the axle tube. To guarantee zero lateral movement under heavy cornering loads, PKT integrated dual 6mm set screws that lock the 8mm key firmly in place. This ensures your rear track width remains perfectly consistent, lap after grueling lap.\u003c\/p\u003e\u003ch2\u003eComplement Your Setup: From Brake Pistons to Engine Bearings\u003c\/h2\u003e\u003cp\u003eA balanced chassis requires harmony across all components. Just as you wouldn't compromise on high-performance brake pistons for stopping power or low-friction engine bearings for top-end speed, your wheel hubs demand the same level of scrutiny. The 52mm metric bolt pattern comes standard with 8mm zinc-plated series 4100 wheel studs, providing bulletproof reliability during rapid tire changes. Finished in a sleek black anodize with laser engraving, it looks as fast as it performs.\u003c\/p\u003e\u003ch2\u003eMaximize Tuning Potential with a Fresh Carb Kit and Hub Geometry\u003c\/h2\u003e\u003cp\u003eTuning for changing track conditions is where races are won. While adjusting your fuel mixture with a precision carb kit handles the engine's power delivery, dialing in your rear track width with these 35mm hubs dictates how that power translates to the asphalt. The shorter hub length gives you a wider range of adjustment on a 40mm axle, allowing you to widen or narrow the rear track to induce or reduce mechanical grip as needed.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptimized 35mm Width:\u003c\/strong\u003e Reduces axle bind and allows the chassis to flex naturally for improved corner speed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e40mm Axle Compatibility:\u003c\/strong\u003e Precision bored for a flawless fit on all standard 40mm metric kart axles.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuperior Clamping System:\u003c\/strong\u003e Features a robust 8mm pinch bolt to secure the hub without lateral slipping.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual Set Screw Design:\u003c\/strong\u003e Twin 6mm set screws lock the 8mm keyway firmly, preventing keyway wallow under load.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMetric 52mm Bolt Pattern:\u003c\/strong\u003e Industry-standard spacing equipped with high-strength 8mm zinc-plated 4100 series studs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAerospace-Grade Aluminum:\u003c\/strong\u003e CNC-machined construction shaves rotational weight while maintaining structural integrity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBlack Anodized Finish:\u003c\/strong\u003e Protects against corrosion and track debris, complete with premium laser-engraved PKT branding.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Why should I choose a 35mm \"Shorty\" hub over a standard length hub?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The 35mm length reduces the footprint on your axle, which decreases lateral stiffness. This allows your chassis to flex more naturally, helping the kart \"lift\" the inside rear wheel more effectively and carry better momentum through corners, especially in LO206 classes.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Will this hub fit my current kart setup?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e This hub is precision-bored for all standard 40mm metric kart axles. It features a 52mm bolt pattern, which is the industry standard for most racing wheels.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How do the dual set screws improve performance?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The dual 6mm set screws are designed to lock the 8mm keyway firmly in place. This prevents \"keyway wallow,\" ensuring your rear track width remains consistent and preventing the hub from shifting under heavy cornering loads.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Do I need special tools to install these hubs?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Installation is straightforward using standard metric hex keys for the pinch bolt and set screws. Ensure your axle is clean and free of debris before sliding the hub on to ensure a perfect fit.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I use these hubs with different axle wall thicknesses?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, these hubs are compatible with various 40mm axle wall thicknesses. However, because the hub affects chassis flex, you may need to adjust your axle choice (e.g., moving to a different stiffness) to complement the change in hub length.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products From Vendor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/pkt-40mm-axle-3-2mm-pkt40-1040-d32\"\u003ePKT 40mm Axle 3.2mm Offset for Robust Track Stability\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/pkt-40mm-axle-2-5mm-pkt40-1040-d25\"\u003ePKT 40mm x 1040mm Axle - 2.5mm Wall - LO206 \/ Cadet\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/pkt-40mm-axle-2-0mm-pkt40-1040-d20\"\u003ePKT 40mm Axle 2.0mm Offset for Lightweight Track Agility\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/pktak8-axle-key-for-40mm-axles-sold-each-pktak8\"\u003eHeavy-Duty Axle Key for 40mm and 30mm PKT Kart Axles\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PKT","offers":[{"title":"Default Title","offer_id":52562657149246,"sku":"PKT40X35RH","price":92.96,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/metricwheelhubs-pkt-40mm-x-35mm-rear-wheel-hub-pkt40x35rh.jpg?v=1763113786"},{"product_id":"ws1834-1-8-wheel-spacer-black-3-4-ws1834","title":"Black Anodized 1\/8\" Spacer for 3\/4\" Spindles and Clutches","description":"Versatile and tough, the 1\/8\" Wheel Spacer in black anodized aluminum suits 3\/4\" spindles while doubling as a clutch spacer.\u003cp\u003eFeatures a chamfer for crankshaft compatibility.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eOEM quality used in various clutch brands.\u003c\/li\u003e\n\u003cli\u003eEnhances spacing accuracy for vibration-free runs.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eIt organizes wheel and clutch setups by offering consistent thickness, aiding faster adjustments at the track. SKU: WS1834\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can this spacer be used on both spindles and clutches?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, this 1\/8\" spacer is designed with a specific chamfer that makes it compatible with both 3\/4\" kart spindles and various racing clutch setups.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Why is the chamfer on this spacer important?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The chamfer is essential for crankshaft compatibility, ensuring the spacer sits flush against the clutch hub or engine components without interference.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How does using a precision spacer improve my kart's performance?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Using consistent, high-quality spacers helps maintain proper alignment and spacing accuracy, which reduces vibration and ensures your wheel or clutch assembly runs smoothly.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is this spacer compatible with other sizes?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e This specific spacer is precision-machined for 3\/4\" shafts. If you require a different thickness for your setup, you may need to stack spacers or choose a different size to achieve your desired offset.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products From Vendor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/ws1434-1-4-wheel-spacer-black-3-4-ws1434\"\u003e1\/4\" Black Anodized Spacer for 3\/4\" Kart Spindles\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Swift Karting","offers":[{"title":"Default Title","offer_id":52562657411390,"sku":"WS1834","price":1.15,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/clutchspacers-ws1834-1-8-wheel-spacer-black-3-4-ws1834.jpg?v=1763113792"},{"product_id":"1-rear-wheel-hub-silver-vkhr1","title":"Precision 1\" Silver Rear Wheel Hub for Agile Kart Performance","description":"\u003cp\u003eSeeking that edge in rear-wheel finesse? This 1\" silver rear wheel hub delivers with its streamlined profile and expert craftsmanship. The one-inch diameter fits snugly on slim axles, minimizing weight to let your kart dart through apexes with ease. Silver finishing adds a layer of thermal efficiency, keeping components cool under pressure.\u003c\/p\u003e\u003cp\u003eIt's more than metal—it's a catalyst for better dynamics. By ensuring zero slippage, it maximizes the efficiency of your drivetrain, turning more horsepower into forward motion. Ideal for tracks with sweeping corners, where rear stability prevents fishtailing and preserves momentum.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eHigh-grade alloy for reduced mass without compromising integrity.\u003c\/li\u003e\n\u003cli\u003eSilver anodizing for longevity and easy cleaning after muddy runs.\u003c\/li\u003e\n\u003cli\u003eStandard threading for quick hardware swaps in the pits.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eOrganize your garage knowing this hub's versatility covers multiple chassis types. Pair it with performance sprockets for tuned gear ratios that suit your style—short sprints or long hauls. Feedback from users highlights its role in smoother shifts and predictable behavior, allowing bolder driving without fear of wheel hop.\u003c\/p\u003e\u003cp\u003eFor emerging talents in cadet classes, it's a smart upgrade that grows with skill levels. The silver gleam isn't just visual; it signals quality that stands up to scrutiny. Equip your kart and feel the agility unlock. SKU: VKHR1. Precision in every rotation.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is this 1\" hub compatible with all kart axles?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e This hub is specifically designed for 1-inch diameter axles. Please verify your axle size before purchasing, as it will not fit standard 1 1\/4\" racing axles.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How does the silver anodized finish benefit my kart?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Beyond the aesthetic appeal, the silver anodizing provides a protective layer that resists corrosion and makes cleaning off track grime and mud significantly easier after a race day.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Will this hub help reduce wheel hop?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes. By ensuring a snug, zero-slippage fit on the axle, this hub helps maintain consistent power transfer and rear-end stability, which is essential for minimizing wheel hop during aggressive cornering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What hardware do I need to install this hub?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e This hub features standard threading for quick hardware swaps. We recommend using a high-quality bolt kit, such as our 5\/16\" Wheel Hub Bolt Kit, to ensure a secure and reliable connection to your wheels.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I use this hub for both sprint and endurance racing?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Absolutely. Its lightweight, high-grade alloy construction is designed to handle the stresses of both short sprints and longer hauls, providing consistent performance across various race formats.