{"title":"Wheel Hub Bearings","description":"\u003cp\u003eWheel hub bearings are sealed rolling-element bearings fitted in a kart wheel hub so the hub can rotate on the axle or stub with low friction. They are specified by inner diameter (common kart sizes include 17 mm, 5\/8 in, 3\/4 in, and 25 mm), outer diameter, and width to match the hub bore.\u003c\/p\u003e","products":[{"product_id":"dsm58brg-wheel-bearing-with-5-8-id-and-35mm-od-dsm58brg","title":"Metric Wheel Bearing for 5\/8\" Spindles - 5\/8\" ID x 35mm OD Adaptation","description":"\u003cp\u003eImagine converting your Euro-style kart to American spindles without the hassle of custom machining—this bearing makes it possible. The DSM58BRG features a 5\/8\" inner diameter paired with a 35mm outer diameter (about 1.378\"), offering a near-perfect match for standard U.S. 5\/8\" bearings at just 0.003\" wider.\u003c\/p\u003e\u003cp\u003eAs the go-to choice for DWT 5\/8\" DSM wheels, it excels in metric front hubs, allowing seamless adaptation to 5\/8\" spindles. Racers also rely on it to revive hubs with eroded bearing seats, restoring factory-level precision.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eVersatile for \u003cem\u003eEuro Kart\u003c\/em\u003e and kingpin applications, plus Tru-Speed magnesium wheel integrations.\u003c\/li\u003e\n\u003cli\u003eEnhances track performance by minimizing play and ensuring true wheel alignment for better grip and faster straightaways.\u003c\/li\u003e\n\u003cli\u003eBuilt tough to withstand high-speed stresses, cutting down on unexpected failures during races.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eEquip your setup with this bearing to unlock smoother rides and optimized handling—essential for anyone pushing limits in kart competitions. SKU: DSM58BRG.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Why does this bearing have a 35mm outer diameter if it is for a 5\/8\" spindle?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e This bearing is specifically designed as an adapter. It allows you to fit a standard 5\/8\" spindle into a metric hub that requires a 35mm outer diameter, saving you from needing custom machining to convert your kart's front end.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I use this bearing to fix a worn-out hub?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes. Because the 35mm outer diameter is slightly larger than some standard metric bearings, many racers use this to restore precision to hubs where the bearing seat has become eroded or loose over time.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is this bearing compatible with DWT wheels?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Absolutely. This is the go-to bearing for DWT 5\/8\" DSM wheels and is also frequently used for Tru-Speed magnesium wheel integrations.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How do I know if this bearing will fit my specific kart?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e This bearing is designed for setups using 5\/8\" spindles and hubs requiring a 35mm outer diameter. If your current hub is designed for a standard 17mm metric bearing, you may need to check our 17mm options instead.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Should I grease these bearings before installation?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e While these bearings come pre-lubricated for high-speed racing, it is standard practice to inspect them and ensure they are clean and properly seated during installation to minimize play and ensure true wheel alignment.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products From Vendor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/17mmb-17mm-hub-bearing-17mmb\"\u003ePrecision 17mm Hub Bearing for European Karts and DWT Wheels\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"DWT","offers":[{"title":"Default Title","offer_id":52562261377342,"sku":"DSM58BRG","price":5.93,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/wheelhubbearings-dsm58brg-wheel-bearing-with-5-8-id-and-35mm-od-dsm58brg_44b250b2-8b8c-47b2-b7fc-2f5acc8aafae.jpg?v=1763116181"},{"product_id":"km307-wheel-hub-bearing-25mm-id-with-37mm-od-km307","title":"Target Distributing KM307 Front Wheel Hub Bearing - 25mm ID x 37mm OD - Euro Kart Metric","description":"\u003cp\u003eWhen you are sourcing the most reliable kart parts online, the Target Distributing KM307 Front Wheel Hub Bearing stands out as a critical upgrade for Euro metric chassis systems. Engineered for precision and minimal rolling resistance, this 25mm ID by 37mm OD bearing directly impacts your top-end speed and cornering momentum. In competitive racing, parasitic drag is the enemy of lap times. By utilizing a high-grade hybrid sealed bearing race, the KM307 ensures that rotational friction is drastically reduced, allowing your kart to carry maximum velocity through tight apexes and long straights alike.\u003c\/p\u003e\u003ch2\u003eBeyond the Go Kart Brake Kit: Why Bearing Efficiency Matters\u003c\/h2\u003e\u003cp\u003eMany racers spend hours bleeding their go kart brake kit or dialing in tire pressures, completely overlooking the immense performance gains hidden within their wheel hubs. A seized or worn bearing forces your engine to work harder, scrubbing off crucial RPMs. The KM307 bearing is packed with high-performance grease designed to withstand the extreme lateral loads and high-speed stresses of competitive sprint karting. Its 7mm thickness and precise 25mm inner diameter provide a flawless fit on standard metric spindles, ensuring your wheels spin freely without lateral play or vibration.