{"title":"PMI Mini Gear System","description":"\u003cp\u003eThe PMI Mini Gear System is a compact rear-drive setup used on smaller karts: interchangeable mini sprockets (commonly #35 chain), matching sprocket hubs, and gear guards. Hubs in this line include 1.250 in and 40 mm bore options so the sprocket stack fits the axle you run.\u003c\/p\u003e","products":[{"product_id":"pm-15m-40-mini-sprocket-hub-40mm-pm-15m-40","title":"Compact 40mm Mini Sprocket Hub for Precision Drive","description":"\u003cp\u003eEngineered for kart racers who demand unwavering reliability, the PM-15M-40 Mini Sprocket Hub 40mm stands out in the drive-line components category. Specifically tailored for PMI Mini Gears, this hub measures a precise 40mm, allowing for a snug fit that minimizes slippage and maximizes torque delivery to your rear axle.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCompatible solely with PMI Mini Gears, ensuring optimal integration within the system.\u003c\/li\u003e\n\u003cli\u003eConstructed from high-strength materials to withstand intense racing conditions.\u003c\/li\u003e\n\u003cli\u003eReduces chain wear by maintaining perfect alignment during high-speed runs.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eImagine shaving seconds off your lap times: this hub's compact design helps distribute power evenly, preventing energy loss that could cost you positions. Whether you're navigating tight corners or accelerating out of chicanes, it provides the stability needed for consistent performance. In the world of sprockets and PMI Mini Gear System, where every component counts, the PM-15M-40 (SKU: PM-15M-40) is your gateway to superior handling and faster finishes. Pair it with matching guards for a complete setup that keeps debris at bay, letting you focus on the race ahead. Kart enthusiasts know that a solid hub like this transforms potential into podium results.\u003c\/p\u003e\u003cp\u003eInstallation is straightforward, requiring minimal tools, so you spend less time in the pits and more on the track. Its lightweight build contributes to overall kart agility, making it a favorite among junior and senior racers alike. Don't overlook the details that drive victory—secure this essential piece and feel the difference in every turn.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is this hub compatible with standard kart sprockets?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e No, the PM-15M-40 is specifically engineered for use with PMI Mini Gears. It is not compatible with standard-sized kart sprockets.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How do I ensure the hub is properly installed on my 40mm axle?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The hub is designed for a snug, precision fit on 40mm axles. Ensure your axle surface is clean and free of debris before sliding the hub into position. Tighten the hardware evenly to maintain perfect alignment and prevent slippage during high-speed runs.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can this hub help with chain wear?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes. By maintaining precise alignment between the sprocket and the drive system, this hub significantly reduces lateral stress on the chain, which helps minimize wear and extends the life of your drive-line components.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does this hub require special tools for installation?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e No, the installation is straightforward and requires only minimal, standard hand tools, allowing for quick adjustments in the pits.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products From Vendor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/pm-15m-50-mini-sprocket-hub-50mm-pm-15m-50\"\u003eRobust 50mm Mini Sprocket Hub for Enhanced Kart Power\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/pm-15m-30-mini-sprocket-hub-30mm-pm-15m-30\"\u003e30mm MINI Sprocket Hub for Precision Kart Applications\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/pm-15m-mini-sprocket-hub-1-250-pm-15m\"\u003e1.250\" MINI Sprocket Hub for Compact Kart Drivetrains\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/pm-77ma-6-75-aluminum-gear-guard-set-fits-40-thru-53-teeth-pm-77ma-6-75\"\u003ePMI Mini Gear System 6.75\" Aluminum Sprocket Guard Set - 40-53 Teeth - All Classes\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/pmi-laser-alignment-system-standard-axle-pm-091200st\"\u003ePMI Laser Alignment System for Standard Axle Karts\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PMI","offers":[{"title":"Default Title","offer_id":52562630705470,"sku":"PM-15M-40","price":44.77,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/pmiminigearsystem-pm-15m-40-mini-sprocket-hub-40mm-pm-15m-40.jpg?v=1763113228"},{"product_id":"pm-77ma-6-75-aluminum-gear-guard-set-fits-40-thru-53-teeth-pm-77ma-6-75","title":"PMI Mini Gear System 6.75\" Aluminum Sprocket Guard Set - 40-53 Teeth - All Classes","description":"\u003cp\u003eProtecting your drive-line is non-negotiable, which is why elite racers rely on premium go kart components like the PMI 6.75\" Aluminum Mini Gear Guard Set to prevent catastrophic chain derailments. Precision-machined from lightweight aluminum, the PM-77MA-6.75 acts as an impenetrable barrier against track debris, rocks, and curbing strikes that can instantly end your race. Designed specifically for the PMI Mini Gear System, this four-piece guard set encases your 40 to 53-tooth sprockets, maintaining a low rotational mass while ensuring your chain stays perfectly aligned under heavy cornering loads and aggressive acceleration.\u003c\/p\u003e\n\u003ch2\u003ePairing the Best Helmets with Elite Drive-Line Upgrades\u003c\/h2\u003e\n\u003cp\u003eWhether you are hunting for a new go kart frame for sale, upgrading your safety gear with the best helmets, or dialing in your current chassis, integrating a robust sprocket guard is critical for maintaining peak power transfer. Debris deflection isn't just about safety; it's about preserving your mechanical advantage. When you run the PMI 6.75\" guard, you eliminate the friction and binding caused by bent sprocket teeth. Racers across the most demanding parts of US circuits trust this exact setup to organize their drive-line, allowing for rapid gear changes without sacrificing structural integrity. The included spacers ensure a precise fit, meaning less time in the pits and more time dominating the apex.\u003c\/p\u003e\n\u003ch2\u003eShop Tires, Clutches, and PMI Gear Guards for Peak Performance\u003c\/h2\u003e\n\u003cp\u003eA winning kart requires synergy between every moving part. As you shop tires to optimize your grip, matching that traction with uninterrupted power delivery is essential. The PMI aluminum guard ensures that the torque generated by your engine reaches the rear axle without hesitation. Its corrosion-resistant finish withstands the harshest trackside elements, from mud to chemical cleaners, ensuring long-lasting durability race after race.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision Aluminum Construction:\u003c\/strong\u003e Delivers maximum impact resistance without adding unnecessary rotational weight to your rear axle.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete Four-Piece Set:\u003c\/strong\u003e Includes guards for both sides of the sprocket hub and pre-installed spacers for rapid gear swaps.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBroad Compatibility:\u003c\/strong\u003e Engineered specifically for 40 to 53-tooth mini gears within the PMI Mini Gear System.