{"title":"Weight Mounting Accessories","description":"\u003cp\u003eWeight mounting accessories are the fasteners used to attach ballast to a kart chassis or seat so the kart can meet class minimum weight. This category includes metric flanged nylock nuts, colored conical seat washers, and flat-head cap screws such as 8 mm FHCS in 70 mm length.\u003c\/p\u003e","products":[{"product_id":"weight-bracket-short-1-1-4-wb125","title":"Robust 1 1\/4\" Short Weight Bracket for Kart Performance Tuning","description":"\u003cul\u003e\n\u003cli\u003eDiscover the WB125: a 1 1\/4\" short bracket that locks weights firmly, boosting kart responsiveness.\u003c\/li\u003e\n\u003cli\u003eAluminum alloy ensures longevity and lightness for unrestricted velocity.\u003c\/li\u003e\n\u003cli\u003eIdeal for adjusting to driver weight or track specs swiftly.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eBy keeping weights close to the frame, it lowers drag and improves stability in high-speed sections. Track teams use this for methodical organization, turning complex balancing into a breeze. Gain that competitive whisper of an advantage. (SKU: WB125)\u003c\/p\u003e\u003cp\u003eSimple, effective—your path to faster laps.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How do I know if the 1 1\/4\" bracket is the right size for my kart?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e This bracket is designed specifically for 1 1\/4\" chassis rails. Measure the outer diameter of your frame tubing at the mounting point to ensure a secure, slip-free fit before installation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I use this bracket to adjust my kart's handling?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes. By moving weight closer to the frame or adjusting the placement along the rail, you can fine-tune your kart's center of gravity, which helps improve stability and cornering speed.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is the hardware included with the WB125 bracket?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The WB125 is the bracket itself. We recommend using high-quality bolts and lock nuts to ensure the weight remains secure under high-vibration racing conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Why choose aluminum alloy for a weight bracket?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Aluminum provides an excellent strength-to-weight ratio. It is durable enough to hold heavy lead ballast securely while remaining lightweight, ensuring you aren't adding unnecessary mass to your kart setup.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products From Vendor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/weight-bracket-short-3-4-wb34\"\u003eCompact 3\/4\" Short Weight Bracket for Precise Kart Balancing\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/weight-bracket-short-1-wb1\"\u003e1\" Short Weight Bracket for Enhanced Kart Stability and Speed\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/weight-bracket-short-1-1-8-wb118\"\u003e1 1\/8\" Short Weight Bracket for Custom Kart Weight Configurations\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/weight-bracket-long-1-1-4-wbl125\"\u003eDurable 1 1\/4\" Long Weight Bracket for Kart Race Optimization\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/steel-two-piece-3-4-lock-collar-lc34steel2p\"\u003eBlack Oxide Steel Two-Piece 3\/4 Inch Lock Collar for Kart Brackets\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Swift Karting","offers":[{"title":"Default Title","offer_id":52562260853054,"sku":"WB125","price":9.91,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/weightbrackets-weight-bracket-short-1-1-4-wb125_7c833d98-7b1a-42b5-bcf1-2e135efd2213.jpg?v=1763116421"},{"product_id":"conical-seat-washer-black-sold-each-km625b","title":"Kartech KM625B Black Anodized Conical Seat Washer - 8mm \/ 5\/16\" - Universal Fit","description":"\u003cp\u003eWhen you are upgrading your racing rig with premium performance parts, the Kartech KM625B Black Anodized Conical Seat Washer ensures your seat and ballast stay locked in under extreme G-forces. Designed specifically for 8mm and 5\/16\" flat head cap screws, this precision-machined aluminum washer delivers a centered, vibration-resistant clamping force that prevents hardware from pulling through your fiberglass or carbon fiber seat shell. By distributing the mechanical load evenly across a wider surface area, it eliminates the stress fractures commonly caused by standard flat washers during high-speed cornering.\u003c\/p\u003e\u003ch2\u003eSecuring Your Setup: Beyond Top Tire Brands and Best Helmets\u003c\/h2\u003e\u003cp\u003eYou spend hours researching the top tire brands and the best helmets to shave tenths off your lap time and keep yourself safe, but neglecting your seat hardware can instantly cost you a race. A loose seat shifts your center of gravity, disrupting chassis flex and handling. The Kartech KM625B conical washer guarantees that your seating position remains absolutely rigid, lap after lap. Whether you are building a fresh chassis from a bare go kart frame for sale, or you are fabricating custom drive train parts for an outlaw build, integrating these conical washers into your assembly is a non-negotiable step for professional-grade reliability.\u003c\/p\u003e\u003ch2\u003eEngineered for Maximum Durability and Aesthetic Appeal\u003c\/h2\u003e\u003cp\u003eCorrosion resistance and weight savings are critical in competitive karting. The KM625B features a stealthy black anodized finish that not only protects the aluminum from track debris and harsh cleaning chemicals but also seamlessly matches modern kart aesthetics. Sold individually, these washers are the perfect solution for mounting lead weights securely to your seat without damaging the resin. Don't let a cheap washer ruin your race weekend; demand the exact tolerances and proven durability of Kartech hardware.\u003c\/p\u003e\u003ch2\u003eTechnical Specifications \u0026amp; Key Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision Conical Profile:\u003c\/strong\u003e Self-centers 8mm or 5\/16\" flat head cap screws for a perfectly flush, zero-play installation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptimized Load Distribution:\u003c\/strong\u003e Prevents bolt pull-through and stress cracks in expensive fiberglass or carbon fiber racing seats.