\u003c\/p\u003e\u003ch2\u003ePairing Your Setup: From Go Kart Helmets to Engine Bike Parts\u003c\/h2\u003e\u003cp\u003eBuilding a podium-worthy machine requires attention to every detail, whether you are upgrading your safety gear with the latest go kart helmets or adapting high-RPM engine bike parts for a custom shifter build. The KM307 wheel bearing integrates seamlessly into this high-performance ecosystem. It is specifically manufactured to endure the harsh, high-vibration environments of both 2-cycle and 4-cycle racing classes. By maintaining optimal wheel alignment and reducing hub temperatures during extended practice sessions, this bearing prevents premature wear and costly DNF scenarios.\u003c\/p\u003e\u003cp\u003eMaximize your chassis potential with these critical KM307 bearing features:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eExact Metric Tolerances:\u003c\/strong\u003e 25mm inner diameter and 37mm outer diameter for a perfect, slop-free fit on Euro kart spindles.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUltra-Low Friction Race:\u003c\/strong\u003e Precision-machined internal races drastically cut rolling resistance for higher straightaway speeds.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSealed Contaminant Protection:\u003c\/strong\u003e Integrated shields block track debris, rubber dust, and moisture from destroying the internal ball bearings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Load Capacity:\u003c\/strong\u003e Engineered to absorb severe lateral G-forces without deflecting or binding during aggressive cornering.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThermal Stability:\u003c\/strong\u003e Premium synthetic grease packing prevents overheating and bearing failure during long endurance stints.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUniversal Metric Compatibility:\u003c\/strong\u003e Directly replaces standard 25mm x 37mm x 7mm bearings in major Italian and European kart hubs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVibration Dampening:\u003c\/strong\u003e Tight manufacturing tolerances eliminate wheel chatter, providing smoother steering feedback to the driver.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eStop losing fractions of a second to unseen mechanical drag. Equip your front hubs with the KM307 bearing and experience the frictionless rotation required to dominate your local circuit.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How do I know if the KM307 bearing is compatible with my kart?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The KM307 is a standard Euro metric bearing. You should measure your front spindle diameter and your wheel hub bore. If your spindle is 25mm and your hub bore is 37mm, this bearing will provide a precise, slop-free fit.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Should I grease these bearings before installation?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The KM307 comes pre-packed with high-performance synthetic grease designed for high-speed racing. You do not need to add more grease upon installation, but you should ensure your spindle is clean and free of debris before sliding the hub on.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How often should I replace my front wheel bearings?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Bearing life depends on track conditions and maintenance. We recommend checking for lateral play or \"grittiness\" during every race weekend. If you notice any vibration or if the wheel does not spin freely, it is time to replace them to avoid mechanical drag.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I use these bearings for both 2-cycle and 4-cycle karts?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, the KM307 is engineered to handle the high-vibration environments of both 2-cycle and 4-cycle racing classes, making it a versatile choice for most sprint karting setups.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the best way to remove old bearings from a hub?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Use a proper bearing puller or a soft-faced mallet and a punch to tap the bearing out evenly from the opposite side. Avoid using excessive force directly on the inner race to prevent damaging the hub housing.\u003c\/p\u003e","brand":"Target Distributing","offers":[{"title":"Default Title","offer_id":52562261606718,"sku":"KM307","price":4.93,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/wheelhubbearings-km307-wheel-hub-bearing-25mm-id-with-37mm-od-km307_da2074da-70eb-4847-872a-7bf00359b2d8.jpg?v=1763116330"},{"product_id":"17mmb-17mm-hub-bearing-17mmb","title":"Precision 17mm Hub Bearing for European Karts and DWT Wheels","description":"\u003cp\u003eEngineered for seamless integration, this 17mm hub bearing delivers the smooth operation needed to push your kart's limits on every straightaway and corner.