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDebris Deflection:\u003c\/strong\u003e Shields your chain and sprocket from rocks, dirt, and aggressive curbing strikes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptimized Power Transfer:\u003c\/strong\u003e Prevents chain derailments and binding, ensuring smooth, uninterrupted torque delivery.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCorrosion Resistant:\u003c\/strong\u003e Withstands harsh track conditions, mud, and chemical degreasers for an extended lifespan.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow Profile 6.75\" Diameter:\u003c\/strong\u003e Provides maximum ground clearance while fully encasing the sprocket assembly.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does this guard set fit all sprocket sizes?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e This specific 6.75\" guard set is engineered for the PMI Mini Gear System and is compatible with sprockets ranging from 40 to 53 teeth.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is the installation process difficult?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Not at all. The set includes pre-installed spacers to ensure a precise fit, allowing for rapid gear swaps and straightforward installation directly onto your sprocket hub.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Why is an aluminum guard better than plastic?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Aluminum provides superior impact resistance against rocks and curbing strikes while maintaining a low rotational mass. It is also corrosion-resistant, ensuring it holds up against trackside elements like mud and chemical cleaners.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Will this guard help prevent chain derailment?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes. By acting as an impenetrable barrier and keeping the chain aligned under heavy cornering loads and acceleration, this guard significantly reduces the risk of catastrophic chain derailments.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products From Vendor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/pm-15m-mini-sprocket-hub-1-250-pm-15m\"\u003e1.250\" MINI Sprocket Hub for Compact Kart Drivetrains\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/pm-15m-50-mini-sprocket-hub-50mm-pm-15m-50\"\u003eRobust 50mm Mini Sprocket Hub for Enhanced Kart Power\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/pm-15m-40-mini-sprocket-hub-40mm-pm-15m-40\"\u003eCompact 40mm Mini Sprocket Hub for Precision Drive\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/pm-15m-30-mini-sprocket-hub-30mm-pm-15m-30\"\u003e30mm MINI Sprocket Hub for Precision Kart Applications\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/50mm-sprocket-hub-black-sc50-bk\"\u003ePMI SC50-BK 50mm Sprocket Hub - Black Anodized Aluminum with 8mm Keyway - European Metric Chassis\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PMI","offers":[{"title":"Default Title","offer_id":52562637029694,"sku":"PM-77MA-6.75","price":42.78,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/pmiminigearsystem-pm-77ma-6-75-aluminum-gear-guard-set-fits-40-thru-53-teeth-pm-77ma-6-75.jpg?v=1763113374"},{"product_id":"pm-77ma-8-aluminum-gear-guard-set-fits-54-thru-64-teeth-pm-77ma-8","title":"Heavy-Duty 8\" Aluminum Gear Guard for 54-64 Tooth Sprockets","description":"\u003cp\u003eBuilt to handle the rigors of high-gear racing, this 8-inch aluminum gear guard set targets sprockets from 54 to 64 teeth, integrating flawlessly into your PMI Mini Gear System. The PM-77MA-8 isn't just protection—it's a performance enhancer that keeps your drive-line humming under pressure.\u003c\/p\u003e\u003cp\u003eWhat sets it apart? Its expanded diameter provides full encirclement for larger sprockets, deflecting hazards that could otherwise cause costly disruptions. On the track, this translates to uninterrupted momentum, allowing you to maintain top speeds longer and outpace competitors who face gear failures.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eHigh-impact resistance: Absorbs shocks from rough terrain.\u003c\/li\u003e\n\u003cli\u003ePrecision engineering: Ensures no interference with chain operation.\u003c\/li\u003e\n\u003cli\u003eWeight-optimized: Adds protection without compromising kart balance.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eRacers often underestimate how a single guard can organize their setup for better efficiency. With the PM-77MA-8 (SKU: PM-77MA-8), you'll notice smoother shifts and reduced vibration, directly contributing to faster lap times. It's ideal for tracks with variable surfaces, where debris is a constant threat. Installation aligns with standard drive-line components, making it accessible for all skill levels. Elevate your kart's defense mechanism and watch how it propels you toward the checkered flag with confidence.\u003c\/p\u003e\u003cp\u003eBeyond the basics, this guard promotes longevity in your sprockets, saving time on repairs and letting you train more. In a sport where preparation meets opportunity, this component ensures you're always ready to go faster.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Will this gear guard fit my specific sprocket size?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The PM-77MA-8 is precision-engineered to fit sprockets ranging from 54 to 64 teeth. Please verify your current sprocket tooth count before installation to ensure full coverage and optimal protection.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is this guard compatible with all kart chassis types?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e This guard is designed to integrate with the PMI Mini Gear System. It is compatible with standard drive-line components, making it a versatile choice for most racing karts, provided your sprocket falls within the 54-64 tooth range.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How does the gear guard improve my kart's performance?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Beyond protecting your drive-line from debris and impact, this guard helps maintain chain stability. By reducing vibration and preventing gear-related disruptions, it allows you to maintain momentum and achieve more consistent lap times.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is the installation process difficult for beginners?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Not at all. The PM-77MA-8 is designed for straightforward installation that aligns with standard drive-line components, making it accessible for racers of all skill levels.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How do I maintain the aluminum gear guard?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Periodically inspect the guard for signs of impact or debris buildup after track sessions. Because it is made from high-impact resistant aluminum, it is durable and requires minimal maintenance—simply keep it clean to ensure it continues to deflect hazards effectively.