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVibration-Resistant Seating:\u003c\/strong\u003e Maintains strict torque specs even under the extreme harmonic vibrations of 2-stroke and 4-stroke engines.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAerospace-Grade Aluminum:\u003c\/strong\u003e Delivers maximum clamping force while keeping your overall kart weight to an absolute minimum.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBlack Anodized Finish:\u003c\/strong\u003e Provides superior corrosion resistance while offering a clean, professional look that matches any chassis.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUniversal Hardware Compatibility:\u003c\/strong\u003e Engineered to flawlessly accommodate standard metric (8mm) and imperial (5\/16\") countersunk fasteners.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMulti-Purpose Application:\u003c\/strong\u003e Ideal for securing racing seats, mounting ballast weights, or fastening custom bodywork panels.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Why should I use a conical washer instead of a standard flat washer for my kart seat?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Standard flat washers do not provide a flush fit for countersunk (flat head) screws. The Kartech KM625B is specifically machined to match the angle of your screw head, which self-centers the hardware and distributes clamping force evenly to prevent the bolt from pulling through your fiberglass or carbon fiber seat.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Will these washers work with both metric and imperial hardware?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes. The KM625B is engineered for universal compatibility with both 8mm and 5\/16\" flat head cap screws, making it a versatile choice for various kart chassis and custom builds.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I use these washers to mount ballast weights?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Absolutely. These washers are excellent for securing lead ballast weights to your seat. The conical design ensures the weight is held securely without damaging the resin of the seat shell, even under high-vibration conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How many washers come in an order?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e These washers are sold individually. We recommend purchasing a full set to ensure all your seat and ballast mounting points have the same professional-grade, vibration-resistant hardware.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Do I need to use a specific torque setting when installing these?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e While the washer helps maintain torque, always follow your chassis manufacturer's recommended torque specifications for seat mounting hardware to avoid cracking the seat material.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products From Vendor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/metric-weight-bracket-short-32mm-kmwb32\"\u003eEfficient 32mm Short Metric Weight Bracket for Precise Kart Tuning\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/metric-weight-bracket-short-30mm-kmwb30\"\u003eKartech KMWB30 Short Metric Weight Bracket - 30mm Frame - CIK\/FIA\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/metric-weight-bracket-32mm-km235\"\u003eHigh-Strength 32mm Metric Long Arm Weight Bracket for Racing\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/metric-weight-bracket-30mm-km234\"\u003ePremium 30mm Metric Long Arm Weight Bracket for Karts\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Kartech","offers":[{"title":"Default Title","offer_id":52562261344574,"sku":"KM625B","price":5.93,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/weightmountingaccessories-conical-seat-washer-black-sold-each-km625b_ca22fa6f-73b7-455f-b310-d9bfffe94228.jpg?v=1763116451"},{"product_id":"conical-seat-washer-blue-sold-each-km625blu","title":"Blue Anodized Conical Seat Washer for Secure Kart Mounting","description":"\u003cp\u003eSecure your kart's components with precision using this blue anodized aluminum conical seat washer. Engineered to pair seamlessly with 8mm or 5\/16 flat head cap screws, it distributes load evenly, reducing wear on mounting points in high-vibration environments like the track.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurability Boost:\u003c\/strong\u003e Anodized finish resists corrosion, keeping your setup reliable race after race.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVersatile Fit:\u003c\/strong\u003e Perfect for seat mounting hardware or weight accessories, ensuring everything stays locked in place.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePerformance Edge:\u003c\/strong\u003e By preventing slippage, it helps maintain optimal weight distribution for better handling and quicker cornering.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eSold individually (SKU: KM625BLU), this washer is a small but essential upgrade for any serious kart racer aiming to shave seconds off their lap times through superior organization and stability.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What size screw is this conical seat washer compatible with?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e This washer is specifically engineered to pair with 8mm or 5\/16 flat head cap screws, ensuring a flush, secure fit for your kart's mounting points.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Why should I use a conical washer instead of a standard flat washer for my seat?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The conical shape allows the washer to seat perfectly into the countersunk holes of your kart seat or weight brackets. This distributes the clamping load more evenly, which prevents the fiberglass or plastic from cracking under high-vibration racing conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does the anodized finish provide any functional benefit?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, the blue anodized finish provides a hardened, corrosion-resistant layer that protects the aluminum from the elements and track debris, ensuring the hardware remains easy to remove and adjust throughout the racing season.