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eInner Diameter:\u003c\/strong\u003e 17mm (0.669\") for precise fit in metric hubs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOuter Diameter:\u003c\/strong\u003e 35mm (1.378\") to match European standards\u003c\/li\u003e\n\u003cli\u003eVersatile compatibility with most Euro kart hubs, all DWT DSM wheels, and Margay Ignite chassis setups\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eBy minimizing rotational drag, it enhances wheel spin efficiency, allowing faster starts and sustained speeds that give you the edge in tight races. Perfect for oval or sprint tracks, this bearing (SKU: 17MMB) keeps your axles turning flawlessly, reducing wear and boosting overall performance without compromising on durability.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How do I know if this 17mm bearing is the right size for my kart?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e This bearing features a 17mm inner diameter and a 35mm outer diameter. It is designed specifically for European-standard metric hubs. Please measure your spindle or axle diameter to ensure it matches the 17mm specification before installation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is this bearing compatible with my Margay Ignite kart?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, this bearing is fully compatible with Margay Ignite chassis setups, as well as most standard European kart hubs and all DWT DSM wheels.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Should I use grease when installing these bearings?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e While these bearings come ready for use, applying a light, high-quality synthetic karting grease can help displace moisture and improve longevity, especially if you race in damp conditions or on dirt tracks.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How often should I replace my wheel bearings?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e You should inspect your bearings before every race weekend. If you notice any \"grittiness,\" lateral play (wobble), or if the wheel does not spin freely, it is time to replace them to maintain peak performance and safety.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I use this bearing on a 5\/8\" spindle?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e No, this bearing is designed for a 17mm spindle. If you are running a 5\/8\" spindle, you will need a different bearing size to ensure a proper, safe fit.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products From Vendor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/dsm58brg-wheel-bearing-with-5-8-id-and-35mm-od-dsm58brg\"\u003eMetric Wheel Bearing for 5\/8\" Spindles - 5\/8\" ID x 35mm OD Adaptation\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"DWT","offers":[{"title":"Default Title","offer_id":52562262098238,"sku":"17MMB","price":2.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/wheelhubbearings-17mmb-17mm-hub-bearing-17mmb_ee20e1de-55e9-4e18-ac92-ffd05e3ab028.jpg?v=1763116167"},{"product_id":"34hb-3-4-hub-bearing-34hb","title":"NTN R12-2RS 3\/4\" Hub Bearing - 1.625\" OD - Oval Kart \u0026 Jackshaft","description":"\u003cp\u003eMinimizing rolling resistance and maximizing power transfer requires the highest quality \u003cstrong\u003ego kart components\u003c\/strong\u003e, and the NTN R12-2RS 3\/4\" Hub Bearing delivers exactly that for competitive oval racers. Whether you are rebuilding a Buller Drive jackshaft or optimizing the backside of an extended right-front hub on a stepped spindle, this 3\/4\" ID by 1.625\" OD bearing ensures zero-slop rotation. Oval karting places immense lateral loads on wheel assemblies, making bearing integrity a critical factor in maintaining corner speed. The dual rubber seals (RS) lock out dirt, track grit, and moisture, ensuring your setup remains frictionless heat after heat.\u003c\/p\u003e\u003ch2\u003eIntegrating with Kart Racing Engines and Drivetrains\u003c\/h2\u003e\u003cp\u003eA high-performance bearing doesn't just keep the wheels turning; it directly impacts how efficiently power from \u003cstrong\u003ekart racing engines\u003c\/strong\u003e reaches the ground. When used as a jackshaft bearing in a Buller Drive tube, the R12-2RS specification handles high RPMs without generating excessive heat or vibration. This ensures that your clutch and chain alignment remains true, preventing premature wear on your \u003cstrong\u003ebelts parts\u003c\/strong\u003e and drive system. Every fraction of a horsepower matters, and eliminating drivetrain drag is the easiest way to find extra speed on the straights.\u003c\/p\u003e\u003ch2\u003eChassis Setup and Shop Tires Optimization\u003c\/h2\u003e\u003cp\u003eYour suspension and chassis geometry are only as good as the bearings supporting them. If you're currently browsing for a \u003cstrong\u003ego kart frame for sale\u003c\/strong\u003e or tuning your existing chassis, upgrading your hub bearings is a mandatory step for structural rigidity. A failing bearing will cause wheel flutter, which destroys tire contact patches and ruins your handling predictability. Before you mount and balance new rubber from your \u003cstrong\u003eshop tires\u003c\/strong\u003e inventory, ensure your hubs are packed with these precision NTN bearings to guarantee absolute concentricity. A stable hub means a stable tire, allowing you to push deeper into the braking zones and carry more momentum through the apex.