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products From Vendor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/pm-15m-mini-sprocket-hub-1-250-pm-15m\"\u003e1.250\" MINI Sprocket Hub for Compact Kart Drivetrains\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/pm-77ma-7-50-aluminum-gear-guard-set-fits-40-thru-60-teeth-pm-77ma-7-50\"\u003eVersatile 7.50\" Aluminum Gear Guard for 40-60 Tooth Range\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/pm-77ma-6-75-aluminum-gear-guard-set-fits-40-thru-53-teeth-pm-77ma-6-75\"\u003ePMI Mini Gear System 6.75\" Aluminum Sprocket Guard Set - 40-53 Teeth - All Classes\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/pm-77ma50-6-75-aluminum-gear-guard-set-fits-41-thru-53-teeth-pm-77ma50-6-75\"\u003eSpecialized Aluminum Gear Guard for 50mm Axle 41-53 Teeth\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/pm-92m-mini-sprocket-specify-size-pm-92m\"\u003epm-92m-mini-sprocket-specify-size-pm-92m\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PMI","offers":[{"title":"Default Title","offer_id":52562637062462,"sku":"PM-77MA-8","price":44.77,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/pmiminigearsystem-pm-77ma-8-aluminum-gear-guard-set-fits-54-thru-64-teeth-pm-77ma-8.jpg?v=1763113376"},{"product_id":"pm-15m-30-mini-sprocket-hub-30mm-pm-15m-30","title":"30mm MINI Sprocket Hub for Precision Kart Applications","description":"Metric mastery in a mini package: The PMI 30mm Mini Sprocket Hub delivers exacting tolerances for international kart standards, ensuring your sprocket spins true and transfers power without loss. Tailored for 30mm axles, it's the go-to for setups demanding pinpoint accuracy.\u003cp\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e30mm bore with splined interface for torque grip.\u003c\/li\u003e\n\u003cli\u003eCorrosion-resistant coating for longevity.\u003c\/li\u003e\n\u003cli\u003eLow-profile to maintain chassis geometry.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eIts clean integration keeps assemblies tidy, facilitating quick inspections and adjustments that keep you competitive. Unlock smoother rides and quicker responses with this hub.\u003c\/p\u003e\u003cp\u003eFor global racing series, it's a trusted choice that aligns with speed-focused engineering.\u003c\/p\u003e\u003cp\u003eSKU: PM-15M-30\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is this hub compatible with all 30mm kart axles?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, this hub is precision-engineered for any standard 30mm kart axle. The splined interface ensures a secure, torque-resistant fit for high-performance applications.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does the hub come with the necessary hardware for installation?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The hub is designed for a direct, clean integration. We recommend ensuring your axle keyway is clean and free of debris before sliding the hub into position to maintain the integrity of the splined interface.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How does the low-profile design benefit my kart's performance?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The low-profile geometry helps maintain your chassis's intended setup and balance. By reducing unnecessary bulk, it allows for easier access to the sprocket for quick gear changes and inspections at the track.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How should I maintain the sprocket hub to ensure longevity?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e While the hub features a corrosion-resistant coating, we recommend periodically inspecting the splines for wear and ensuring the mounting bolts are torqued to your chassis manufacturer's specifications to prevent vibration or slippage.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products From Vendor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/pm-15m-50-mini-sprocket-hub-50mm-pm-15m-50\"\u003eRobust 50mm Mini Sprocket Hub for Enhanced Kart Power\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/pm-15m-40-mini-sprocket-hub-40mm-pm-15m-40\"\u003eCompact 40mm Mini Sprocket Hub for Precision Drive\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/pm-15m-mini-sprocket-hub-1-250-pm-15m\"\u003e1.250\" MINI Sprocket Hub for Compact Kart Drivetrains\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/pmi-laser-alignment-system-standard-axle-pm-091200st\"\u003ePMI Laser Alignment System for Standard Axle Karts\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/pm-77ma-6-75-aluminum-gear-guard-set-fits-40-thru-53-teeth-pm-77ma-6-75\"\u003ePMI Mini Gear System 6.75\" Aluminum Sprocket Guard Set - 40-53 Teeth - All Classes\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PMI","offers":[{"title":"Default Title","offer_id":52562639585598,"sku":"PM-15M-30","price":46.76,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/pmiminigearsystem-pm-15m-30-mini-sprocket-hub-30mm-pm-15m-30.jpg?v=1763113425"},{"product_id":"pm-15m-mini-sprocket-hub-1-250-pm-15m","title":"1.250\" MINI Sprocket Hub for Compact Kart Drivetrains","description":"\u003cstrong\u003eCompact power, big results:\u003c\/strong\u003e The PMI Mini Sprocket Hub 1.250\" anchors your sprocket firmly, minimizing slop for crisp, responsive acceleration in tight kart configurations. Sized for mini systems, it's a lightweight essential that keeps weight low while maximizing torque delivery.\u003cul\u003e\n\u003cli\u003eBore precision-machined to 1.250\" for exact fits.\u003c\/li\u003e\n\u003cli\u003eHigh-strength alloy withstands mini-class rigors.\u003c\/li\u003e\n\u003cli\u003eKeyed design prevents rotation under load.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eInstallation is straightforward, aiding organized builds where every gram counts toward faster times. This hub's reliability lets you push harder without driveline worries.\u003c\/p\u003e\u003cp\u003ePerfect for youth or spec classes, it supports setups that prioritize agility and speed.\u003c\/p\u003e\u003cp\u003eSKU: PM-15M\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is this hub compatible with standard 1.25\" axles?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, this hub is precision-machined for a 1.250\" bore, making it the perfect fit for standard 1.25\" kart axles used in many youth and spec classes.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does the hub include the keyway for installation?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e This hub features a keyed design to prevent rotation under load. Please ensure your axle key is in good condition before installation to maintain a secure, slop-free fit.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Why should I choose a mini sprocket hub over a standard size?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The mini sprocket hub is designed for compact drivetrains where weight reduction and space are critical. It helps keep your rotating mass low, which can improve acceleration and responsiveness in tight kart configurations.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How do I ensure the hub is properly aligned?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Proper alignment is essential for chain longevity. We recommend using a laser alignment tool during installation to ensure the sprocket is perfectly parallel to your engine drive gear, reducing friction and wear.