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Are these washers sold as a set or individually?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e These washers are sold individually (per piece), allowing you to purchase the exact quantity needed for your specific seat or ballast mounting configuration.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products From Vendor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/conical-seat-washer-silver-sold-each-km625s\"\u003eSilver Aluminum Conical Seat Washer for Precision Kart Setup\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Kart Mfg","offers":[{"title":"Default Title","offer_id":52562261541182,"sku":"KM625BLU","price":4.93,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/weightmountingaccessories-conical-seat-washer-blue-sold-each-km625blu_19c83e9d-4c1f-443d-98c8-555afc6433da.jpg?v=1763116335"},{"product_id":"conical-seat-washer-red-sold-each-km625r","title":"Target Distributing KM625R Red Anodized Conical Seat Washer - 8mm \/ 5\/16\" ID - Universal Fit","description":"\u003cp\u003eLocking down your chassis with high-quality racing go kart parts is the difference between a podium finish and a DNF, and this red anodized conical seat washer delivers the exact clamping force needed to eliminate track-induced loosening. Designed specifically for 8mm or 5\/16\" flat head cap screws, the KM625R washer creates a flush, conical seal against your fiberglass or carbon fiber seat. When you are pulling high lateral Gs through tight apexes, standard flat washers dig into the composite, causing stress fractures and seat shift. This conical design distributes the load evenly, ensuring your seat and weight mounting accessories remain perfectly rigid throughout the most grueling heat races.\u003c\/p\u003e\u003ch2\u003ePrecision Hardware for Cheap Go Karts and Pro Chassis\u003c\/h2\u003e\u003cp\u003eWhether you are restoring a vintage chassis, upgrading cheap go karts for weekend club racing, or fine-tuning a national-level rig, hardware reliability is non-negotiable. The vibrant red anodized aluminum finish isn't just for aesthetics; it provides a hardened, corrosion-resistant barrier against track debris, fuel spills, and environmental wear. A rigid seat mount directly translates to better chassis feedback, allowing you to feel the track surface and optimize your tire grip.\u003c\/p\u003e\u003ch2\u003eSecuring Your Setup: Beyond Wheel Bolts and Engines for Sale\u003c\/h2\u003e\u003cp\u003eRacers spend hours searching for the perfect engines for sale or dialing in their tire pressures, but often overlook the critical fasteners holding the kart together. Just like high-tensile wheel bolts, your seat hardware must withstand extreme vibration and torsional flex. By integrating these conical washers into your weight mounting accessories, you prevent the lead ballast from vibrating loose and altering your cross-weight percentages mid-race.\u003c\/p\u003e\u003cstrong\u003eTechnical Specifications \u0026amp; Features:\u003c\/strong\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptimized Load Distribution:\u003c\/strong\u003e Conical profile prevents stress fractures in fiberglass and carbon fiber seats.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExact Fitment:\u003c\/strong\u003e Precision-machined for 8mm or 5\/16\" flat head cap screws.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAerospace-Grade Aluminum:\u003c\/strong\u003e Lightweight construction minimizes rotational and static mass.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRed Anodized Finish:\u003c\/strong\u003e Delivers superior corrosion resistance and a professional paddock aesthetic.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVibration Dampening:\u003c\/strong\u003e Maintains torque spec under extreme RPMs and track-induced harmonics.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUniversal Application:\u003c\/strong\u003e Ideal for seat struts, weight ballast mounting, and custom bodywork integration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChassis Stability:\u003c\/strong\u003e Eliminates seat shift for consistent driver feedback and smoother 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 use a conical washer instead of a standard flat washer for my kart seat?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Standard flat washers can dig into fiberglass or carbon fiber seats, causing stress fractures and allowing the seat to shift under high G-forces. The conical design of the KM625R distributes clamping force evenly, protecting your seat material and ensuring a rigid, secure mount.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What size bolt is this washer designed for?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e This washer is precision-machined for 8mm or 5\/16\" flat head cap screws. It is designed to sit flush within the seat mounting hole for a clean, professional finish.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I use these washers for mounting lead ballast?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes. These washers are excellent for weight mounting accessories. They help maintain torque specifications under extreme vibration, preventing ballast from vibrating loose and ensuring your cross-weight percentages remain consistent throughout the race.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is the red anodized finish just for looks?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e While it provides a professional paddock aesthetic, the anodized finish also creates a hardened, corrosion-resistant barrier that protects the aluminum from fuel spills, track debris, and environmental wear.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How many washers come in an order?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e These washers are sold individually (each), allowing you to purchase the exact quantity needed for your specific seat or ballast mounting configuration.\u003c\/p\u003e","brand":"Target Distributing","offers":[{"title":"Default Title","offer_id":52562261573950,"sku":"KM625R","price":4.93,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/weightmountingaccessories-conical-seat-washer-red-sold-each-km625r_b32731e0-050d-45ac-81e0-42e271ae5575.jpg?v=1763116336"},{"product_id":"conical-seat-washer-silver-sold-each-km625s","title":"Silver Aluminum Conical Seat Washer for Precision Kart Setup","description":"\u003cul\u003e\n\u003cli\u003ePrecision-engineered silver aluminum construction for lightweight strength.