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products From Vendor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/1-rear-wheel-hub-black-vkhr1b\"\u003eRobust 1\" Black Rear Wheel Hub for Solid Kart Rear-End Stability\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/1-1-4-rear-wheel-hub-silver-vkhr125\"\u003eLightweight 1 1\/4\" Silver Rear Wheel Hub for Enhanced Kart Speed\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/1-1-4-rear-wheel-hub-black-vkhr125b\"\u003eDurable 1 1\/4\" Black Rear Wheel Hub for Reliable Kart Traction\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/1-1-4-rear-wheel-hub-extended-black-vkhrrdl\"\u003eExtended 1 1\/4\" Black Rear Wheel Hub with Keyway for Offset Karts\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/wheel-hub-bolt-kit-5-16-3-vkhbk516\"\u003eRobust 5\/16\" Wheel Hub Bolt Kit (3-Pack) for Kart Durability\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VK","offers":[{"title":"Default Title","offer_id":52562658459966,"sku":"VKHR1","price":25.85,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/standardwheelhubsrear-1-rear-wheel-hub-silver-vkhr1.jpg?v=1763113819"},{"product_id":"1-4-stepped-wheel-studs-nuts-12-kws","title":"Reliable 1\/4\" Stepped Wheel Studs and Nuts 12-Pack for Kart Hubs","description":"\u003cul\u003e\n\u003cli\u003ePrecision-engineered 1\/4\" stepped studs for effortless wheel alignment\u003c\/li\u003e\n\u003cli\u003eIncludes compatible nuts for complete, ready-to-install hub solutions\u003c\/li\u003e\n\u003cli\u003e12-pack covers full kart setups or provides ample spares for race weekends\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eSecure your competitive advantage with this versatile kit that addresses common wheel mounting challenges head-on. The stepped profile on each stud guides nuts perfectly, cutting down on cross-threading risks that could sideline you mid-session.\u003c\/p\u003e\u003cp\u003eIn the heat of a race, every second counts—reliable hardware like this ensures your wheels remain firmly attached, allowing aggressive driving without fear of failure. Kart teams appreciate the bulk packaging for easy organization, keeping your toolbox sorted and pit area efficient.\u003c\/p\u003e\u003cp\u003eFrom junior classes to senior divisions, these studs and nuts support diverse chassis types, promoting smoother rotations and reduced drag for potential speed gains. Unlike generic options, this set (SKU: KWS) prioritizes quality to endure repeated torque applications and track abuse.\u003c\/p\u003e\u003cp\u003eStreamline your build process: install quickly, race confidently, and focus on perfecting your line through corners. This pack not only bolsters safety but also indirectly boosts lap times by minimizing mechanical distractions. Whether refreshing an older kart or prepping a new one, it's the smart choice for sustained performance and hassle-free maintenance.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Why should I choose stepped wheel studs over standard ones?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The stepped profile acts as a guide for the nut, significantly reducing the risk of cross-threading during quick wheel changes. This ensures a faster, more reliable mounting process in the high-pressure environment of the pits.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Are these studs compatible with all kart hubs?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e These 1\/4\" studs are designed for standard karting applications. Please verify your hub's thread pitch and hole diameter to ensure a perfect fit for your specific chassis.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How many studs are included in this kit?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e This kit includes 12 studs and 12 compatible nuts, which is enough to outfit a full kart setup with spares left over for your toolbox.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Do I need special tools to install these?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e No special tools are required. They are designed for a straightforward installation, allowing you to refresh your hardware quickly and get back on the track.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How often should I replace my wheel studs?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e It is recommended to inspect your studs regularly for signs of wear, stretching, or thread damage. If you notice any difficulty threading the nuts or signs of fatigue, replace them immediately to maintain safety and performance.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products From Vendor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/1-4-stepped-wheel-stud-only-each-bhws14\"\u003eDurable 1\/4\" Stepped Wheel Stud for Reliable Kart Hub Connections\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/bwk5930-rear-bumper-hardware-kit-30mm-bwk5930\"\u003eDurable 30mm Rear Bumper Hardware Kit for Secure Kart Mounting\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/rear-bumper-keeper-kit-30mm-bkk-30mm\"\u003eHeavy-Duty 30mm Rear Bumper Keeper Kit for CIK Sprint Karts\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/rear-bumper-keeper-kit-28mm-bkk-28mm\"\u003eReliable 28mm Rear Bumper Keeper Kit with Aluminum Clamps\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/bully-clutch-key-bck\"\u003eBully Standard Clutch Key for Secure Hub Locking\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Bully","offers":[{"title":"Default Title","offer_id":52562659705150,"sku":"KWS","price":18.87,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/wheelhub-1-4-stepped-wheel-studs-nuts-12-kws.jpg?v=1763113855"},{"product_id":"1-1-4-rear-wheel-hub-extended-black-vkhrrdl","title":"Extended 1 1\/4\" Black Rear Wheel Hub with Keyway for Offset Karts","description":"\u003cp\u003eEngineered for offset-style karts, this extended 1 1\/4\" rear wheel hub in sleek black delivers the extra reach needed for optimal wheel positioning. With a built-in keyway and dual pinch bolts, it locks onto the axle with unyielding grip, preventing slippage that could cost you positions mid-race. The extended design shifts weight distribution rearward, promoting superior traction on acceleration zones and smoother transitions through turns.\u003c\/p\u003e\u003cp\u003eTypically deployed on the right rear, it addresses common challenges in chassis setups where standard hubs fall short. By maintaining precise alignment, this hub minimizes tire scrub and maximizes contact patch efficiency, directly translating to quicker lap times and more consistent handling. Its robust construction handles the torque from high-revving engines without flexing, keeping your power delivery pure.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eKeyway slot ensures anti-rotation security for high-torque applications.\u003c\/li\u003e\n\u003cli\u003eTwo pinch bolts provide double the clamping force for vibration-free operation.\u003c\/li\u003e\n\u003cli\u003eBlack finish resists corrosion, ideal for wet or dusty track conditions.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eFor racers dialing in their setup for endurance or sprint events, this hub offers versatility without compromising strength. It pairs well with wider rear tires, enhancing grip without adding bulk. Users note improved straight-line stability, allowing bolder braking into corners. Organize your pit tools around this reliable piece—installation is straightforward, and it stays put session after session. SKU: VKHRRDL. Secure your edge in rear-wheel dynamics and dominate the back straight.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Why should I choose an extended hub over a standard 1 1\/4\" hub?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The extended design provides extra reach, which is essential for fine-tuning your kart's track width and weight distribution. It is specifically engineered to help with wheel positioning on offset karts, improving traction in acceleration zones and stability through corners.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is this hub compatible with all 1 1\/4\" kart axles?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, this hub is designed to fit standard 1 1\/4\" racing kart axles. The built-in keyway ensures a secure, non-slip fit, while the dual pinch bolts provide the necessary clamping force for high-torque applications.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I use this hub on the left side of the kart?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e While typically deployed on the right rear to address specific chassis setup challenges and tire scrub, it can be used on either side depending on your specific handling requirements and track setup goals.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How do I ensure the hub doesn't slip during a race?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e This hub features a dedicated keyway slot for anti-rotation security and dual pinch bolts. Ensure both bolts are tightened evenly to the manufacturer's recommended torque specifications to maintain a vibration-free, secure connection to the axle.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does the black finish require special maintenance?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The black finish is designed to resist corrosion, making it highly durable for wet or dusty track conditions. Simply wipe it down after sessions to keep it clean and inspect the pinch bolts periodically to ensure they remain tight.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products From Vendor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/1-1-4-rear-wheel-hub-silver-vkhr125\"\u003eLightweight 1 1\/4\" Silver Rear Wheel Hub for Enhanced Kart Speed\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/1-1-4-rear-wheel-hub-black-vkhr125b\"\u003eDurable 1 1\/4\" Black Rear Wheel Hub for Reliable Kart Traction\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/wheel-hub-bolt-kit-5-16-3-vkhbk516\"\u003eRobust 5\/16\" Wheel Hub Bolt Kit (3-Pack) for Kart Durability\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VK","offers":[{"title":"Default Title","offer_id":52562660950334,"sku":"VKHRRDL","price":25.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/standardwheelhubsrear-1-1-4-rear-wheel-hub-extended-black-vkhrrdl.jpg?v=1763113887"},{"product_id":"1-4-flanged-nut-smooth-each-fns","title":"Premium 1\/4\" Smooth Flanged Nut for Secure Kart Wheel Mounting","description":"\u003cp\u003eEngineered for precision in kart racing, this 1\/4\" smooth flanged nut delivers unmatched reliability on the track. Featuring a 1\/4-28 thread and 7\/16\" hex head, it's the go-to choice for securing wheels without serrations that could damage surfaces.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eProven industry standard used for more than 35 years in competitive karting\u003c\/li\u003e\n\u003cli\u003eEnsures tight, vibration-proof connections to prevent wheel slippage during high-speed turns\u003c\/li\u003e\n\u003cli\u003eCompatible with standard wheel hubs for quick, hassle-free installations\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eWhether you're prepping for a sprint race or endurance event, this nut helps maintain alignment and speed by keeping components firmly in place. Sold individually (SKU: FNS), it's a small part that makes a big difference in your kart's overall stability and lap times.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Why should I choose a smooth flanged nut over a serrated one?