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products From Vendor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/pmi-laser-alignment-system-standard-axle-pm-091200st\"\u003ePMI Laser Alignment System for Standard Axle Karts\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/pmi-thin-wall-zinc-32-0-axle-1-25-requires-pm-018ks-32-key-set-pm-18-32ztw\"\u003ePMI Thin Wall Zinc Plated 32-Inch 1.25-Inch Axle for Lightweight Oval Karting\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/pm-15m-30-mini-sprocket-hub-30mm-pm-15m-30\"\u003e30mm MINI Sprocket Hub for Precision Kart Applications\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/pm-15m-40-mini-sprocket-hub-40mm-pm-15m-40\"\u003eCompact 40mm Mini Sprocket Hub for Precision Drive\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/pm-15m-50-mini-sprocket-hub-50mm-pm-15m-50\"\u003eRobust 50mm Mini Sprocket Hub for Enhanced Kart Power\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PMI","offers":[{"title":"Default Title","offer_id":52562642993470,"sku":"PM-15M","price":39.79,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/pmiminigearsystem-pm-15m-mini-sprocket-hub-1-250-pm-15m.jpg?v=1763113500"},{"product_id":"plastic-6-75-mini-gear-guards-gmsg-m675","title":"Affordable 6.75\" Plastic Mini Gear Guards for PMI Hubs","description":"\u003cp\u003eBudget-conscious karting doesn't mean skimping on safety—enter the Plastic 6.75\" Mini Gear Guards, a practical choice for protecting your sprockets in the PMI Mini Gear System. These guards fit PMI and Tuck-n-Run hubs (hardware not included), but steer clear of PRC Excel setups for best results.\u003c\/p\u003e\u003cp\u003eEssential for trackside organization, they encase gears to block mud, stones, and wear-inducing elements, keeping your chain running true. This simple addition can prevent minor issues from escalating, saving time and frustration during events.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eLightweight plastic: Adds protection without weighing down your kart.\u003c\/li\u003e\n\u003cli\u003e6.75-inch size: Suits standard mini sprockets for broad application.\u003c\/li\u003e\n\u003cli\u003eDurable against everyday track abuse: Flexes rather than shatters.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eRacers starting out or maintaining multiple karts love how these guards streamline setups, ensuring everything stays in place for quick gear swaps. The GMSG-M675 (SKU: GMSG-M675) helps you focus on driving by handling the grunt work of debris defense, indirectly aiding faster recovery from off-track excursions.\u003c\/p\u003e\u003cp\u003eInstallation is a snap once you source the hardware, making it ideal for DIY enthusiasts. On race day, a guarded system means fewer vibrations and more predictable power, letting you build confidence in your machine. While not as rugged as metal options, their affordability allows full coverage without breaking the bank.\u003c\/p\u003e\u003cp\u003ePicture a cleaner pit area: These guards make post-race inspections easier, spotting issues early. For junior leagues or practice sessions, they're a smart way to build a resilient drive-line on a dime.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Are the mounting bolts included with these gear guards?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e No, the hardware is not included. These guards are designed for DIY enthusiasts who may already have the necessary mounting hardware or prefer to source their own to match their specific hub setup.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Which hub systems are compatible with these 6.75\" gear guards?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e These guards are specifically designed to fit PMI and Tuck-n-Run hubs. Please note that they are not compatible with PRC Excel setups.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Why should I use a plastic gear guard instead of a metal one?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Plastic gear guards are lightweight, which helps keep your kart's overall weight down. They are also designed to flex rather than shatter upon impact, providing a cost-effective, durable solution for debris defense during practice sessions or junior league racing.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How do I know if the 6.75\" size is right for my kart?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The 6.75-inch size is intended for standard mini sprockets. If you are running larger sprockets, you may require a larger guard to ensure full coverage.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products From Vendor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/plastic-8-0-mini-gear-guards-gmsg-m8\"\u003eTough 8.0\" Plastic Mini Gear Guards for Larger Sprockets\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/sr125-axle-snap-ring-1-1-4-sr125\"\u003e1 1\/4-Inch Axle Snap Ring for Kart Axle Stability\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\u003cli\u003e\u003ca href=\"\/products\/thinkeystock-3-16-x-1-4-thin-keystock-12-length-thinkeystock\"\u003eThin Keystock 3\/16\" x 1\/4\" for Shallow Keyway Kart Axles\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Generic Kart Supplies","offers":[{"title":"Default Title","offer_id":52562657476926,"sku":"GMSG-M675","price":31.07,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/pmiminigearsystem-plastic-6-75-mini-gear-guards-gmsg-m675.jpg?v=1763113793"},{"product_id":"plastic-8-0-mini-gear-guards-gmsg-m8","title":"Tough 8.0\" Plastic Mini Gear Guards for Larger Sprockets","description":"\u003cp\u003eStep up your sprocket safeguarding with the 8.0\" Plastic Mini Gear Guards, tailored for kart owners using PMI or Tuck-n-Run hubs—remember, they're not suited for PRC Excel systems, and hardware comes separate. In the realm of drive-line components, these provide a no-fuss barrier for bigger gears.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eExtended 8-inch diameter: Covers larger sprocket profiles effectively.\u003c\/li\u003e\n\u003cli\u003eImpact-resistant plastic: Handles minor hits without adding bulk.\u003c\/li\u003e\n\u003cli\u003eEasy to clean: Maintains clarity for quick visual checks.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eWhy integrate them into your routine? They prevent debris from gumming up the works, ensuring smooth chain action that keeps your speed steady. This organization translates to less downtime, more laps, and ultimately, sharper competitive edges on the circuit.\u003c\/p\u003e\u003cp\u003eThe GMSG-M8 (SKU: GMSG-M8) is a staple for racers balancing cost and coverage, especially in dusty or gravelly environments where unprotected gears suffer. Mount them to fortify your setup, reducing the shake that can unsettle your steering during high-G turns.\u003c\/p\u003e\u003cp\u003eAffordable and adaptable, these guards let you experiment with gear sizes without heavy investment. Teams report smoother sessions and easier storage, as the plastic resists warping over time. For those building endurance, they're a foundational piece that supports consistent performance without complexity.\u003c\/p\u003e\u003cp\u003eGrab the right bolts, and you're set—simple as that, transforming vulnerable spots into secure zones for relentless racing.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Are these gear guards compatible with all kart hubs?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e These 8.0\" guards are specifically designed for PMI or Tuck-n-Run hubs. Please note that they are not compatible with PRC Excel systems.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does this product include the mounting hardware?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e No, the hardware is sold separately. You will need to source the appropriate bolts to secure the guard to your sprocket setup.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Why should I use a gear guard on my racing kart?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e A gear guard acts as a protective barrier that prevents track debris, such as gravel and dirt, from getting caught in your chain and sprocket. This helps maintain smooth power delivery, reduces wear, and prevents potential mechanical failures during a race.