\u003c\/li\u003e\n\u003cli\u003eIdeal compatibility with 8mm or 5\/16 flat head cap screws in kart applications.\u003c\/li\u003e\n\u003cli\u003eEnhances weight mounting by providing a stable, conical interface that resists shear forces.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eTrack pros know that reliability starts with the basics—this washer delivers by preventing bolt pull-through, keeping your seat and weights firmly in place for optimal aerodynamics and speed.\u003c\/p\u003e\u003cp\u003eWhether tweaking your setup between heats or building from scratch, it promotes better organization at the pit, saving time and boosting confidence. Sold each (SKU: KM625S), it's a must-have for any kart enthusiast focused on peak performance.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What size bolt is this conical washer designed for?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e This washer is precision-engineered for use with 8mm or 5\/16-inch flat head cap screws, ensuring a perfect fit for standard kart hardware.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Why should I use a conical washer instead of a standard flat washer?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The conical shape provides a self-centering interface that distributes pressure more evenly. This helps prevent bolt pull-through on plastic or fiberglass seats and resists shear forces better than a flat washer.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is this washer sold as a set or individually?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e This item is sold individually (each), allowing you to purchase the exact quantity needed for your specific seat or weight mounting configuration.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I use these washers on my seat mounting bolts?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, these are ideal for seat mounting. They provide a stable, secure interface that keeps your seat firmly in place, which is critical for maintaining proper chassis flex and driver position.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products From Vendor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/conical-seat-washer-blue-sold-each-km625blu\"\u003eBlue Anodized Conical Seat Washer for Secure Kart Mounting\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Kart Mfg","offers":[{"title":"Default Title","offer_id":52562262065470,"sku":"KM625S","price":2.63,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/weightmountingaccessories-conical-seat-washer-silver-sold-each-km625s_6488024a-6352-4638-b27e-49a45058f37c.jpg?v=1763116185"},{"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":"fhcs-with-drilled-shank-70mm-length-fhcs8mx70mm-ds","title":"Secure 70mm Drilled Shank Flat Head Cap Screw for Karts","description":"\u003cstrong\u003eSafety first, speed always:\u003c\/strong\u003e The FHCS8MX70MM-DS 70mm FHCS features a drilled shank for pinning security.\u003cul\u003e\n\u003cli\u003eFully threaded 8mm x 1.25 for deep, secure engagement.\u003c\/li\u003e\n\u003cli\u003eIncludes round safety pin to thwart loosening from track bumps.\u003c\/li\u003e\n\u003cli\u003eFlush flat head for smooth, aero-friendly surfaces.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003ePerfect for bodywork tasks demanding unyielding holds. (SKU: FHCS8MX70MM-DS)\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Why is the drilled shank feature important for karting?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The drilled shank allows you to pass a safety pin through the bolt after installation. This provides a mechanical lock that prevents the screw from vibrating loose due to track bumps and high-frequency engine vibrations, ensuring your bodywork stays secure during a race.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What does the 8mm x 1.25 specification mean?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e This refers to the metric thread size. The 8mm is the diameter of the bolt, and the 1.25 is the thread pitch (the distance between threads in millimeters). This is a standard coarse thread size commonly used in kart chassis and bodywork components.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I use this screw for applications other than bodywork?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e While designed for bodywork, the flat head design is ideal for any application where you need a flush, aerodynamic surface. Always ensure the 70mm length is appropriate for your specific mounting point to avoid interference with internal components.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Do I need special tools to install this fastener?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e You will need a standard hex key (Allen wrench) that matches the flat head cap screw drive size. Once tightened, simply insert the included round safety pin through the 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\u003c\/ul\u003e","brand":"Swift Karting","offers":[{"title":"Default Title","offer_id":52562263998782,"sku":"FHCS8MX70MM-DS","price":2.56,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/weightmountingaccessories-fhcs-with-drilled-shank-70mm-length-fhcs8mx70mm-ds_a251c0c4-a561-44e5-9074-802482dd460e.jpg?v=1763116310"},{"product_id":"fhcs-with-drilled-shank-80mm-length-fhcs8mx80mm-ds","title":"Safety-Enhanced 80mm Drilled Shank Flat Head Cap Screw","description":"\u003cp\u003eFully threaded reliability meets safety innovation in the FHCS8MX80MM-DS, an 80mm FHCS with drilled shank.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e8mm diameter, 1.25 pitch for strong, precise threading in kart frames.\u003c\/li\u003e\n\u003cli\u003eDrilled shank accepts included round safety pin to lock against vibrations.\u003c\/li\u003e\n\u003cli\u003eIdeal for critical weight attachments where failure isn't an option.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eThis screw's design keeps connections rock-solid, letting you race aggressively without hardware worries. (SKU: FHCS8MX80MM-DS)\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Why is the drilled shank design important for karting?