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision Dimensions:\u003c\/strong\u003e 3\/4\" Inner Diameter x 1.625\" Outer Diameter perfectly fits extended right-front oval kart hubs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual Rubber Seals (2RS):\u003c\/strong\u003e Keeps out aggressive track debris, dust, and moisture for extended operational life.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuller Drive Compatible:\u003c\/strong\u003e Serves as an exact replacement jackshaft bearing for Buller Drive tubes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow Friction Retainer:\u003c\/strong\u003e Engineered to reduce rolling resistance, translating more horsepower directly to the track.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh Radial Load Capacity:\u003c\/strong\u003e Withstands the extreme lateral forces generated during high-speed oval cornering.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStepped Spindle Ready:\u003c\/strong\u003e Designed specifically for the backside of extended hubs utilizing stepped size spindles.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eABEC-Rated Precision:\u003c\/strong\u003e Manufactured to strict tolerances to eliminate wheel wobble and vibration.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"NTN","offers":[{"title":"Default Title","offer_id":52562262131006,"sku":"34HB","price":2.28,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/wheelhubbearings-34hb-3-4-hub-bearing-34hb_b52e3b91-3e44-496f-b124-c5c90313a4d6.jpg?v=1763116373"},{"product_id":"km313-wheel-hub-bearing-25mm-id-with-42mm-od-9mm-width-km313","title":"Durable KM313 Wheel Hub Bearing - 25mm ID, 42mm OD, 9mm Width with Steel Shield","description":"\u003cp\u003eStruggling with wheel wobble that slows you down? The KM313 bearing tackles that head-on, offering a robust 25mm inner diameter, 42mm outer diameter, and precise 9mm width to stabilize your kart's hubs effortlessly.\u003c\/p\u003e\u003cp\u003eMarked as 6905Z and equipped with a steel shield, it repels dirt and debris during gritty track sessions, preserving speed and reducing maintenance hassles. For those needing extra sealing, the rubber-sealed 6905RS variant is available via special order—expect 10-14 days for delivery.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eEnhanced \u003cem\u003eshielding\u003c\/em\u003e for longevity in demanding races.\u003c\/li\u003e\n\u003cli\u003eOptimized dimensions for direct fit in metric kart systems.\u003c\/li\u003e\n\u003cli\u003eFriction reduction that translates to quicker acceleration out of turns.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eIntegrate \u003cb\u003eSKU: KM313\u003c\/b\u003e into your build for a more agile, organized racing machine ready to dominate.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How do I know if the KM313 bearing is the right size for my kart?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The KM313 features a 25mm inner diameter (ID), 42mm outer diameter (OD), and 9mm width. Please measure your current hub or spindle shaft to ensure these dimensions match your specific kart setup before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the difference between the 6905Z steel shield and the 6905RS rubber seal?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The 6905Z steel shield included with this bearing offers low-friction protection ideal for racing, while the 6905RS rubber seal provides superior protection against fine dust and moisture, which is better for extremely gritty track conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How often should I replace my wheel hub bearings?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e You should inspect your bearings before every race weekend. If you notice any \"play\" or wobble in the wheel, or if the bearing feels gritty when rotated by hand, it is time to replace it to maintain optimal performance and safety.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I use this bearing on my rear axle?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e No, this bearing is designed for wheel hubs. For rear axle applications, you typically require larger diameter bearings, such as the 50mm axle bearing.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products From Vendor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/50mm-small-diameter-axle-bearing-km680\"\u003eHigh-Performance 50mm Small Diameter Axle Bearing for Metric Karts\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Kart Manufacturing","offers":[{"title":"Default Title","offer_id":52562262327614,"sku":"KM313","price":1.97,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/wheelhubbearings-km313-wheel-hub-bearing-25mm-id-with-42mm-od-9mm-width-km313_89669c71-ca65-48bb-af4b-7c0049bf860c.jpg?v=1763116375"},{"product_id":"58hb-wheel-hub-bearing-for-big-hub-inner-5-8-id-x-1-625-od-58hb","title":"Precision Inner Wheel Hub Bearing for Big Hub Karts - 5\/8\" ID x 1.625\" OD","description":"\u003cp\u003eStruggling with wheel wobble or premature bearing failure on your dirt kart? This inner wheel hub bearing delivers the fix you need for consistent performance. Engineered with a precise 5\/8\" inner diameter and 1.625\" outer diameter, the 58HB model fits seamlessly into big hub assemblies, especially on the left front when paired with a stepped right front big hub.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSealed Protection:\u003c\/strong\u003e Rubber-sealed 1628-2RS design keeps dirt and debris out, extending lifespan during intense races.