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How do I know if the 8.0\" size is right for my kart?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The 8.0\" diameter is intended for larger sprocket profiles. If you are running a smaller gear setup, you may want to consider a smaller guard to ensure proper fitment and clearance.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products From Vendor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/plastic-6-75-mini-gear-guards-gmsg-m675\"\u003eAffordable 6.75\" Plastic Mini Gear Guards for PMI Hubs\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/sr125-axle-snap-ring-1-1-4-sr125\"\u003e1 1\/4-Inch Axle Snap Ring for Kart Axle Stability\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\u003cli\u003e\u003ca href=\"\/products\/thinkeystock-3-16-x-1-4-thin-keystock-12-length-thinkeystock\"\u003eThin Keystock 3\/16\" x 1\/4\" for Shallow Keyway Kart Axles\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Generic Kart Supplies","offers":[{"title":"Default Title","offer_id":52562657542462,"sku":"GMSG-M8","price":31.07,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/pmiminigearsystem-plastic-8-0-mini-gear-guards-gmsg-m8.jpg?v=1763113794"},{"product_id":"pm-15m-50-mini-sprocket-hub-50mm-pm-15m-50","title":"Robust 50mm Mini Sprocket Hub for Enhanced Kart Power","description":"\u003cp\u003ePrecision meets power in the PM-15M-50 Mini Sprocket Hub, a 50mm powerhouse designed exclusively for PMI Mini Gears. As a core drive-line component, it anchors your sprocket system, ensuring every ounce of engine force reaches the wheels without compromise.\u003c\/p\u003e\u003cp\u003eDelve into its advantages: The larger 50mm diameter provides enhanced stability for bigger axles, ideal for karts pushing higher loads. This means less flex under acceleration, translating to straighter lines and faster exits from corners. Racers appreciate how it organizes the rear setup, making chain adjustments a breeze during frantic pit stops.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eHigh-tensile construction: Endures the torque of intense races.\u003c\/li\u003e\n\u003cli\u003eAnti-vibration features: Smooths out bumps for consistent power delivery.\u003c\/li\u003e\n\u003cli\u003eUniversal PMI compatibility: Fits seamlessly into existing Mini Gear systems.\u003c\/li\u003e\n\u003cli\u003eEasy servicing: Allows quick inspections without full disassembly.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003ePicture this: You're battling for position, and your hub holds firm, preventing the wobbles that plague lesser parts. The PM-15M-50 (SKU: PM-15M-50) empowers you to go harder, longer, by minimizing energy waste. In sprockets and drive-line categories, it's a go-to for those serious about lap records.\u003c\/p\u003e\u003cp\u003eBeyond basics, its design promotes better heat dissipation, keeping components cool during endurance events. Whether you're a seasoned driver or building your first competitive kart, this hub elevates performance metrics. Pair it with appropriate guards to create a bulletproof rear end that withstands track abuse.\u003c\/p\u003e\u003cp\u003eUsers highlight its role in fine-tuning gear ratios, allowing custom setups for specific tracks. Invest in this hub, and you'll find your kart responding more eagerly, turning practice laps into personal bests. It's not just a part—it's the foundation for racing dominance.\u003c\/p\u003e\u003cp\u003eWith straightforward mounting hardware, setup time is cut down, getting you back to what you love: the thrill of speed.\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 The PM-15M-50 is specifically engineered for 50mm diameter axles. Please ensure your kart chassis utilizes a 50mm rear axle before installation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does this hub require specific sprocket types?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, this hub is designed exclusively for use with PMI Mini Gear systems to ensure a perfect fit and optimal power transfer.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How does the 50mm diameter improve my kart's performance?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The larger 50mm diameter provides increased surface area and stability, which reduces axle flex during high-load cornering and acceleration, leading to more consistent power delivery to the rear wheels.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I perform maintenance on the chain without removing the hub?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The PM-15M-50 is designed for easy servicing, allowing for quick inspections and chain adjustments without requiring a full disassembly of the rear drive-line.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What should I pair this with for a complete rear-end setup?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e For maximum durability and protection against track debris, we recommend pairing this hub with a compatible aluminum gear guard.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products From Vendor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/pm-77ma50-6-75-aluminum-gear-guard-set-fits-41-thru-53-teeth-pm-77ma50-6-75\"\u003eSpecialized Aluminum Gear Guard for 50mm Axle 41-53 Teeth\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/50mm-sprocket-hub-black-sc50-bk\"\u003ePMI SC50-BK 50mm Sprocket Hub - Black Anodized Aluminum with 8mm Keyway - European Metric Chassis\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/50mm-axle-lock-collar-wide-black-discontinued-limited-supply-lc50b-wide\"\u003ePMI Wide Split 50mm Axle Lock Collar - Black Anodized 8mm Keyslot - Universal Karting\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/pm-77ma-6-75-aluminum-gear-guard-set-fits-40-thru-53-teeth-pm-77ma-6-75\"\u003ePMI Mini Gear System 6.75\" Aluminum Sprocket Guard Set - 40-53 Teeth - All Classes\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/pm-92m-mini-sprocket-specify-size-pm-92m\"\u003epm-92m-mini-sprocket-specify-size-pm-92m\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PMI","offers":[{"title":"Default Title","offer_id":52562660917566,"sku":"PM-15M-50","price":66.24,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/pmiminigearsystem-pm-15m-50-mini-sprocket-hub-50mm-pm-15m-50.jpg?v=1763113886"},{"product_id":"pm-77ma-7-50-aluminum-gear-guard-set-fits-40-thru-60-teeth-pm-77ma-7-50","title":"Versatile 7.50\" Aluminum Gear Guard for 40-60 Tooth Range","description":"\u003cul\u003e\n\u003cli\u003eExpansive fit: Covers sprockets from 40 to 60 teeth for broad compatibility.\u003c\/li\u003e\n\u003cli\u003eAluminum alloy build: Lightweight yet tough enough for demanding tracks.\u003c\/li\u003e\n\u003cli\u003eEasy-mount design: Secures firmly to existing hubs without modifications.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eTrack conditions can be unforgiving, but the PM-77MA-7.50 Aluminum Gear Guard Set changes the game by encasing your sprockets in a protective shell. At 7.50 inches, it offers extended coverage for larger gear setups, preventing chain derailments that slow you down and sideline your kart.\u003c\/p\u003e\u003cp\u003eConsider the impact on your racing strategy: With this guard in place, you can confidently tackle bumpy straights or debris-strewn corners, knowing your drive-line is safeguarded. It reduces friction points, allowing smoother rotation and potentially quicker acceleration out of turns. In the PMI Mini Gear System category, this piece excels by combining form and function, keeping your setup organized and race-ready.