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e In high-vibration environments like racing karts, standard bolts can loosen over time. The drilled shank allows you to insert a safety pin, which physically locks the fastener in place, ensuring your critical components stay secure throughout the race.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What size safety pin should I use with this bolt?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e This bolt is designed to be used with standard-sized cotter pins or R-clips that fit through the pre-drilled hole in the shank. Ensure the pin is fully seated to prevent accidental dislodging.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I use this bolt for any application on my kart?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e While it is a versatile 8mm hardware piece, it is specifically recommended for critical weight attachments or areas prone to high vibration where hardware failure could compromise safety or performance.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is the 1.25 pitch compatible with standard kart frames?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, the 8mm x 1.25 pitch is a common metric thread size used extensively in kart chassis construction and component mounting.\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-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\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\/1-1-4-aluminum-axle-lock-collar-lc125\"\u003eDurable 1 1\/4 Inch Aluminum Axle Lock Collar for Secure Kart Axle Positioning\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Swift Karting","offers":[{"title":"Default Title","offer_id":52562264031550,"sku":"FHCS8MX80MM-DS","price":2.56,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/weightmountingaccessories-fhcs-with-drilled-shank-80mm-length-fhcs8mx80mm-ds_24b1b7cf-6bd4-4f13-9254-8239774d4d49.jpg?v=1763116311"},{"product_id":"pm-116116-seat-weight-bolt-mounting-kit-pm-116116","title":"Durable Seat Weight Bolt Mounting Kit for Kart Longevity","description":"\u003cp\u003eEver watched a race ruined by a failing seat mount? This comprehensive kit changes that narrative, fortifying your kart's seating system against the rigors of competitive driving.\u003c\/p\u003e\u003cp\u003eThe PM-116116 kit is tailored for 5\/16\" carriage bolts, distributing forces evenly to avoid damaging seat holes over time. Its components work in harmony: stainless steel plates provide unyielding support, rubber washers cushion vibrations, and rivets lock everything into a tamper-proof assembly.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProlongs Seat Life:\u003c\/strong\u003e Stops expansion and rounding, saving you replacement costs and downtime.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptimizes Weight Distribution:\u003c\/strong\u003e Secure mounts mean precise ballast placement, improving handling and lap times.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEasy Installation:\u003c\/strong\u003e Rivet-based design allows quick setup at the track, keeping your pit organized.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorrosion-Resistant:\u003c\/strong\u003e Stainless materials withstand moisture and sweat for season-long reliability.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eIn kart racing, where every gram counts, this kit indirectly accelerates your performance by maintaining structural integrity under high loads. Whether you're a novice tuner or a seasoned mechanic, it streamlines maintenance, ensuring your focus stays on speed rather than repairs. Compatible with various chassis, it's a smart investment for enduring track success (SKU: PM-116116).\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is this kit compatible with all kart seats?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The PM-116116 kit is specifically designed for 5\/16\" carriage bolts. It is compatible with most standard racing kart seats that utilize this common bolt size, providing a secure, reinforced mounting point.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Why should I use this kit instead of standard washers?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Standard washers often allow the seat material to crack or the holes to \"egg out\" under the high G-forces of karting. This kit uses stainless steel plates to distribute the load across a wider surface area, preventing seat damage and ensuring your ballast remains securely positioned.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does the rivet-based design require special tools?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, you will need a standard rivet gun to complete the installation. This design is preferred by mechanics because it creates a tamper-proof, vibration-resistant assembly that won't loosen during a race, unlike traditional nut-and-bolt setups.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How does this kit help with kart handling?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e By preventing seat movement and allowing for precise ballast placement, this kit ensures your center of gravity remains consistent throughout the race. A secure seat is essential for accurate chassis tuning and predictable handling.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products From Vendor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/pm-117205-heel-rest-kit-for-3-4-tubes-pm-117205\"\u003ePerformance Mfg PM-117205 Heel Rest Kit - 3\/4\" Tube Fitment - Entry-Level \u0026amp; Rookie Class\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/pm-117204-heel-rest-kit-for-1-0-tubes-pm-117204\"\u003eHeel Rest Kit for 1 Inch Kart Tubes\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":52562265473342,"sku":"PM-116116","price":42.62,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/weightmountingaccessories-pm-116116-seat-weight-bolt-mounting-kit-pm-116116_fc6f7d5c-2f0f-47c6-bbd9-c63ecb18d5c5.jpg?v=1763116521"},{"product_id":"pc-6410-weight-mounting-tab-sold-each-pc-6410","title":"Weight Mounting Tab for Secure Kart Ballast Attachment","description":"\u003cp\u003eAdjust your kart's weight distribution effortlessly with the PC-6410 Weight Mounting Tab, built to handle standard 5-pound lead weights securely.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e3\/8-inch hole versatile for weights or other attachments.