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Smooth flanged nuts are designed to secure your wheels without the aggressive \"teeth\" or serrations found on standard hardware. This prevents damage to the surface of your wheel hubs during frequent mounting and dismounting, extending the life of your equipment.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is this nut compatible with all kart wheel hubs?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e This nut features a 1\/4-28 thread, which is the industry standard for most 1\/4\" wheel studs used in competitive karting. It is designed to work with any standard hub utilizing this thread pitch.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How tight should I torque these nuts?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e While these nuts provide a secure, vibration-proof connection, you should always follow the torque specifications provided by your specific wheel or hub manufacturer to avoid stripping the threads or over-stressing the studs.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can these be reused after a race weekend?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, these are durable, industry-standard nuts. However, always inspect the threads for any signs of wear, stretching, or debris before reinstalling them to ensure your wheels remain safely secured during high-speed turns.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products From Vendor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/ultrafree-left-front-stepped-wheel-hub-with-1-4-hardware-pm-39stfl-1-4\"\u003ePerformance Mfg UltraFree Left Front Stepped Hub - 1\/4\" Hardware - Oval Racing\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/ultralight-right-front-stepped-hub-1-4-hardware-only-pm-39st-1-4\"\u003eUltralight Right Front Stepped Hub with 1\/4\" Hardware\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/ultrafree-left-front-wheel-hub-with-1-4-hardware-pm-39f-1-4\"\u003eUltraFree Left Front Hub Equipped with 1\/4 Inch Hardware for Karts\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/ultralite-5-8-front-hub-1-4-hardware-only-bullet-tip-studs-pm-39-1-4\"\u003eUltraLite 5\/8\" Front Hub with 1\/4\" Bullet Tip Studs for Precision Kart Handling\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Performance Mfg","offers":[{"title":"Default Title","offer_id":52562661015870,"sku":"FNS","price":0.26,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/wheelhub-1-4-flanged-nut-smooth-each-fns.jpg?v=1763113890"},{"product_id":"ws1434-1-4-wheel-spacer-black-3-4-ws1434","title":"1\/4\" Black Anodized Spacer for 3\/4\" Kart Spindles","description":"Expand your spacing options with the 1\/4\" Wheel Spacer, black anodized for 3\/4\" spindles and clutch use.\u003cp\u003eIncludes proper chamfer for seamless crankshaft fit.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eOEM in leading clutch designs.\u003c\/li\u003e\n\u003cli\u003ePromotes precise alignment to cut down on play.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003ePerfect for keeping assemblies tight and organized, boosting track readiness. SKU: WS1434\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the primary purpose of this 1\/4\" wheel spacer?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e This spacer is designed to provide precise alignment for 3\/4\" spindles and clutch assemblies. It helps eliminate unwanted play in your setup, ensuring your components remain tight and track-ready.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can this spacer be used on engine crankshafts?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes. The spacer features a specific chamfer designed to provide a seamless fit on standard 3\/4\" crankshafts, making it a common component in many leading clutch designs.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Why is the black anodized finish important?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The black anodized coating provides increased durability and corrosion resistance, ensuring the spacer maintains its integrity and appearance even under the harsh conditions of kart racing.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How do I determine if I need a 1\/4\" spacer or a different size?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e You should measure the gap between your clutch or wheel assembly and the spindle shoulder. If you have excess lateral movement, use this 1\/4\" spacer to take up the slack. If you need a smaller adjustment, consider using a 1\/8\" spacer instead.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products From Vendor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/ws1834-1-8-wheel-spacer-black-3-4-ws1834\"\u003eBlack Anodized 1\/8\" Spacer for 3\/4\" Spindles and Clutches\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Generic","offers":[{"title":"Default Title","offer_id":52562664751422,"sku":"WS1434","price":1.19,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/clutchspacers-ws1434-1-4-wheel-spacer-black-3-4-ws1434.jpg?v=1763113969"},{"product_id":"1-1-4-rear-wheel-hub-black-vkhr125b","title":"Durable 1 1\/4\" Black Rear Wheel Hub for Reliable Kart Traction","description":"\u003cp\u003eWhy settle for less when you can bolt on this straightforward 1 1\/4\" rear wheel hub in black? It's the backbone of many winning setups, offering a no-fuss solution for attaching rear wheels securely. The design focuses on core functionality—tight tolerances ensure the hub mates perfectly with standard axles, reducing play that leads to uneven wear or lost speed.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSolid aluminum body withstands repeated impacts from rough track surfaces.\u003c\/li\u003e\n\u003cli\u003eBlack powder coat finish for a professional look and added protection against scratches.\u003c\/li\u003e\n\u003cli\u003eStandard bore fits 1 1\/4\" axles common in youth and adult karts alike.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eIn the heat of competition, reliability is key, and this hub delivers by keeping wheels true to form. It helps distribute rear-end loads evenly, which means better power transfer to the ground and fewer spin-outs on corner exits. For trackside organization, its simple profile makes it easy to swap during adjustments or repairs, keeping your downtime minimal.\u003c\/p\u003e\u003cp\u003eCompare it to bulkier alternatives: this one trims excess weight without sacrificing durability, allowing your kart to feel nimbler overall. Racers use it to fine-tune stagger setups, achieving that sweet spot between oversteer and understeer. Whether you're a weekend warrior or pro contender, it supports your goals by maintaining alignment lap after lap. Integrate it into your chassis for immediate gains in confidence and control. SKU: VKHR125B. The quiet hero of rear-wheel performance.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Will this hub fit my kart's axle?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e This hub is designed specifically for standard 1 1\/4\" kart axles. Please verify your axle diameter before purchasing to ensure a proper fit.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How do I ensure the hub is installed correctly?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Ensure the axle surface is clean and free of debris. Slide the hub onto the axle, align the keyway, and tighten the clamping bolts evenly to prevent binding and ensure the hub remains true.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I use this hub for both sprint and oval racing?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, this hub is versatile enough for various karting disciplines. Its durable aluminum construction and precise tolerances make it suitable for maintaining alignment and power transfer in both sprint and oval setups.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How often should I inspect my rear wheel hubs?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e We recommend inspecting your hubs before every race day. Check for any signs of stress, ensure the mounting bolts are torqued to specification, and verify there is no excessive play or wobble on the axle.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does this hub come with mounting hardware?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e This product listing is for the hub itself. If you need new hardware, we recommend pairing it with our dedicated wheel hub bolt kits for the best results.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products From Vendor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/1-1-4-rear-wheel-hub-extended-black-vkhrrdl\"\u003eExtended 1 1\/4\" Black Rear Wheel Hub with Keyway for Offset Karts\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/1-1-4-rear-wheel-hub-silver-vkhr125\"\u003eLightweight 1 1\/4\" Silver Rear Wheel Hub for Enhanced Kart Speed\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/wheel-hub-bolt-kit-5-16-3-vkhbk516\"\u003eRobust 5\/16\" Wheel Hub Bolt Kit (3-Pack) for Kart Durability\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VK","offers":[{"title":"Default Title","offer_id":52562667307326,"sku":"VKHR125B","price":21.4,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/standardwheelhubsrear-1-1-4-rear-wheel-hub-black-vkhr125b.jpg?v=1763114021"},{"product_id":"1-1-4-rear-wheel-hub-silver-vkhr125","title":"Lightweight 1 1\/4\" Silver Rear Wheel Hub for Enhanced Kart Speed","description":"\u003cp\u003eShimmering silver sets this 1 1\/4\" rear wheel hub apart, but it's the engineering inside that truly accelerates your game. Machined for exact fitment, it slides onto axles with minimal resistance, allowing quick changes that keep your race prep efficient. The hub's balanced weight helps your kart rotate freely, cutting down on the effort needed for tight maneuvers.\u003c\/p\u003e\u003cp\u003eFocus on the track, not the tools—this hub streamlines your pit routine by requiring fewer adjustments for alignment. Its silver anodized surface not only resists wear but also reflects heat away from critical areas, maintaining consistent performance during hot summer races.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003ePrecision-drilled for standard fasteners, ensuring compatibility across kart brands.\u003c\/li\u003e\n\u003cli\u003eLightweight alloy construction lowers rotating mass for snappier throttle response.\u003c\/li\u003e\n\u003cli\u003eSilver finish enhances visibility during inspections, aiding quick safety checks.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eRacers leverage this hub to optimize rear geometry, often pairing it with adjustable camber kits for personalized handling. The result? Smoother power delivery and reduced tire temperatures, leading to longer stint times before swaps. In club racing or championships, where every second counts, this hub's reliability shines through, preventing mid-race failures that sideline competitors.\u003c\/p\u003e\u003cp\u003eOrganize your spares with ease; its compact size fits neatly in toolboxes. For those building custom karts, it serves as a versatile base for modifications. Embrace the silver standard in rear hubs and feel the difference in your kart's responsiveness. SKU: VKHR125. Speed and style, united.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is this 1 1\/4\" rear wheel hub compatible with all kart brands?