\u003c\/p\u003e\u003cp\u003eThe beauty lies in its simplicity—install it once and forget the worries of wear and tear. Kart teams using similar guards often see a drop in maintenance costs and an uptick in lap consistency. For the PM-77MA-7.50 (SKU: PM-77MA-7.50), think of it as insurance for your speed: It lets you focus on technique while handling the mechanical defense. Whether upgrading from plastic alternatives or starting fresh, this guard elevates your kart's resilience, ensuring every session ends with you ahead.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Will this gear guard fit my specific sprocket size?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e This 7.50\" guard is designed for versatility and is compatible with sprockets ranging from 40 to 60 teeth. Please ensure your sprocket falls within this range for proper coverage.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is any modification required for installation?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e No. The guard features an easy-mount design that secures directly to your existing hub without the need for drilling or permanent modifications to your kart.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Why should I choose an aluminum guard over a plastic one?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Aluminum alloy provides superior durability and impact resistance on demanding tracks. It offers a more rigid protective shell that helps prevent chain derailments and reduces friction, leading to better lap consistency.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does this guard help with kart maintenance?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes. By shielding the drive-line from track debris and preventing chain issues, this guard helps reduce wear and tear on your sprocket and chain, ultimately lowering long-term maintenance costs.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products From Vendor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/pm-15m-50-mini-sprocket-hub-50mm-pm-15m-50\"\u003eRobust 50mm Mini Sprocket Hub for Enhanced Kart Power\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/pm-15m-40-mini-sprocket-hub-40mm-pm-15m-40\"\u003eCompact 40mm Mini Sprocket Hub for Precision Drive\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/pm-15m-mini-sprocket-hub-1-250-pm-15m\"\u003e1.250\" MINI Sprocket Hub for Compact Kart Drivetrains\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/pm-77ma-8-aluminum-gear-guard-set-fits-54-thru-64-teeth-pm-77ma-8\"\u003eHeavy-Duty 8\" Aluminum Gear Guard for 54-64 Tooth Sprockets\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/pm-77ma-6-75-aluminum-gear-guard-set-fits-40-thru-53-teeth-pm-77ma-6-75\"\u003ePMI Mini Gear System 6.75\" Aluminum Sprocket Guard Set - 40-53 Teeth - All Classes\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PMI","offers":[{"title":"Default Title","offer_id":52562662293822,"sku":"PM-77MA-7.50","price":46.13,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/pmiminigearsystem-pm-77ma-7-50-aluminum-gear-guard-set-fits-40-thru-60-teeth-pm-77ma-7-50.jpg?v=1763113924"},{"product_id":"pm-77ma50-6-75-aluminum-gear-guard-set-fits-41-thru-53-teeth-pm-77ma50-6-75","title":"Specialized Aluminum Gear Guard for 50mm Axle 41-53 Teeth","description":"\u003cp\u003eAddressing the needs of advanced kart setups, the PM-77MA50-6.75 Aluminum Gear Guard Set is engineered for 50mm axles and sprockets from 41 to 53 teeth—note it won't pair with 40-tooth variants. This specialized piece from the PMI Mini Gear System delivers targeted shielding for your drive-line.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eOptimized for PM-15M-50 hubs: Ensures perfect alignment on larger axles.\u003c\/li\u003e\n\u003cli\u003eAluminum durability: Withstands impacts while keeping weight low.\u003c\/li\u003e\n\u003cli\u003ePrecise tooth range: Covers common mid-size sprockets for versatile use.\u003c\/li\u003e\n\u003cli\u003eStreamlined profile: Prevents drag, aiding in high-speed stability.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eHow does it help you win? By securing your gears against track grit and accidental strikes, it preserves chain integrity, leading to fewer interruptions and more fluid power transfer. This guard organizes your rear assembly neatly, making pre-race checks efficient and stress-free.\u003c\/p\u003e\u003cp\u003eIn the heat of competition, reliability is key, and the PM-77MA50-6.75 (SKU: PM-77MA50-6.75) shines by reducing vibration that could throw off your line. Kart builders praise its compatibility, noting how it slots into 50mm systems without adapters. For tracks demanding quick gear changes, this setup keeps everything tight and responsive.\u003c\/p\u003e\u003cp\u003eExplore further: Its corrosion-resistant coating handles wet conditions, ensuring longevity across seasons. Racers find that protected gears shift crisper, contributing to better throttle control and faster overall times. Avoid the pitfalls of mismatched parts—this guard is your assurance of a cohesive, high-performing drive-line.\u003c\/p\u003e\u003cp\u003eSimple to attach with basic tools, it minimizes setup time, letting you prioritize strategy over mechanics. Whether fine-tuning for oval or road courses, this component empowers bolder driving, turning close races into decisive leads.\u003c\/p\u003e\u003cp\u003eUltimately, it's about building a kart that performs when it counts, and this guard is a critical step toward that goal.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is this gear guard compatible with all sprocket sizes?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e This specific model is designed for sprockets ranging from 41 to 53 teeth. It is not compatible with 40-tooth sprockets or those larger than 53 teeth.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does this guard require special adapters for 50mm axles?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e No, this guard is engineered specifically for 50mm axles and is optimized for use with the PM-15M-50 hub, allowing for a direct, adapter-free installation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How does the gear guard improve my kart's performance?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e By shielding the drive-line from track debris and accidental strikes, it protects chain integrity and reduces vibration. This leads to more fluid power transfer and more consistent throttle control during races.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is the installation process difficult?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Not at all. The guard is designed for a straightforward installation using basic tools, allowing you to secure your rear assembly quickly during pre-race checks.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Will the material hold up in wet racing conditions?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, the guard features a corrosion-resistant coating specifically intended to maintain durability and performance even when racing in wet or damp conditions.