\u003c\/li\u003e\n\u003cli\u003eMust be welded to chassis for permanent, vibration-resistant hold.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eThis tab allows precise ballast placement, improving cornering balance and straight-line acceleration. It keeps your setup organized, ensuring weights don't shift mid-race. Ideal for class compliance and performance tuning. SKU PC-6410, sold each.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How do I install the PC-6410 Weight Mounting Tab?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e This tab is designed to be welded directly onto your kart's chassis. We recommend positioning it in a location that optimizes your weight distribution and then using a professional-grade welder to ensure a permanent, vibration-resistant bond to the frame.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What size weights are compatible with this tab?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The tab is specifically engineered to securely hold standard 5-pound lead ballast weights. It features a 3\/8-inch hole, making it versatile enough for various mounting hardware or other chassis attachments.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Why is it important to weld the tab rather than using a clamp?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e In high-vibration racing environments, welded tabs provide the most secure and reliable attachment point. Welding prevents the ballast from shifting or vibrating loose during a race, which is critical for maintaining consistent handling and meeting class weight compliance.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I use this tab for other chassis accessories?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, while primarily designed for lead ballast, the 3\/8-inch mounting hole makes this tab a useful addition for securing other lightweight chassis components or custom brackets, provided they are within the structural limits of the tab.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products From Vendor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/braac-adjustable-axle-cassette-braac\"\u003eVersatile Adjustable Axle Cassette for Wedge and Lead Adjustments\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/kmac-1-1-4-cnc-axle-cassettes-each-bearings-sold-separately-kmac\"\u003ePerformance Manufacturing PM-12-3\/8 CNC Axle Cassette - 1 1\/4-Inch - American Karts\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/pm-12sl10-pmi-axiom-cassette-pm-12sl10\"\u003ePMI Axiom Axle Cassette - Versatile Left and Right Fit with Bearing Ring\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/pm-12-40-10-metric-axle-cassette-pm-12-40-10\"\u003eBlack Anodized Metric Axle Cassette for 80mm OD Bearings\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/pm-012300r-axle-cassette-2025-style-pm-012300r\"\u003e2025-Style Clamshell Axle Cassette for Smooth Kart Drive-Line Performance\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Performance Manufacturing","offers":[{"title":"Default Title","offer_id":52565273641278,"sku":"PC-6410","price":2.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/floorpantab-pc-6410-weight-mounting-tab-sold-each-pc-6410.jpg?v=1763116190"},{"product_id":"puft-fuel-tank-ballast-k155b","title":"PUFT Fuel Tank Ballast for Kart Weight Distribution","description":"\u003cul\u003e\n\u003cli\u003ePrecision-weighted design integrates directly with PUFT fuel tanks.\u003c\/li\u003e\n\u003cli\u003eAdjusts kart's center of gravity for sharper turns and quicker recoveries.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eStruggling with uneven handling as your tank lightens? The PUFT Fuel Tank Ballast solves that by providing targeted weight that keeps your kart planted, especially in tight circuits where balance is everything.\u003c\/p\u003e\u003cp\u003eThis compact component (SKU: K155B) is simple to add during routine maintenance, yet its impact on performance is profound. Racers report noticeable improvements in lap consistency, turning good runs into podium finishes. Whether you're a junior driver or pro, it helps organize your chassis for optimal speed without constant readjustments.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How does the PUFT Fuel Tank Ballast improve my kart's handling?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e As your fuel level drops during a race, the kart's weight distribution shifts. This ballast provides consistent weight near the fuel tank, preventing the chassis from becoming too light or unbalanced, which helps maintain grip and stability through tight corners.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is the K155B ballast compatible with all fuel tanks?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e This ballast is specifically designed for precision integration with PUFT fuel tanks. We recommend using it with compatible PUFT systems to ensure a secure fit and optimal weight distribution.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How difficult is the installation process?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The ballast is designed for easy installation during your routine kart maintenance. It integrates directly with your existing PUFT fuel tank setup, requiring no complex modifications to your chassis.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I use this ballast for both junior and pro-level racing?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes. Whether you are a junior driver learning to manage chassis balance or a pro looking for that extra edge in lap consistency, this ballast helps keep your kart planted and predictable throughout the entire race.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products From Vendor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/puftc-replacement-cap-for-puft3-puft5-puftc\"\u003ePUFTC Replacement Cap for PUFT3 and PUFT5 Fuel Tanks\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/puft-replacement-outlet-fitting-cap-k193n\"\u003ePUFT Replacement Outlet Fitting Cap in Black\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PUFT","offers":[{"title":"Default Title","offer_id":52566442311998,"sku":"K155B","price":6.