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatibility Boost:\u003c\/strong\u003e Shares the same outer diameter as our 3\/4\" ID bearing (34HB), making swaps straightforward without hub modifications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpeed Advantage:\u003c\/strong\u003e Low-friction operation minimizes energy loss, allowing your kart to accelerate quicker and handle corners with confidence.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eWhether you're tuning for local tracks or national events, this bearing reduces maintenance downtime and sharpens your competitive edge. Install it to feel the difference in rotational smoothness—your path to shaving seconds off lap times starts here. SKU: 58HB.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How do I know if this 5\/8\" bearing is the right size for my kart?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e This bearing is designed for big hub assemblies requiring a 5\/8\" inner diameter and a 1.625\" outer diameter. If your current spindle or axle shaft measures 5\/8\" and your hub housing measures 1.625\", this is the correct fit.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I use this bearing on both the left and right front hubs?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, this bearing is versatile. It is specifically engineered to fit seamlessly into big hub assemblies, including the left front when paired with a stepped right front big hub.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How often should I replace my wheel bearings?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Bearing lifespan depends on track conditions. If you notice wheel wobble, increased friction, or grinding noises, it is time to replace them. We recommend inspecting your bearings before every race weekend to ensure smooth rotation and prevent mid-race failure.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is this bearing compatible with other Performance Mfg hubs?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, this bearing shares the same outer diameter as our 3\/4\" ID bearing (34HB), allowing you to swap between different hub setups without needing to modify your existing hub housing.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the benefit of the 1628-2RS rubber seal?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The 1628-2RS rubber seal provides a superior barrier against dirt, dust, and track debris compared to metal shields. This protection is essential for dirt karting, as it prevents contaminants from entering the race and causing premature wear.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products From Vendor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/ultrafree-left-front-stepped-wheel-hub-with-1-4-hardware-pm-39stfl-1-4\"\u003ePerformance Mfg UltraFree Left Front Stepped Hub - 1\/4\" Hardware - Oval Racing\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/ultrafree-right-front-stepped-wheel-hub-with-1-4-hardware-pm-39stf-1-4\"\u003ePerformance Mfg UltraFree Right Front Stepped Hub - 1\/4\" Hardware - Racing Spec\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/metric-pattern-front-hub-with-5-8-bearings-5-16-hardware-only-pm-39f-58m\"\u003ePerformance Mfg Metric Front Hub - 5\/8\" Bearings \u0026amp; 5\/16\" Hardware - All Classes\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/ultralite-5-8-front-hub-5-16-hardware-only-pm-39-5-16\"\u003eUltraLite 5\/8\" Front Hub with 5\/16\" Hardware and Rubber Sealed Bearings\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/ultralite-5-8-front-hub-1-4-hardware-only-bullet-tip-studs-pm-39-1-4\"\u003eUltraLite 5\/8\" Front Hub with 1\/4\" Bullet Tip Studs for Precision Kart Handling\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Performance Mfg","offers":[{"title":"Default Title","offer_id":52562263146814,"sku":"58HB","price":4.81,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/wheelhubbearings-58hb-wheel-hub-bearing-for-big-hub-inner-5-8-id-x-1-625-od-58hb_bcce29d5-a4dc-470b-81b6-0dfece384397.jpg?v=1763116183"},{"product_id":"mm1072-5-8-hub-bearing-mm1072","title":"Precision 5\/8\" Hub Bearing for Kart Wheels - Marked 99502H","description":"\u003cp\u003eEngineered for seamless wheel operation, this 5\/8\" hub bearing delivers the reliability kart racers demand during intense track sessions. Marked 99502H, it boasts a 1.375\" outer diameter, fitting snugly into standard kart hubs to minimize vibrations and maximize rotational efficiency.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSmooth Performance:\u003c\/strong\u003e Reduces drag for quicker acceleration and cornering.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable Build:\u003c\/strong\u003e Withstands high-speed stresses without premature wear.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEasy Integration:\u003c\/strong\u003e Compatible with most kart wheel assemblies, excluding Douglas DSM models.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eWhether you're tuning for a sprint race or endurance event, SKU MM1072 elevates your setup, helping you shave seconds off your times with dependable support. Ideal for maintaining that competitive edge.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How do I know if this 5\/8\" bearing is the right size for my kart?