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, this hub is precision-drilled for standard fasteners, making it highly compatible with most major kart chassis brands that utilize a 1 1\/4\" axle.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How does the lightweight alloy construction affect my kart's performance?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e By reducing rotating mass, this hub allows for snappier throttle response and helps the kart rotate more freely through tight corners, reducing the physical effort required for steering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Why is the silver anodized finish beneficial for racing?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The silver anodized surface is designed to resist wear and tear while reflecting heat away from the axle and wheel assembly, helping to maintain consistent performance during long, hot race stints.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Do I need special tools to install this rear wheel hub?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e No special tools are required. The hub is machined for an exact fit, allowing it to slide onto the axle with minimal resistance for quick and efficient pit-side changes.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I use this hub to adjust my kart's handling?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Absolutely. Many racers use this hub as a base to optimize rear geometry. It is often paired with adjustable camber kits to fine-tune handling, improve power delivery, and manage tire temperatures.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products From Vendor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/1-1-4-rear-wheel-hub-black-vkhr125b\"\u003eDurable 1 1\/4\" Black Rear Wheel Hub for Reliable Kart Traction\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/1-1-4-rear-wheel-hub-extended-black-vkhrrdl\"\u003eExtended 1 1\/4\" Black Rear Wheel Hub with Keyway for Offset Karts\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/1-rear-wheel-hub-silver-vkhr1\"\u003ePrecision 1\" Silver Rear Wheel Hub for Agile Kart Performance\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/1-rear-wheel-hub-black-vkhr1b\"\u003eRobust 1\" Black Rear Wheel Hub for Solid Kart Rear-End Stability\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/wheel-hub-bolt-kit-5-16-3-vkhbk516\"\u003eRobust 5\/16\" Wheel Hub Bolt Kit (3-Pack) for Kart Durability\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VK","offers":[{"title":"Default Title","offer_id":52562669109566,"sku":"VKHR125","price":21.4,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/standardwheelhubsrear-1-1-4-rear-wheel-hub-silver-vkhr125.jpg?v=1763114053"},{"product_id":"ultralite-1-25-rear-hub-1-4-hardware-only-pm-38-1-4","title":"Performance Mfg UltraLite 1.25\" Rear Wheel Hub - 1\/4\" Hardware - Sprint\/Oval","description":"\u003cp\u003eReducing rotational mass at the axle transforms how your racing go kart accelerates out of tight corners. The Performance Mfg UltraLite 1.25-inch Rear Hub is engineered specifically for 1\/4-inch hardware, delivering a rock-solid, zero-drag mounting solution that maximizes power transfer from the axle to the track surface. Designed from premium billet aluminum and finished with a durable black anodize, this hub provides the ultimate blend of lightweight efficiency and structural reliability under high-load cornering.\u003c\/p\u003e\u003ch2\u003eMaximizing Output from Kart Racing Engines\u003c\/h2\u003e\u003cp\u003eHigh-horsepower kart racing engines demand drivetrain components that won't flex or fail under extreme torque. By utilizing a precision-machined 1.25-inch bore, this UltraLite hub hugs the axle with zero slop, ensuring that every ounce of engine output is translated directly into forward momentum. The strict adherence to 1\/4-28 tapered wheel studs guarantees hardware simplicity while maintaining the sheer clamping force required for competitive sprint and oval racing. When you are pushing the limits of your chassis, reliability is non-negotiable.\u003c\/p\u003e\u003ch2\u003eThe Ultimate Link to Your Top Tire\u003c\/h2\u003e\u003cp\u003eYour setup is only as good as the connection to your top tire. This rear hub standardizes your rear-end fittings, allowing for rapid wheel changes in the hot pits without sacrificing alignment accuracy. Whether you are bolting up fresh rubber for a qualifying run or managing tire wear during a grueling endurance main, the precision-machined register ensures perfect concentricity. If you happen to be browsing for a new go kart frame for sale to build your dream chassis, integrating these Performance Mfg hubs from day one will guarantee a perfectly squared and balanced rear track.\u003c\/p\u003e\u003ch2\u003eUpgrading Kart Wheels Go Kart Dynamics\u003c\/h2\u003e\u003cp\u003eSymmetric rear dynamics dictate how smoothly your chassis releases off the corner. When upgrading kart wheels go kart handling characteristics improve drastically, provided the hubs can handle the lateral stress. The UltraLite design cuts unnecessary unsprung weight, which allows the axle to flex exactly as the manufacturer intended, promoting smoother drifts and lightning-fast directional recoveries.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision 1.25-Inch Bore:\u003c\/strong\u003e Machined for an exact tolerance fit on 1.25\" axles to eliminate vibration and drag.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1\/4-28 Tapered Studs:\u003c\/strong\u003e Utilizes standard 1\/4-inch hardware for lightweight, high-strength wheel retention.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBillet Aluminum Construction:\u003c\/strong\u003e CNC-machined from premium billet for unmatched durability and structural integrity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBlack Anodized Finish:\u003c\/strong\u003e Protects against corrosion, track debris, and harsh racing environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltraLite Profile:\u003c\/strong\u003e Significantly reduces rotational mass, allowing for faster acceleration and responsive braking.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eZero-Drag Performance:\u003c\/strong\u003e Engineered to maintain perfect concentricity, reducing parasitic power loss at the wheels.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUniversal Compatibility:\u003c\/strong\u003e Seamlessly integrates with standard US 2.50 pattern wheels for competitive sprint and oval applications.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is this hub compatible with all kart axles?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e This hub is precision-machined for a 1.25-inch axle. Please ensure your kart chassis utilizes a 1.25\" rear axle before purchasing, as it will not fit standard 40mm or 50mm axles.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does this hub come with the wheel nuts?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e This product includes the 1\/4-28 tapered wheel studs as specified. Please verify that your current wheel nuts are compatible with 1\/4-28 thread pitch hardware.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I use this hub for both sprint and oval racing?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, the UltraLite hub is designed for universal compatibility with standard US 2.50 pattern wheels, making it an excellent choice for both competitive sprint and oval track applications.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How does reducing rotational mass help my kart's performance?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e By reducing unsprung, rotational weight at the axle, the engine can accelerate the wheels more efficiently. This results in quicker acceleration out of corners and more responsive braking performance.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What maintenance is required for these billet aluminum hubs?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Periodically inspect the studs for wear and ensure the hub remains clean of track debris. The black anodized finish provides excellent corrosion resistance, but we recommend checking the set screws or clamping hardware regularly to ensure they remain tight under high-load cornering.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products From Vendor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/40mm-pmi-rear-wheel-hub-w-dual-patterns-double-lock-style-pm-38dl-40\"\u003e40mm PMI Double Lock Rear Wheel Hub with Dual Patterns for Secure Racing\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/ultrafree-left-front-stepped-wheel-hub-with-1-4-hardware-pm-39stfl-1-4\"\u003ePerformance Mfg UltraFree Left Front Stepped Hub - 1\/4\" Hardware - Oval Racing\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/ultrafree-right-front-stepped-wheel-hub-with-1-4-hardware-pm-39stf-1-4\"\u003ePerformance Mfg UltraFree Right Front Stepped Hub - 1\/4\" Hardware - Racing Spec\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/ultralight-right-front-stepped-hub-1-4-hardware-only-pm-39st-1-4\"\u003eUltralight Right Front Stepped Hub with 1\/4\" Hardware\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/ultrafree-left-front-wheel-hub-with-1-4-hardware-pm-39f-1-4\"\u003eUltraFree Left Front Hub Equipped with 1\/4 Inch Hardware for Karts\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Performance Mfg","offers":[{"title":"Default Title","offer_id":52562688999742,"sku":"PM-38-1\/4","price":27.84,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/wheelshubsbyperformancemfg-ultralite-1-25-rear-hub-1-4-hardware-only-pm-38-1-4.jpg?v=1763114385"},{"product_id":"ultrafree-left-front-stepped-wheel-hub-with-1-4-hardware-pm-39stfl-1-4","title":"Performance Mfg UltraFree Left Front Stepped Hub - 1\/4\" Hardware - Oval Racing","description":"\u003cp\u003ePrecision cornering in competitive racing demands front-end geometry that eliminates scrub and maximizes turn-in response. The Performance Mfg UltraFree Left Front Stepped Hub is engineered specifically for stepped spindles, allowing tuners to dial in exact wheel positioning and customizable camber settings. When you are pushing the limits on dirt ovals or paved circuits, reducing rotational inertia at the front left wheel translates directly to effortless steering and preserved momentum through technical sections.\u003c\/p\u003e\u003ch2\u003eOptimizing Chassis Dynamics Beyond Mounts Engine and Belt Engine Components\u003c\/h2\u003e\u003cp\u003eWhile many builders focus heavily on power delivery—obsessing over the perfect belt engine setup or rigid mounts engine configurations—true lap time reductions often hide in the unsprung weight and rolling resistance of your chassis. This lightweight aluminum stepped hub cuts down on that critical rotational mass. By accommodating varying offsets, it ensures your kart's front left wheel performs optimally under heavy lateral loads. It is not just about straight-line speed; it is about maintaining a featherlight touch on the wheel while carving corners.\u003c\/p\u003e\u003ch2\u003eSeamless Integration with Master Cylinder Brake Parts and Premium Rubber\u003c\/h2\u003e\u003cp\u003eA well-balanced kart requires absolute harmony between your steering, braking, and grip. The UltraFree stepped hub integrates flawlessly into your front-end assembly, working in tandem with your master cylinder brake parts to ensure stable, predictable deceleration before turn-in. Furthermore, when paired with the best go kart tires for racing, this hub's precise offset capabilities allow the tire profile to maintain an optimal contact patch, significantly reducing tire wear and heat degradation over a long feature race.