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/tankstrapscapspetcocks-puft-fuel-tank-ballast-k155b.jpg?v=1763116554"},{"product_id":"race-ready-pre-drilled-lead-weight-kit","title":"Lead Weight + Pre-Drilled + Hardware Included - Ballast Kit Ready for Kart Racing 2Lb \u0026 5LB increments.","description":"\u003cp\u003eThis race-ready pre-drilled lead weight comes ready to bolt on. Each weight includes one nut \/ bolt \/ washer kit so you can mount it without hunting for hardware that actually fits.\u003c\/p\u003e\n\n\u003cp\u003ePick the 2 lb or 5 lb option at checkout. The 2 lb weight comes plus or minus 0.2 lb. The 5 lb weight comes plus or minus 0.5 lb. Washers in the kit are described as legal, but always check your series rules for ballast, mounting, and any marking requirements.\u003c\/p\u003e\n\n\u003cp\u003eNeed a spare or a longer bolt for a stacked install? Grab extra hardware here:\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/swiftkarting.com\/products\/fhcs-with-drilled-shank-70mm-length-fhcs8mx70mm-ds\"\u003e70mm Drilled Shank Flat Head Cap Screw\u003c\/a\u003e .. $2. Drilled shank so you can safety wire it.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/swiftkarting.com\/products\/conical-seat-washer-black-sold-each-km625b\"\u003eKartech KM625B 8mm \/ 5\/16\" Conical Seat Washer\u003c\/a\u003e .. $5 each. Use these when you mount weight to a fiberglass or carbon seat so the flat-head bolt sits flush and does not pull through the shell.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eEach lead weight already includes one nut \/ bolt \/ washer kit. Order extra bolts and conical washers only if you are stacking weights, replacing worn hardware, or mounting through a thicker seat and bracket stack.\u003c\/p\u003e\n\n\u003ch3\u003eWeight brackets for chassis ballast\u003c\/h3\u003e\n\n\u003cp\u003e\u003ca href=\"https:\/\/swiftkarting.com\/collections\/kart-weight-brackets-chassis-ballast-mounts\"\u003eWeight brackets\u003c\/a\u003e ($5 to $16) are the clamps used to bolt ballast to a kart chassis so the complete package can meet a class minimum weight. More important, get the weight moved to the right areas for cross weight and four-corner balance. We carry short and long brackets for common round-tube sizes:\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e1 1\/8 in .. 29 mm. For 28 mm tubing, wrap a layer of grip paper around the tube before mounting the bracket.\u003c\/li\u003e\n\u003cli\u003e1 1\/4 in .. 32 mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eUse the seat for driver-side ballast. Use a rail bracket when the weight needs to live on the chassis tube instead of the seat shell.\u003c\/p\u003e\n\n\u003ch3\u003eSeat padding\u003c\/h3\u003e\n\n\u003cp\u003eIf the weight sits against the seat, add padding so the lead does not chew the shell or the driver. Shop \u003ca href=\"https:\/\/swiftkarting.com\/collections\/kart-seat-upholstery-adhesive-padding-karting-parts\"\u003ekart seat upholstery, adhesive, and padding\u003c\/a\u003e for inside-the-seat foam and cover material.\u003c\/p\u003e\n\n\u003ch3\u003eWhat you get\u003c\/h3\u003e\n\n\u003cul\u003e\n\u003cli\u003ePre-drilled lead weight\u003c\/li\u003e\n\u003cli\u003eOne nut \/ bolt \/ washer kit included with each weight\u003c\/li\u003e\n\u003cli\u003e2 lb option: plus or minus 0.2 lb\u003c\/li\u003e\n\u003cli\u003e5 lb option: plus or minus 0.5 lb\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow to install it so it stays put\u003c\/h3\u003e\n\n\u003cp\u003eA loose weight can crack a seat, strip hardware, or come off on track. Sit the weight flat against the seat or bracket. Use the included kit first. Add a \u003ca href=\"https:\/\/swiftkarting.com\/products\/conical-seat-washer-black-sold-each-km625b\"\u003econical washer\u003c\/a\u003e ($5) on the seat side when you are going through fiberglass or carbon. Use a \u003ca href=\"https:\/\/swiftkarting.com\/products\/fhcs-with-drilled-shank-70mm-length-fhcs8mx70mm-ds\"\u003e70mm drilled-shank flat head cap screw\u003c\/a\u003e ($2) if the included bolt is too short for a stacked mount.\u003c\/p\u003e\n\n\u003cp\u003eTighten until it is locked down, not until you crush the seat. Recheck after the first session. Recheck again anytime you change seat position or add more ballast.\u003c\/p\u003e\n\n\u003cp\u003eWeight location changes how the kart turns. Move one piece at a time, write it down, and stay inside your class rules.\u003c\/p\u003e\n\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\n\u003cp\u003e\u003cstrong\u003eDoes each weight include hardware?\u003c\/strong\u003e\u003cbr\u003e\nYes. Each lead weight comes with one nut \/ bolt \/ washer kit.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eDo I still need extra bolts?\u003c\/strong\u003e\u003cbr\u003e\nOnly if you stack weights, replace worn hardware, or need a longer bolt. Start with the \u003ca href=\"https:\/\/swiftkarting.com\/products\/fhcs-with-drilled-shank-70mm-length-fhcs8mx70mm-ds\"\u003e70mm drilled shank FHCS\u003c\/a\u003e ($2) and \u003ca href=\"https:\/\/swiftkarting.com\/products\/conical-seat-washer-black-sold-each-km625b\"\u003econical washers\u003c\/a\u003e ($5).\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eCan I bolt this to the chassis instead of the seat?\u003c\/strong\u003e\u003cbr\u003e\nYes. Use a matching tube clamp from the \u003ca href=\"https:\/\/swiftkarting.com\/collections\/kart-weight-brackets-chassis-ballast-mounts\"\u003eweight bracket collection\u003c\/a\u003e ($5 to $16). Match the bracket to your rail: 3\/4 in (19 mm), 1 in (25 mm), 1 1\/8 in (29 mm), or 1 1\/4 in (32 mm).\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eHow close is the actual weight?\u003c\/strong\u003e\u003cbr\u003e\n2 lb is plus or minus 0.2 lb. 5 lb is plus or minus 0.5 lb.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eIs it pre-drilled?\u003c\/strong\u003e\u003cbr\u003e\nYes.\u003c\/p\u003e\n\n\u003ch3\u003eMarginal Gains Tip\u003c\/h3\u003e\n\n\u003cp\u003eDon't forget to balance your tires. Chassis ballast gets you to class weight. Wheel balance keeps the kart from hopping and chewing the fronts. Use the \u003ca href=\"https:\/\/swiftkarting.com\/products\/wheel-weight-kit-ww\"\u003eSelf-Adhesive Wheel Weight Kit\u003c\/a\u003e ($9) and stick the weights on the inside of the rim after you find the heavy spot.\u003c\/p\u003e","brand":"Swift Karting","offers":[{"title":"2 lb w\/ Hardware + Painted + Drilled","offer_id":52788843479358,"sku":"SK-2lb-Predrilled-W-Bolt","price":15.25,"currency_code":"USD","in_stock":true},{"title":"5 lb w\/ Hardware + Painted + Drilled","offer_id":53298500272446,"sku":"SK-5lb-Predrilled-W-Bolt","price":25.