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products From Vendor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/pm-15m-50-mini-sprocket-hub-50mm-pm-15m-50\"\u003eRobust 50mm Mini Sprocket Hub for Enhanced Kart Power\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/50mm-sprocket-hub-black-sc50-bk\"\u003ePMI SC50-BK 50mm Sprocket Hub - Black Anodized Aluminum with 8mm Keyway - European Metric Chassis\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/pm-77ma-7-50-aluminum-gear-guard-set-fits-40-thru-60-teeth-pm-77ma-7-50\"\u003eVersatile 7.50\" Aluminum Gear Guard for 40-60 Tooth Range\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/pm-77ma-8-aluminum-gear-guard-set-fits-54-thru-64-teeth-pm-77ma-8\"\u003eHeavy-Duty 8\" Aluminum Gear Guard for 54-64 Tooth Sprockets\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/50mm-axle-lock-collar-wide-black-discontinued-limited-supply-lc50b-wide\"\u003ePMI Wide Split 50mm Axle Lock Collar - Black Anodized 8mm Keyslot - Universal Karting\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PMI","offers":[{"title":"Default Title","offer_id":52562662424894,"sku":"PM-77MA50-6.75","price":68.67,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/pmiminigearsystem-pm-77ma50-6-75-aluminum-gear-guard-set-fits-41-thru-53-teeth-pm-77ma50-6-75.jpg?v=1763113926"},{"product_id":"pm-77ma50-8-0-aluminum-gear-guard-set-fits-54-thru-64-teeth-pm-77ma50-8","title":"PMC PM-77MA50-8 8-Inch Aluminum Mini Gear Guard - 50mm Axle \/ 54-64T","description":"\u003cp\u003eDialing in your drivetrain with new parts requires precision, and the PMC PM-77MA50-8 8-Inch Aluminum Mini Gear Guard delivers bulletproof protection for 50mm axle setups running 54-64 tooth sprockets. Designed specifically for the PMC Mini Gear System, this guard acts as the ultimate defense against curb strikes, track debris, and chain derailment. When you are pushing the limits on the track, the last thing you need is a bent sprocket ending your weekend early. This 8-inch aluminum shield absorbs the abuse, keeping your drive-line perfectly aligned and your chain engagement flawless.\u003c\/p\u003e\u003ch2\u003eEngineered for Maximum Drivetrain Reliability\u003c\/h2\u003e\u003cp\u003eEvery ounce matters in competitive karting, but so does finishing the race. This guard strikes the perfect balance, utilizing aerospace-grade aluminum to provide immense structural integrity without adding unnecessary rotating mass. Whether you are swapping out a go kart fuel tank, tuning a walbro carb, or investing in good helmets for driver safety, protecting your drivetrain should be equally high on your priority list. The PM-77MA50-8 ensures that your gear ratio experiments aren't ruined by a single off-track excursion.\u003c\/p\u003e\u003ch2\u003eSeamless Integration with the PMC Mini Gear System\u003c\/h2\u003e\u003cp\u003eMounting is straightforward and secure, specifically engineered to mate with the PM-15M-50 hub. The black anodized finish not only looks factory-fresh but also resists harsh track grime and chain lube buildup, making post-race teardowns significantly faster. If you are already planning a go kart steering wheel upgrade to improve your handling feedback, pairing it with a stabilized, protected rear axle ensures that your inputs translate directly into forward momentum.\u003c\/p\u003e\u003ch2\u003eKey Technical Specifications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eExact Fitment:\u003c\/strong\u003e Exclusively designed for 50mm axles using the PM-15M-50 hub.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSprocket Capacity:\u003c\/strong\u003e Provides full 8-inch coverage for larger 54-64 tooth mini gears.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAerospace Aluminum:\u003c\/strong\u003e Delivers high-impact deflection while minimizing rotational weight.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDebris Deflection:\u003c\/strong\u003e Prevents chain derailment by blocking track debris and curbing impacts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAnodized Finish:\u003c\/strong\u003e Repels grease and grime for rapid cleaning and long-lasting corrosion resistance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRapid Installation:\u003c\/strong\u003e Integrates seamlessly into the PMC Mini Gear System for quick ratio changes in the pits.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PMC","offers":[{"title":"Default Title","offer_id":52562662457662,"sku":"PM-77MA50-8","price":71.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/pmiminigearsystem-pm-77ma50-8-0-aluminum-gear-guard-set-fits-54-thru-64-teeth-pm-77ma50-8.jpg?v=1763113927"},{"product_id":"pm-77mc-6-75-carbon-fiber-gear-guard-set-fits-40-thru-53-teeth-pm-77mc-6-75","title":"Performance Manufacturing Inc. PM-77MC-6.75 Carbon Fiber Mini Gear Guard - 6.75\" (40-53T) - Universal Karting","description":"\u003cp\u003eShield your 40 to 53-tooth sprockets from track debris and chain derailments with the PMI PM-77MC-6.75 Carbon Fiber Mini Gear Guard Set, a mandatory drive-line defense system for your go kart. Engineered for high-RPM racing, this 6.75-inch guard delivers maximum impact absorption while minimizing rotational mass. Built from aerospace-grade carbon fiber, it ensures your engine's power translates directly into forward momentum rather than overcoming heavy, clunky drive-line components.\u003c\/p\u003e\u003ch2\u003eIntegrating with the Parts of a Wheel Hub Assembly\u003c\/h2\u003e\u003cp\u003eA reliable drive-line is only as strong as its weakest link. This carbon fiber guard bolts seamlessly to your PMI mini gear hubs, complementing the critical parts of a wheel hub assembly. By maintaining a clean, debris-free sprocket area, you reduce the risk of chain bind and premature wear on your bearings and axle components. Whether you are running a high-output engine with a tuned walbro carburetor or a standard spec motor, keeping your rotational weight low and your chain tension optimal is the key to finishing endurance races without a mechanical DNF. The precision engineering of this guard ensures that your chain remains perfectly aligned, reducing friction and maximizing top-end speed on the straights.\u003c\/p\u003e\u003ch2\u003eEngineered for Durability Alongside Top Tire Brands\u003c\/h2\u003e\u003cp\u003eJust as you rely on top tire brands to keep your chassis glued to the asphalt, you need a gear guard that withstands the brutal realities of competitive racing. Carbon fiber flexes under stress without cracking, meaning a harsh ride over the rumble strips will not leave your sprocket exposed. This comprehensive 4-piece set includes guards for both sides of the sprocket hub, complete with pre-installed spacers for rapid gear changes in the pits. When fractions of a second dictate the podium, having reliable, lightweight protection gives you the ultimate competitive edge.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAerospace-Grade Carbon Fiber:\u003c\/strong\u003e Delivers superior impact absorption and flexes under extreme stress without shattering.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltra-Low Rotational Mass:\u003c\/strong\u003e Shaves critical grams off your drive-line for faster acceleration and sharper throttle response.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete 4-Piece Set:\u003c\/strong\u003e Includes inner and outer guards with pre-installed spacers for rapid, hassle-free gear changes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision Fitment:\u003c\/strong\u003e Specifically designed for 6.75-inch profiles, perfectly shielding 40 to 53-tooth mini gears.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeather \u0026amp; Debris Resistance:\u003c\/strong\u003e Stands up to rain, dust, UV exposure, and flying track debris during intense pack racing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUniversal Hub Compatibility:\u003c\/strong\u003e Bolts directly to PMI 4-hole mini hubs, integrating flawlessly with your existing setup.