\u003c\/p\u003e\u003ch2\u003eUltraFree Left Front Stepped Hub Specifications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eStepped Spindle Compatibility:\u003c\/strong\u003e Precision-machined specifically for stepped spindles to allow micro-adjustments in wheel offset.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLightweight Aluminum Construction:\u003c\/strong\u003e Drastically reduces rotational inertia for sharper, more responsive steering inputs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1\/4-Inch Hardware Included:\u003c\/strong\u003e Comes complete with high-grade 1\/4\" studs and nuts for immediate, secure installation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLeft-Side Specific Geometry:\u003c\/strong\u003e Optimized for the unique load transfers experienced on the left front during oval track cornering.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCustomizable Camber Tuning:\u003c\/strong\u003e Enables advanced chassis tuners to dial in exact camber settings to minimize tire scrub.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProfessional-Grade Durability:\u003c\/strong\u003e Machined by Performance Mfg to withstand the brutal lateral forces of competitive karting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFriction-Reducing Design:\u003c\/strong\u003e The UltraFree bearing spacing promotes free-spinning performance to maximize straightaway speed.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Why should I choose a stepped hub over a standard wheel hub?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The stepped design is specifically engineered for stepped spindles, allowing for precise micro-adjustments in wheel offset and camber. This is critical for oval racing where fine-tuning your front-end geometry can significantly improve turn-in response and reduce tire scrub.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does this hub come ready to install?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, this hub includes high-grade 1\/4\" studs and nuts, ensuring you have the necessary hardware for a secure and immediate installation onto your kart's front end.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How does reducing rotational inertia at the front wheel help my lap times?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e By using lightweight aluminum construction, this hub reduces unsprung weight. Less rotational mass means the steering feels more responsive and the kart maintains momentum more effectively through technical corners and transitions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is this hub compatible with all kart spindles?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e This hub is precision-machined specifically for stepped spindles. Please verify your spindle type before purchase to ensure proper fitment and alignment.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can this hub help with tire wear?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Absolutely. By allowing for customizable camber settings, you can optimize the tire's contact patch with the track surface. A better contact patch prevents uneven heat buildup and excessive tire degradation during long feature races.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products From Vendor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/ultrafree-right-front-stepped-wheel-hub-with-1-4-hardware-pm-39stf-1-4\"\u003ePerformance Mfg UltraFree Right Front Stepped Hub - 1\/4\" Hardware - Racing Spec\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/ultrafree-left-front-wheel-hub-with-1-4-hardware-pm-39f-1-4\"\u003eUltraFree Left Front Hub Equipped with 1\/4 Inch Hardware for Karts\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/metric-pattern-front-hub-with-17mm-bearings-5-16-hardware-only-pm-39f-17m\"\u003eMetric Pattern Front Hub Featuring 17mm Bearings and 5\/16 Hardware\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/17mm-front-hub-usa-pattern-5-16-hardware-only-included-pm-39f-17us\"\u003e17mm USA Pattern Front Hub with Included 5\/16\" Hardware\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/ultralite-5-8-front-hub-1-4-hardware-only-bullet-tip-studs-pm-39-1-4\"\u003eUltraLite 5\/8\" Front Hub with 1\/4\" Bullet Tip Studs for Precision Kart Handling\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Performance Mfg","offers":[{"title":"Default Title","offer_id":52562702401854,"sku":"PM-39STFL-1\/4","price":46.29,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/wheelshubsbyperformancemfg-ultrafree-left-front-stepped-wheel-hub-with-1-4-hardware-pm-39stfl-1-4.jpg?v=1763114520"},{"product_id":"ultrafree-right-front-stepped-wheel-hub-with-1-4-hardware-pm-39stf-1-4","title":"Performance Mfg UltraFree Right Front Stepped Hub - 1\/4\" Hardware - Racing Spec","description":"\u003cp\u003ePrecision engineering separates podium finishers from the pack, and integrating premium kart parts like the Performance Mfg UltraFree Right Front Stepped Hub is critical for dialing in your chassis geometry. The right front corner takes the brunt of the load during aggressive cornering, making it the most vital component for maintaining momentum. By utilizing an innovative stepped design, this hub allows racers to execute rapid, precise track-width adjustments. Fine-tuning your front-end offset directly impacts jacking effect and caster utilization, ensuring your inside rear wheel lifts at the exact right moment for frictionless rotation through the apex.\u003c\/p\u003e\u003ch2\u003eOptimizing Your Setup with Premium Wheels Parts\u003c\/h2\u003e\u003cp\u003eWhen you are pushing the limits of grip, every millimeter of track width matters. This UltraFree stepped hub provides the ultimate adjustability for your kart wheels, allowing you to adapt to changing track conditions instantly. Whether you are running high-bite clay or a rubbered-in sprint track, the ability to shift your wheel position without swapping axles or spacers is a massive advantage. Paired with high-quality go kart wheels tires, this hub translates steering input into immediate, predictable chassis response. The reduced rotational mass means less inertia, translating directly into faster acceleration out of the corner.\u003c\/p\u003e\u003ch2\u003eTechnical Specs \u0026amp; Track Advantages\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdaptive Stepped Geometry:\u003c\/strong\u003e Execute micro-adjustments to wheel offsets to perfectly match track conditions and maximize tire contact patches.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltra-Low Friction Design:\u003c\/strong\u003e The UltraFree bearing configuration minimizes rolling resistance for maximum straight-line acceleration and momentum retention.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1\/4-Inch Hardware Included:\u003c\/strong\u003e Ensures a robust, slip-free fitment under extreme high-G cornering loads, preventing wheel shift.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLightweight Aluminum Construction:\u003c\/strong\u003e Significantly reduces rotational inertia and unsprung weight for sharper, more responsive turn-in.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptimized Tire Wear:\u003c\/strong\u003e Promotes even load distribution, extending the life of the best go kart tires for racing and keeping your tire budget in check.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModular Quick-Release Capability:\u003c\/strong\u003e Streamlines pit-lane maintenance and allows for rapid setup changes during high-pressure race days.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision CNC Machined:\u003c\/strong\u003e Manufactured by Performance Mfg to exact tolerances, guaranteeing zero runout and vibration-free operation.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eData acquisition systems consistently show that eliminating front-end bind is the key to lower lap times. The Performance Mfg UltraFree hub excels at providing the driver with enhanced feedback, building the confidence needed to hold aggressive lines. Integrate this component into your right-front setup to turn potential handling weaknesses into race-winning strengths.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Why should I choose a stepped hub over a standard wheel hub?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The stepped design allows for rapid, precise track-width adjustments. By fine-tuning your front-end offset, you can optimize your kart's jacking effect and caster utilization, which is essential for achieving the correct inside rear wheel lift for better cornering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does this hub come with the necessary hardware?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, this Performance Mfg UltraFree hub includes 1\/4\" hardware, ensuring a robust and slip-free fitment that holds up under high-G cornering loads.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How does this hub affect my kart's handling?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e By reducing rotational mass and inertia, this hub allows for sharper turn-in and faster acceleration out of corners. It also helps eliminate front-end bind, providing better driver feedback and more predictable chassis response.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is this hub compatible with all kart setups?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e This hub is designed for precision racing applications. It is ideal for racers looking to make quick adjustments without swapping axles or spacers, making it a versatile tool for both high-bite clay and rubbered-in sprint tracks.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What maintenance is required for the UltraFree hub?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Because it is CNC machined to exact tolerances, it requires minimal maintenance. However, you should periodically inspect the bearing configuration to ensure it remains free of debris to maintain the low-friction performance that maximizes your momentum.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products From Vendor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/ultrafree-left-front-stepped-wheel-hub-with-1-4-hardware-pm-39stfl-1-4\"\u003ePerformance Mfg UltraFree Left Front Stepped Hub - 1\/4\" Hardware - Oval Racing\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/ultralight-right-front-stepped-hub-1-4-hardware-only-pm-39st-1-4\"\u003eUltralight Right Front Stepped Hub with 1\/4\" Hardware\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/ultrafree-left-front-wheel-hub-with-1-4-hardware-pm-39f-1-4\"\u003eUltraFree Left Front Hub Equipped with 1\/4 Inch Hardware for Karts\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/40mm-pmi-rear-wheel-hub-w-dual-patterns-double-lock-style-pm-38dl-40\"\u003e40mm PMI Double Lock Rear Wheel Hub with Dual Patterns for Secure Racing\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/ultralight-right-rear-double-lock-hub-1-4-hardware-only-pm-38dl-1-4\"\u003eUltralight Right Rear Double Lock Hub Designed for 1\/4 Inch Hardware\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Performance Mfg","offers":[{"title":"Default Title","offer_id":52562702565694,"sku":"PM-39STF-1\/4","price":41.