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/lead-weight-predilled-nut-bolt-painted-white34_7c95365b-e2f8-43ee-9263-692894512ccc.jpg?v=1789025266"},{"product_id":"8mm-flat-head-cap-screw-fhcs-70mm-length-stainless-steel","title":"8mm Flat Head Cap Screw (FHCS) - 70mm Length, Stainless Steel","description":"\u003cp\u003eUpgrade your kart's seat mounting with this reliable 8mm Flat Head Cap Screw (FHCS) measuring 70mm in length. Crafted from durable stainless steel, this fastener offers excellent corrosion resistance, making it ideal for the demanding conditions of kart racing and track environments.\u003c\/p\u003e\u003cp\u003eThe 70mm length is the perfect fit for securely mounting LN5#W components directly to seats, ensuring a stable and vibration-resistant connection. For added versatility, it works well on lower seat mounting applications when paired with spacers. If a shorter length is required, simply cut it to your exact specifications without compromising strength or integrity.\u003c\/p\u003e\u003cp\u003eFeaturing an 8mm diameter with a precise 1.25mm pitch threading, this FHCS provides a strong, reliable hold that meets the needs of competitive karting setups. The flat head design allows for a flush, low-profile installation, reducing drag and maintaining a clean aesthetic on your kart's chassis or seat assembly.\u003c\/p\u003e\u003cp\u003eStainless steel construction ensures longevity, even with repeated installations and removals during maintenance or adjustments. This screw is a must-have in any kart builder's toolkit, supporting safe and precise assembly for optimal driver performance and comfort.\u003c\/p\u003e\u003cp\u003eWhether you're preparing for club races, practice sessions, or national events, this fastener delivers the quality and fit you can trust. Keep your seat secure and your kart performing at its best.\u003c\/p\u003e\u003ch2\u003eKey Features:\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e8mm diameter x 70mm length\u003c\/li\u003e\n\u003cli\u003e1.25mm pitch threading\u003c\/li\u003e\n\u003cli\u003eStainless steel for corrosion resistance\u003c\/li\u003e\n\u003cli\u003eFlat head for flush mounting\u003c\/li\u003e\n\u003cli\u003eVersatile for LN5#W seat mounting or custom cuts\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFAQ\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhat is the exact size and material?\u003c\/strong\u003e 8mm diameter, 70mm length, stainless steel with 1.25 pitch threading.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhat is it used for?\u003c\/strong\u003e Perfect for mounting LN5#W to seats; also lower seat mounting with spacers or cut to length.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCan it be modified?\u003c\/strong\u003e Yes, cut to custom length as needed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIs it corrosion-resistant?\u003c\/strong\u003e Yes, made from stainless steel for durability in racing conditions.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Swift Karting","offers":[{"title":"Default Title","offer_id":53243916124478,"sku":"8MMX70MMFHCS","price":1.2,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/8MM_FHCS_70mm_Length.webp?v=1774893126"},{"product_id":"8mm-fhcs-80mm-stainless-steel","title":"8mm x 80mm Stainless FHCS Bolt for Kart Seat Mounting","description":"\u003cp\u003eThis stainless steel 8mm FHCS bolt delivers 80mm length with 1.25 pitch threading for secure fastening in your kart.\u003c\/p\u003e\u003cp\u003eIt is the perfect length for mounting LN5#W to seats. The same bolt also supports lower seat mounting when paired with spacers and can be cut to length for custom applications.\u003c\/p\u003e\u003ch2\u003eFAQs\u003c\/h2\u003e\u003ch3\u003eWhat material is the bolt?\u003c\/h3\u003e\u003cp\u003eStainless steel for strength and corrosion resistance.\u003c\/p\u003e\u003ch3\u003eWhat are the exact specs?\u003c\/h3\u003e\u003cp\u003e8mm diameter, 80mm length, and 8mm x 1.25 pitch.\u003c\/p\u003e\u003ch3\u003eCan it be used for seat mounting?\u003c\/h3\u003e\u003cp\u003eYes, specifically for LN5#W seats or lower mounting with spacers.\u003c\/p\u003e","brand":"Swift Karting","offers":[{"title":"Default Title","offer_id":54336401703230,"sku":"8MMx80MMFHCS","price":1.67,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/8MM_FHCS_80mm_Length.webp?v=1787801200"},{"product_id":"8mm-fhcs-90mm-length","title":"Stainless Steel 8mm x 90mm Flat Head Cap Screw for Kart Mounting","description":"\u003cp\u003eThis stainless steel 8mm FHCS delivers reliable strength and corrosion resistance for kart hardware needs. Measuring 90mm long, it provides the exact fit required for multiple applications.\u003c\/p\u003e\u003cp\u003eThe bolt is the perfect length for mounting LN5#W to brackets. It also works for lower seat mounting when used with spacers and can be cut to suit specific requirements.\u003c\/p\u003e\u003cp\u003eThreaded at 8mm x 1.25 pitch, it ensures a secure hold in standard kart setups.\u003c\/p\u003e\u003ch2\u003eFAQs\u003c\/h2\u003e\u003ch3\u003eWhat material is this 8mm FHCS?\u003c\/h3\u003e\u003cp\u003eIt is made from stainless steel for durability and rust resistance.\u003c\/p\u003e\u003ch3\u003eWhat is the thread pitch on this bolt?\u003c\/h3\u003e\u003cp\u003eThe thread pitch is 8mm x 1.25.\u003c\/p\u003e\u003ch3\u003eIs it suitable for seat mounting?\u003c\/h3\u003e\u003cp\u003eYes, it works for lower seat mounting when combined with spacers.\u003c\/p\u003e\u003ch3\u003eWhat is the primary use of this 90mm fastener?\u003c\/h3\u003e\u003cp\u003eIt is the perfect length for mounting LN5#W to brackets.\u003c\/p\u003e","brand":"Swift Karting","offers":[{"title":"Default Title","offer_id":54336437387582,"sku":"8MMX90MMFHCS","price":2.03,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/8MM_FHCS_90mm_Length.webp?v=1787801249"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/collections\/weightmountingaccessories-8fln-metric-flanged-nylock-nut-sold-each-8fln_16a9698f-89a3-4ec8-a647-ab7ec17370ac.jpg?v=1788963797","url":"https:\/\/swiftkarting.com\/collections\/kart-ballast-weight-mounting-hardware-nuts-washers-bolts.oembed","provider":"Swift Karting","version":"1.0","type":"link"}