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnhanced Chain Retention:\u003c\/strong\u003e Keeps your chain aligned and protected, reducing the risk of costly derailments.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eDo not let a stray rock or a harsh curb strike end your weekend early. By upgrading to the PMI Carbon Fiber Gear Guard, you are investing in the reliability and durability required to run at the front of the pack. Focus on hitting your apexes and let your equipment handle the abuse.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Will this gear guard fit my sprocket size?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e This 6.75-inch guard is specifically engineered to fit mini gears ranging from 40 to 53 teeth. Please verify your sprocket tooth count before installation to ensure proper coverage.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does this set include everything needed for installation?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, this is a complete 4-piece set. It includes both inner and outer guards and comes with pre-installed spacers to facilitate rapid gear changes in the pits.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is this guard compatible with all kart hubs?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e This guard is designed for universal karting applications and bolts directly to standard PMI 4-hole mini gear hubs.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Why should I choose carbon fiber over aluminum guards?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Carbon fiber offers a superior strength-to-weight ratio. It provides excellent impact absorption and flexes under stress without cracking or shattering, all while significantly reducing rotational mass compared to heavier metal alternatives.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How does a gear guard help with kart performance?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Beyond protecting your chain from debris and derailments, this guard helps maintain optimal chain alignment. By reducing friction and lowering rotational weight, it allows your engine to transfer power to the track more efficiently, improving acceleration and top-end speed.\u003c\/p\u003e","brand":"Performance Manufacturing Inc.","offers":[{"title":"Default Title","offer_id":52562662490430,"sku":"PM-77MC-6.75","price":121.97,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/pmiminigearsystem-pm-77mc-6-75-carbon-fiber-gear-guard-set-fits-40-thru-53-teeth-pm-77mc-6-75.jpg?v=1763113928"},{"product_id":"pm-92m-mini-sprocket-specify-size-new-smaller-sizes-pm-92m","title":"PM-92M Mini Sprocket - Interlocking Split Design with New Smaller Sizes","description":"\u003cp\u003eDiscover the PM-92M Series Mini Sprockets in the #35 40T variant, engineered for superior performance in kart racing applications. This innovative product features an interlocking two-piece split design, allowing for effortless installation and maintenance without the need for specialized tools. Specifically designed to fit PM-15M series hubs, this 40-tooth #35 sprocket ensures a secure and precise connection in your kart's drive-line system.\u003c\/p\u003e\u003cp\u003eCrafted from high-quality materials, the PM-92M #35 40T mini sprocket is built to withstand the rigors of intense racing conditions. The split construction not only simplifies assembly but also provides flexibility in gearing adjustments, making it a favorite among professional kart racers and enthusiasts alike. The 40-tooth configuration offers balanced acceleration and top speed, ideal for tracks with varied layouts.\u003c\/p\u003e\u003cp\u003ePart of the PMI Mini Gear System, the PM-92M series introduces new smaller sizes to accommodate a wider range of kart configurations. This #35 40T option delivers reliable power transmission, optimizing efficiency for quick starts and consistent performance. From tight corners to high-speed straights, it helps fine-tune your kart's gearing for competitive edge.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eInterlocking two-piece split design for easy installation\u003c\/li\u003e\n\u003cli\u003eExclusive fit for PM-15M series hubs\u003c\/li\u003e\n\u003cli\u003eHigh-durability construction for racing demands\u003c\/li\u003e\n\u003cli\u003eNew smaller sizes for enhanced gearing options\u003c\/li\u003e\n\u003cli\u003e#35 chain compatible with 40 teeth for balanced performance\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eElevate your kart racing experience with the PM-92M Mini Sprocket #35 40T. Ideal for drive-line components in competitive setups, it combines precision engineering with practical design to keep you ahead of the pack. Stock up on this essential sprocket and maintain peak performance on the track.\u003c\/p\u003e","brand":"PMI","offers":[{"title":"#35 40T","offer_id":52569002017086,"sku":"PM-92M-**#35 40T","price":32.4,"currency_code":"USD","in_stock":true},{"title":"#35 41T","offer_id":52569002049854,"sku":"PM-92M-**#35 41T","price":32.4,"currency_code":"USD","in_stock":true},{"title":"#35 42T","offer_id":52569002082622,"sku":"PM-92M-**#35 42T","price":32.4,"currency_code":"USD","in_stock":true},{"title":"#35 43T","offer_id":52569002115390,"sku":"PM-92M-**#35 43T","price":32.4,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/pmiminigearsystem-pm-92m-mini-sprocket-specify-size-new-smaller-sizes-pm-92m.jpg?v=1763125251"},{"product_id":"pm-92m-mini-sprocket-specify-size-pm-92m","title":"PM-92M Mini Sprocket for Kart Racing - Interlocking Split Design, Specify Size","description":"\u003cp\u003eDiscover the PM-92M Series Mini Sprocket in #35 53T size, engineered for superior performance in kart racing. This high-quality sprocket features an innovative interlocking two-piece split design, allowing for effortless installation and maintenance without the need for specialized tools. Specifically crafted to fit the PM-15M series hub, it ensures a secure and precise connection in your kart's drive-line system.\u003c\/p\u003e\u003cp\u003eBuilt from durable materials, the #35 53T PM-92M Mini Sprocket is designed to withstand the rigors of intense racing conditions, providing reliable power transfer and reduced wear on your #35 chain. Whether you're competing on dirt tracks, asphalt circuits, or indoor venues, this 53-tooth configuration delivers consistent gearing for optimal acceleration and speed control.\u003c\/p\u003e\u003cp\u003eThe split design not only simplifies sprocket replacement but also minimizes downtime during pit stops, keeping you ahead of the competition. Compatible exclusively with the PMI Mini Gear System, it integrates seamlessly into your setup, enhancing overall drivetrain efficiency.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eInterlocking two-piece construction for easy assembly\u003c\/li\u003e\n\u003cli\u003eFits PM-15M series hubs only\u003c\/li\u003e\n\u003cli\u003e#35 chain compatible with 53 teeth for balanced performance\u003c\/li\u003e\n\u003cli\u003ePrecision-engineered for kart racing durability\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eElevate your kart's performance with this #35 53T sprocket, an essential drive-line component. Perfect for both amateur and professional racers looking to fine-tune their gearing ratio for maximum horsepower utilization.\u003c\/p\u003e\u003cp\u003eIn the world of karting, every component counts. The PM-92M #35 53T Mini Sprocket offers the reliability and precision you demand, ensuring your machine performs at its peak. 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