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/wheelshubsbyperformancemfg-ultrafree-right-front-stepped-wheel-hub-with-1-4-hardware-pm-39stf-1-4.jpg?v=1763114523"},{"product_id":"ultralite-1-25-rear-hub-5-16-hardware-only-pm-38-5-16","title":"UltraLite 1.25 Inch Rear Hub with 5\/16 Inch Hardware and Pinch Bolt","description":"Discover streamlined rear performance in the UltraLite 1.25-inch rear hub, configured for 5\/16-24 hardware with an included 5\/16-18 pinch bolt. Black anodized for a tough, corrosion-resistant exterior, it features a 1.25-inch bore for precise axle engagement.\u003cp\u003eThis single-pattern setup locks everything in place, preventing shifts that could cost you time. The lightweight build enhances your kart's agility, making it easier to hit apexes and extend leads.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAnodized Protection:\u003c\/strong\u003e Black finish wards off wear from track debris and weather.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eIncluded Components:\u003c\/b\u003e Hardware and pinch bolt for immediate, secure installation.\u003c\/li\u003e\n\u003cli\u003eBalanced Rotation: Promotes even tire wear and consistent handling.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eFor better organization, its all-in-one kit reduces parts hunting during builds. Racers benefit from the hub's ability to maintain alignment, leading to predictable behavior in variable conditions.\u003c\/p\u003e\u003cp\u003ePerformance Mfg's engineering ensures it withstands high torques, ideal for tuned engines. SKU: PM-38-5\/16 – your rear hub solution for speed and simplicity.\u003c\/p\u003e\u003cp\u003eIt's the detail that separates contenders from champions.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is this hub compatible with all kart axles?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e This hub is specifically designed for a 1.25-inch diameter axle. Please verify your axle size before purchasing to ensure a proper, secure fit.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does this hub come with the necessary hardware for installation?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, this kit includes the 5\/16-24 hardware and the 5\/16-18 pinch bolt, allowing for an immediate and secure installation onto your axle.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Why is the black anodized finish important for a rear hub?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The black anodized coating provides a durable, corrosion-resistant barrier that protects the aluminum from track debris, moisture, and environmental wear, ensuring the hub maintains its integrity over time.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How does the single-pattern design benefit my racing performance?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The single-pattern setup is engineered to lock the hub firmly in place, preventing unwanted shifting or movement on the axle. This stability helps maintain consistent alignment and handling, which is critical for hitting apexes and maintaining speed.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can this hub handle high-torque engine setups?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Absolutely. Performance Mfg has engineered this hub to withstand high torque loads, making it an excellent choice for tuned engines and competitive racing environments.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products From Vendor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/40mm-pmi-rear-wheel-hub-w-dual-patterns-double-lock-style-pm-38dl-40\"\u003e40mm PMI Double Lock Rear Wheel Hub with Dual Patterns for Secure Racing\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/ultralight-right-rear-double-lock-hub-5-16-hardware-only-pm-38dl-5-16\"\u003eUltralight Right Rear Double Lock Hub for 5\/16 Inch Hardware Strength\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/metric-pattern-front-hub-with-17mm-bearings-5-16-hardware-only-pm-39f-17m\"\u003eMetric Pattern Front Hub Featuring 17mm Bearings and 5\/16 Hardware\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/17mm-front-hub-usa-pattern-5-16-hardware-only-included-pm-39f-17us\"\u003e17mm USA Pattern Front Hub with Included 5\/16\" Hardware\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/ultralite-5-8-front-hub-5-16-hardware-only-pm-39-5-16\"\u003eUltraLite 5\/8\" Front Hub with 5\/16\" Hardware and Rubber Sealed Bearings\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Performance Mfg","offers":[{"title":"Default Title","offer_id":52562708365630,"sku":"PM-38-5\/16","price":29.83,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/wheelshubsbyperformancemfg-ultralite-1-25-rear-hub-5-16-hardware-only-pm-38-5-16.jpg?v=1763114642"},{"product_id":"pmi-aluminum-spindle-nut-set-usa-5-8-18-thread-pm-083","title":"Lightweight PMI Aluminum Spindle Nut Set with 5\/8-18 USA Thread","description":"\u003cp\u003eShave grams off your kart's rotating mass using this PMI aluminum spindle nut set, precision-machined with 5\/8-18 threads made in the USA.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eAluminum construction cuts weight without sacrificing strength\u003c\/li\u003e\n\u003cli\u003eSet includes all necessary components for one spindle\u003c\/li\u003e\n\u003cli\u003eCorrosion-resistant for consistent performance in wet or dry conditions\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eThe lighter design enhances handling by allowing quicker suspension reactions, translating to tighter lines and higher corner speeds. Ideal for weight-conscious classes, this set (SKU: PM-083) streamlines assembly, helping you stay organized and race-ready. Pair it with washers for a complete, low-friction setup that minimizes drag and maximizes efficiency on the track.\u003c\/p\u003e\u003cp\u003eRacers report noticeable improvements in agility, making it a smart upgrade for competitive edges.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Why should I choose aluminum spindle nuts over steel?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Aluminum spindle nuts are significantly lighter than standard steel hardware. By reducing rotating mass at the spindle, you decrease unsprung weight, which allows your kart's suspension to react more quickly to track irregularities, leading to better handling and improved corner speeds.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Are these nuts compatible with all kart spindles?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e This set is specifically machined with a 5\/8-18 thread. Please verify that your spindle shaft matches this thread pitch and diameter before installation to ensure a proper fit.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Do I need to use a thread locker with these aluminum nuts?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e While the precision machining provides a secure fit, many racers prefer to use a light-duty thread locker or ensure the nut is properly torqued to manufacturer specifications to prevent loosening due to track vibration.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can these be used in wet racing conditions?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, these PMI spindle nuts are corrosion-resistant, making them an excellent choice for both dry and wet track conditions where moisture might otherwise cause standard steel hardware to rust or seize.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products From Vendor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/pmi-pursuit-14-extra-cross-stepped-spindle-rh-pm-124340\"\u003ePMI Pursuit 14° Extra Cross Stepped Right-Hand Spindle for Extreme Grip\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/pmi-pursuit-10-high-cross-spindle-rh-pm-124350\"\u003ePMI Pursuit Right-Hand 10° High Cross Spindle for Balanced Performance\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/pmi-elevate-17-cross-stepped-spindle-rh-pm-124430\"\u003ePMI Elevate 17° Cross Stepped Right-Hand Spindle for Ultimate Stability\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/pmi-rh-spindle-straight-shaft-10-degree-pm-124120\"\u003ePMI Right Hand Straight Shaft Spindle with 10 Degree KPI\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/pmi-lh-spindle-straight-10-degree-pm-124040\"\u003ePMI Slack LH Straight 10° Spindle - 5\/8\" Shaft - LTO Oval Racing\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PMI","offers":[{"title":"Default Title","offer_id":52562711970110,"sku":"PM-083","price":17.88,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/wheelhub-pmi-aluminum-spindle-nut-set-usa-5-8-18-thread-pm-083.jpg?v=1763114668"},{"product_id":"ws12-1-2-wheel-spacer-silver-5-8-ws12","title":"Silver 1\/2 Inch Wheel Spacer Compatible with 5\/8 Inch Axles","description":"\u003cstrong\u003eExpand your setup options\u003c\/strong\u003e with the 1\/2-inch silver wheel spacer, built for 5\/8-inch axles and boasting a 0.975-inch OD for enhanced grip over standard black spacers. This addition allows for wider track widths, improving high-speed stability.\u003cul\u003e\n\u003cli\u003eGenerous Offset: 1\/2-inch spacing ideal for aggressive alignments.\u003c\/li\u003e\n\u003cli\u003eLarger Diameter: Silver version offers better centering and durability.\u003c\/li\u003e\n\u003cli\u003eQuick Install: Bolts on easily for on-the-fly adjustments.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eUse it to counter oversteer, unlocking smoother, quicker laps. Its design aids in keeping spacers sorted in your toolbox. SKU: WS12 – precision spacing for performance gains.\u003c\/p\u003e\u003cp\u003eEssential for versatile kart tuning.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the primary purpose of using a 1\/2-inch wheel spacer on my kart?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The 1\/2-inch spacer is used to increase your kart's track width. By widening the stance, you can improve high-speed stability and fine-tune your handling to help counter oversteer, leading to more consistent lap times.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is this spacer compatible with all kart axles?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e This specific spacer is precision-engineered for 5\/8-inch axles. Please verify your axle diameter before purchasing to ensure a proper fit.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How does the silver version differ from standard black spacers?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The silver version features a 0.975-inch outer diameter (OD), which provides better centering on the axle and increased durability compared to standard black spacers.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I use this spacer for on-the-fly track adjustments?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, the design allows for quick installation and removal, making it an essential tool for racers who need to adjust their setup quickly between practice sessions or heats.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products From Vendor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/ws14-1-4-wheel-spacer-silver-5-8-ws14\"\u003eSilver 1\/4 Inch Wheel Spacer for 5\/8 Inch Axles\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/wheel-weight-kit-ww\"\u003eSelf-Adhesive Wheel Weight Kit for Kart Tire Balancing\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/sr1-axle-snap-ring-1-sr1\"\u003e1-Inch Axle Snap Ring for Secure Kart Wheel Retention\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Swift Karting","offers":[{"title":"Default Title","offer_id":52562714100030,"sku":"WS12","price":1.38,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/wheelspacersfront-ws12-1-2-wheel-spacer-silver-5-8-ws12.jpg?v=1763114707"},{"product_id":"ws-516-wheel-stud-5-16-24-sold-each-ws-516","title":"5\/16-24 Threaded Wheel Stud for Kart Hubs (Sold Each)","description":"\u003cul\u003e\n\u003cli\u003eConsistent 5\/16-24 threads on both ends for universal hub and nut compatibility\u003c\/li\u003e\n\u003cli\u003eDurable steel build resists bending under racing stresses\u003c\/li\u003e\n\u003cli\u003eIndividual packaging (SKU: WS-516) allows buying exactly what you need\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eThread this stud into your hub for a foundation that supports flawless wheel seating, reducing vibrations that rob you of precious seconds. It's particularly useful in high-turn tracks where alignment is key to consistent pacing.\u003c\/p\u003e\u003cp\u003eRacers benefit from its straightforward design, which speeds up disassembly for tire changes or inspections, keeping pit stops efficient. Whether repairing or upgrading, this stud helps organize your parts bin while delivering the strength for confident, full-throttle runs.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Are these wheel studs sold as a set or individually?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e These wheel studs are sold individually. This allows you to purchase the exact quantity needed for a single hub repair or a full kart upgrade without buying excess hardware.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the thread size for this stud?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e This stud features a consistent 5\/16-24 thread pitch on both ends, ensuring universal compatibility with standard racing kart hubs and lug nuts.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Why is it important to use high-quality steel studs?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Racing karts experience significant lateral forces, especially in high-turn tracks. Our durable steel studs resist bending under these stresses, ensuring your wheels remain perfectly seated and reducing vibrations that can affect your lap times.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How does this stud help with pit stop efficiency?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The straightforward design of these studs allows for quick and easy wheel removal. This speeds up tire changes and routine inspections, helping you get back on the track faster.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products From Vendor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/metric-pattern-front-hub-with-17mm-bearings-5-16-hardware-only-pm-39f-17m\"\u003eMetric Pattern Front Hub Featuring 17mm Bearings and 5\/16 Hardware\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/17mm-front-hub-usa-pattern-5-16-hardware-only-included-pm-39f-17us\"\u003e17mm USA Pattern Front Hub with Included 5\/16\" Hardware\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/metric-pattern-front-hub-with-5-8-bearings-5-16-hardware-only-pm-39f-58m\"\u003ePerformance Mfg Metric Front Hub - 5\/8\" Bearings \u0026amp; 5\/16\" Hardware - All Classes\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/ultralight-right-front-stepped-hub-5-16-hardware-only-pm-39st-5-16\"\u003eUltralight Right Front Stepped Hub with 5\/16\" Hardware and Bearings\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/ultralite-5-8-front-hub-5-16-hardware-only-pm-39-5-16\"\u003eUltraLite 5\/8\" Front Hub with 5\/16\" Hardware and Rubber Sealed Bearings\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Performance Mfg","offers":[{"title":"Default Title","offer_id":52562723635518,"sku":"WS-516","price":4.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/wheelhub-ws-516-wheel-stud-5-16-24-sold-each-ws-516.jpg?v=1763114791"},{"product_id":"ws8mm-8mm-wheel-spacer-17mm-ws8mm","title":"8mm Metric Wheel Spacer 17mm ID for Superior Kart Wheel Positioning","description":"\u003cul\u003e\n\u003cli\u003eActual 10mm width offers more adjustment range than standard 8mm.\u003c\/li\u003e\n\u003cli\u003e17mm ID matches common European kart axles for hassle-free use.\u003c\/li\u003e\n\u003cli\u003eImproves acceleration by stabilizing wheels during power delivery.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eTrack conditions vary, but your setup shouldn't— this spacer locks in the perfect offset to maintain speed through straights and curves alike. Add SKU: WS8MM to your arsenal for organized, high-performing builds that shine under pressure.\u003c\/p\u003e","brand":"International Kart Parts","offers":[{"title":"Default Title","offer_id":52565226553662,"sku":"WS8MM","price":1.53,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/wheelspacersfront-ws8mm-8mm-wheel-spacer-17mm-ws8mm.jpg?v=1763116177"},{"product_id":"ws4mm-4mm-wheel-spacer-17mm-ws4mm","title":"Righetti Ridolfi Metric Front Wheel Spacer - 17mm ID x 4mm - All Classes","description":"\u003cp\u003eWhen tuning high-performance \u003cstrong\u003ego karts and parts\u003c\/strong\u003e for optimal front-end geometry, the Righetti Ridolfi 4mm Metric Wheel Spacer (17mm ID) delivers the exact track width adjustment needed for razor-sharp turn-in and unyielding reliability. Engineered to withstand the extreme lateral loads of competitive racing, this spacer (measuring an actual 5mm in width) provides a rock-solid mating surface between your wheel hub and spindle. It eliminates the vague handling and wheel deflection that plague inferior setups, allowing you to attack high-speed apexes with absolute confidence.\u003c\/p\u003e\u003ch2\u003ePrecision Tuning Beyond the Engine Carburettor\u003c\/h2\u003e\u003cp\u003eA winning chassis setup demands the same meticulous attention to detail as tuning your \u003cem\u003eengine carburettor\u003c\/em\u003e or installing comprehensive \u003cem\u003eengine rebuilding kits\u003c\/em\u003e. Every millimeter of track width directly impacts your kart's scrub radius, jacking effect, and overall grip levels. By utilizing this 17mm ID metric spacer, racers can execute micro-adjustments to the front track, shifting the weight transfer characteristics to cure mid-corner understeer or stabilize corner-entry oversteer. Constructed from high-density, crush-resistant materials, it guarantees that your wheel fitment remains perfectly square, lap after grueling lap.\u003c\/p\u003e\u003ch2\u003eDurability That Matches Your Brake Calliper Parts\u003c\/h2\u003e\u003cp\u003eJust as you rely on premium \u003cem\u003ebrake calliper parts\u003c\/em\u003e to haul your chassis down from top speed, your wheel spacers must endure immense compressive forces without deforming. This 4mm\/5mm metric spacer is machined to exacting tolerances, ensuring a seamless slide over 17mm international stub axles. Whether you are fine-tuning a high-horsepower shifter kart or maximizing the momentum of a spec class setup running a fresh \u003cem\u003elo206 carburetor kit\u003c\/em\u003e, this spacer maintains structural integrity under heavy braking and aggressive curb strikes. It simplifies pit lane adjustments, allowing mechanics to rapidly swap widths during frantic practice sessions.\u003c\/p\u003e\u003ch2\u003eCore Technical Specifications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eExact 17mm Inner Diameter:\u003c\/strong\u003e Slides flawlessly over standard international kart stub axles without binding or excessive play.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptimized Track Width Control:\u003c\/strong\u003e Listed as a 4mm spacer with an actual 5mm width, ideal for granular front-end geometry adjustments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCrush-Resistant Construction:\u003c\/strong\u003e Engineered to withstand extreme compressive loads from wheel nuts without deforming or cracking.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnhanced Contact Patch:\u003c\/strong\u003e Facilitates precise scrub radius tuning to maximize tire grip and reduce rolling resistance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUniversal Class Compatibility:\u003c\/strong\u003e Fully legal and highly effective across all sprint, enduro, and oval karting divisions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRapid Pit Lane Swaps:\u003c\/strong\u003e Smooth internal bore allows for lightning-fast track width changes during critical tuning windows.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVibration Dampening:\u003c\/strong\u003e High-quality material composition helps isolate the hub from minor spindle vibrations.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Why is this listed as a 4mm spacer if it measures 5mm?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e While commonly referred to as a 4mm spacer in karting terminology, the actual physical width is 5mm. This is a standard industry naming convention, but please account for the 5mm measurement when calculating your total front-end track width.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is this spacer compatible with all kart stub axles?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, this spacer features a 17mm inner diameter, which is the standard size for international karting stub axles. It is designed to slide on easily without binding.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How do I use these spacers to tune my kart's handling?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e You can use these spacers to adjust your front track width. Increasing the track width generally increases front-end grip and can help reduce mid-corner understeer, while decreasing the width can help stabilize the kart if it feels too aggressive or \"darty\" on corner entry.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Do I need to replace these spacers frequently?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e These are constructed from high-density, crush-resistant material designed to withstand extreme lateral loads. However, you should inspect them periodically for signs of cracking or deformation, especially after heavy curb strikes or if you notice your wheel fitment is no longer square.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I stack multiple spacers on one side?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, you can stack spacers to achieve your desired track width. Ensure that you have enough thread engagement on your stub axle to safely secure the wheel nut after adding additional spacers.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products From Vendor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/k711n-ridolfi-righetti-40mm-rear-hub-115mm-length-black-k711n\"\u003eRighetti Ridolfi K711N 40mm Rear Wheel Hub - 115mm Length Black - Shifter \u0026amp; 206 Karts\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/30mm-sprocket-hub-black-sc30-bk\"\u003eRighetti Ridolfi SC30-BK 30mm Sprocket Hub - Black Anodized - CIK\/FIA Legal\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/40mm-soft-axle-40mmaxs\"\u003eRighetti Ridolfi KD120-S6 40mm Soft Rear Axle - 3mm Wall - Margay Ignite\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Righetti Ridolfi","offers":[{"title":"Default Title","offer_id":52565242282302,"sku":"WS4MM","price":1.46,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/wheelspacersfront-ws4mm-4mm-wheel-spacer-17mm-ws4mm.jpg?v=1763116181"},{"product_id":"6mm-x-40mm-socket-head-cap-screw-with-drilled-shank-6x40shcs-ds","title":"6mm x 40mm Drilled Shank Socket Head Cap Screw for Steering","description":"\u003cp\u003eNeed a reliable fastener for your kart's core steering? This 6mm x 40mm socket head cap screw with drilled shank delivers, complete with a spring clip for foolproof installation.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003ePerfect for Euro steering hub cross bolts.\u003c\/li\u003e\n\u003cli\u003eDrilled shank accepts clips to lock in place.\u003c\/li\u003e\n\u003cli\u003e40mm length suits deeper hub penetrations.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eBy securing vital connections, it minimizes flex that dulls your inputs, sharpening response for better corner speeds. Pit crews appreciate its versatility beyond steering—use it anywhere a pinned 6mm screw fits. Keeps your toolbox sorted with this multi-purpose essential. In races, it means no mid-lap worries about loosening hardware. SKU: 6X40SHCS-DS.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Why is the drilled shank important for steering components?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The drilled shank allows you to pass a safety clip or cotter pin through the screw after installation. This provides a mechanical lock that prevents the bolt from vibrating loose during high-speed racing, ensuring your steering remains secure.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is this screw compatible with all kart steering hubs?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e This 6mm x 40mm screw is specifically designed for Euro-style steering hubs that utilize cross-bolt configurations. The 40mm length is ideal for deeper hub penetrations, but always verify your specific hub's thread pitch and depth requirements before installation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I use this hardware for applications other than steering?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Absolutely. While it is a staple for steering hubs, its high-strength design and locking capability make it an excellent choice for any critical connection on your kart where a 6mm pinned fastener is required to prevent loosening.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Do I need any special tools to install this?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e You will need a standard metric hex key (Allen wrench) to tighten the socket head cap screw. Once tightened to the correct torque, simply insert your spring clip or cotter pin through the drilled hole in the shank to lock it in place.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products From Vendor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/dzus-fastener-kit-dp-466\"\u003eComplete Dzus Fastener Kit with 8 Each of Buttons, Springs, and Rivets\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/euro-snap-clamp-set-jk2999\"\u003eAffordable Euro Snap Clamp Set Pair - CIK Alternative to KG Brand - Bumper Clamps BodyWork Front\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/8mmtr275b-black-8mm-hex-tie-rod-only-8mmtr275b\"\u003eHigh-Performance Black 8mm Hex Tie Rod Tube 275mm\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/8mmtr270b-black-8mm-hex-tie-rod-only-8mmtr270b\"\u003eRobust Black 8mm Hex Tie Rod - 270mm for Enhanced Steering\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Swift Karting Supplies","offers":[{"title":"Default Title","offer_id":52565258010942,"sku":"6X40SHCS-DS","price":1.63,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/steeringhardware-6mm-x-40mm-socket-head-cap-screw-with-drilled-shank-6x40shcs-ds.jpg?v=1763116187"},{"product_id":"cfws12-carbon-fiber-wheel-spacer-1-2-wide-x-5-8-id-cfws12","title":"Advanced Carbon Fiber 1\/2\" Wheel Spacer 5\/8\" ID for Elite Kart Builds","description":"\u003cp\u003eEngineered excellence defines this 1\/2\" carbon fiber spacer with 5\/8\" ID, revolutionizing how karts handle extreme track demands.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eThick profile yet incredibly light, ideal for heavy-duty applications.\u003c\/li\u003e\n\u003cli\u003eSuperior vibration dampening for smoother rides at full throttle.\u003c\/li\u003e\n\u003cli\u003eFacilitates precise geometry tweaks for personalized racing styles.\u003c\/li\u003e\n\u003cli\u003eStreamlines component storage, keeping your pit area efficient and clutter-free.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eCarbon fiber's magic lies in its ability to fortify without burdening—here, it secures wheels firmly while trimming ounces that matter in close races. Whether battling on ovals or navigating technical layouts, SKU: CFWS12 empowers bolder maneuvers and faster recoveries. Racers report noticeable improvements in lap consistency, attributing it to the spacer's role in maintaining optimal balance under varying loads. Pair with other high-end parts for a symphony of speed, where every element works in harmony to outmaneuver opponents and secure victories.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Why should I choose carbon fiber over aluminum wheel spacers?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Carbon fiber offers a superior strength-to-weight ratio compared to traditional aluminum. It provides excellent vibration dampening, which helps maintain tire contact and stability during high-speed cornering, all while reducing unsprung weight.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How do I determine if the 1\/2\" spacer is the right size for my kart?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The 1\/2\" width is ideal for fine-tuning your kart's track width. If you are looking to increase your front or rear track width to improve stability or adjust your scrub radius, this spacer provides the necessary clearance. Always ensure your spindle or axle has enough thread engagement after installation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is this spacer compatible with standard 5\/8\" kart spindles?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, this spacer is specifically engineered with a 5\/8\" inner diameter (ID), making it a direct fit for standard 5\/8\" kart spindles and axle components.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I stack these spacers to achieve a wider track?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e While you can stack spacers, we recommend using the single-width spacer that best fits your geometry needs to ensure maximum structural integrity and prevent potential movement under heavy load.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Do I need special tools to install these carbon fiber spacers?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e No special tools are required. Simply remove your wheel nut, slide the spacer onto the spindle or axle, and reinstall your wheel. Ensure the spacer sits flush against the bearing or hub surface for optimal performance.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products From Vendor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/cfws14-carbon-fiber-wheel-spacer-1-4-wide-x-5-8-id-cfws14\"\u003eHigh-Performance Carbon Fiber 1\/4\" Wheel Spacer 5\/8\" ID for Karts\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/cfws18-carbon-fiber-wheel-spacer-1-8-wide-x-5-8-id-cfws18\"\u003eLightweight Carbon Fiber 1\/8\" Wheel Spacer 5\/8\" ID for Kart Speed\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Advanced Composites","offers":[{"title":"Default Title","offer_id":52565494825278,"sku":"CFWS12","price":4.08,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/wheelspacersfront-cfws12-carbon-fiber-wheel-spacer-1-2-wide-x-5-8-id-cfws12.jpg?v=1763116261"},{"product_id":"cfws14-carbon-fiber-wheel-spacer-1-4-wide-x-5-8-id-cfws14","title":"High-Performance Carbon Fiber 1\/4\" Wheel Spacer 5\/8\" ID for Karts","description":"\u003cul\u003e\n\u003cli\u003e1\/4\" width provides balanced spacing for dynamic handling.\u003c\/li\u003e\n\u003cli\u003eCarbon fiber construction endures impacts better than aluminum.\u003c\/li\u003e\n\u003cli\u003e5\/8\" ID for direct axle compatibility.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eSeeking to lighten your load without losing integrity? This spacer delivers, organizing your build for swift track dominance. Use SKU: CFWS14 to unlock superior lap times.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Why choose carbon fiber over aluminum wheel spacers for my kart?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Carbon fiber offers a superior strength-to-weight ratio compared to aluminum. It provides the necessary structural integrity to handle track impacts while reducing unsprung weight, which can improve your kart's overall handling and acceleration.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How do I determine if the 1\/4\" spacer is the right size for my setup?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Wheel spacers are used to fine-tune your kart's track width. If you need to adjust your scrub radius or clear components for better steering geometry, a 1\/4\" spacer is a standard increment for making precise adjustments to your front or rear axle spacing.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is this spacer compatible with standard 5\/8\" kart axles?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, this spacer features a 5\/8\" inner diameter (ID), making it a direct fit for standard 5\/8\" kart spindles and axles. Always ensure your axle surface is clean and free of debris before sliding the spacer on to ensure a flush fit.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I stack these spacers to achieve a wider offset?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e While you can stack spacers, it is generally recommended to use the fewest number of components possible to maintain structural rigidity. If you require a wider offset, consider using a single spacer of the appropriate width rather than stacking multiple thin ones.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Do I need special tools to install this wheel spacer?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e No special tools are required. Simply remove the wheel nut and wheel hub, slide the spacer onto the axle, and reinstall your components. Ensure that your axle nut is torqued to the manufacturer's specifications after installation.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products From Vendor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/cfws12-carbon-fiber-wheel-spacer-1-2-wide-x-5-8-id-cfws12\"\u003eAdvanced Carbon Fiber 1\/2\" Wheel Spacer 5\/8\" ID for Elite Kart Builds\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/cfws18-carbon-fiber-wheel-spacer-1-8-wide-x-5-8-id-cfws18\"\u003eLightweight Carbon Fiber 1\/8\" Wheel Spacer 5\/8\" ID for Kart Speed\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Advanced Composites","offers":[{"title":"Default Title","offer_id":52565506752830,"sku":"CFWS14","price":2.04,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/wheelspacersfront-cfws14-carbon-fiber-wheel-spacer-1-4-wide-x-5-8-id-cfws14.jpg?v=1763116262"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/collections\/wheel-hubs-2.webp?v=1777754781","url":"https:\/\/swiftkarting.com\/collections\/wheel-hubs-2.oembed","provider":"Swift Karting","version":"1.0","type":"link"}