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e This bearing is designed for a 5\/8\" spindle or axle shaft and features a 1.375\" outer diameter. Please measure your current hub bore and shaft diameter to ensure a proper fit. Note that this bearing is marked 99502H.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Are these bearings compatible with all kart wheels?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e These are compatible with most standard kart wheel assemblies, but they are specifically not compatible with Douglas DSM wheel models.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How often should I replace my wheel bearings?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e For competitive racing, it is recommended to inspect your bearings before every race weekend. If you notice any grinding, excessive play, or resistance when spinning the wheel, replace them immediately to maintain optimal rotational efficiency.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Do these bearings come pre-greased?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, these bearings are sealed and pre-lubricated for smooth operation. Avoid using harsh solvents during cleaning, as this can strip the internal lubricant and lead to premature wear.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products From Vendor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/snap-ring-style-5-8-wheel-hub-bearing-sr58b\"\u003eSnap Ring 5\/8\" Wheel Hub Bearing - Rubber Sealed for Secure Fit\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/1-2-lower-caster-block-bearing-12lsb\"\u003eMargay Ignite \u0026amp; Brava Sprint 1\/2\" Lower Caster Block Bearing - 1\" OD - Kart Steering\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/ignite-spindle-right-hand-mg466538\"\u003eRight Hand Billet 17mm Spindle for Margay Ignite Chassis\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/ignite-spindle-left-hand-mg465538\"\u003eLeft Hand Billet 17mm Spindle for Margay Ignite Kart\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/k3-king-pin-castle-nut-38cn\"\u003e3\/8-24 AN Castle Nut for K3 King Pin Security\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Margay","offers":[{"title":"Default Title","offer_id":52562265342270,"sku":"MM1072","price":1.78,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/wheelhubbearings-mm1072-5-8-hub-bearing-mm1072_c07ce710-96b6-4082-977a-f8f0dc2fd47c.jpg?v=1763116469"},{"product_id":"snap-ring-style-5-8-wheel-hub-bearing-sr58b","title":"Snap Ring 5\/8\" Wheel Hub Bearing - Rubber Sealed for Secure Fit","description":"\u003cp\u003eStruggling with loose bearings in your kart's hubs? This snap ring style 5\/8\" wheel hub bearing solves that by providing a robust external snap ring for firm retention, even in worn bore setups.\u003c\/p\u003e\u003cp\u003eWith a 1.375\" outer diameter and rubber sealing to block out dirt and moisture, it thrives in demanding race conditions, promoting fluid wheel spin that translates to better control and velocity.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eVersatile Application:\u003c\/b\u003e Suited for tube-style hubs and shaft housings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eEnhanced Security:\u003c\/b\u003e Snap ring prevents axial movement for unwavering stability.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eProven Durability:\u003c\/b\u003e Mirrors the quality of our MM1072 but with upgraded fastening.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eSKU SR58B keeps your kart organized and race-ready, indirectly cutting maintenance time so you focus on dominating the track.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Why should I choose a snap-ring style bearing over a standard press-fit bearing?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The external snap ring provides mechanical retention, which is essential if your hub bore has become slightly worn or oversized over time. It prevents the bearing from shifting axially, ensuring your wheel stays secure under heavy cornering loads.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What are the dimensions of this bearing?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e This bearing features a 5\/8\" inner diameter (ID) and a 1.375\" outer diameter (OD), making it a standard fit for many karting hub applications.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How do the rubber seals benefit my kart's performance?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e The rubber seals are designed to keep track debris, dust, and moisture out of the internal ball races. By preventing contamination, the bearing maintains smoother rotation and lasts longer in the harsh, abrasive environment of a kart track.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is this compatible with my existing Margay hubs?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, this bearing is designed for tube-style hubs and shaft housings. It is a direct upgrade for setups requiring more secure fastening than standard bearings like the MM1072.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products From Vendor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/mm1072-5-8-hub-bearing-mm1072\"\u003ePrecision 5\/8\" Hub Bearing for Kart Wheels - Marked 99502H\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/1-2-lower-caster-block-bearing-12lsb\"\u003eMargay Ignite \u0026amp; Brava Sprint 1\/2\" Lower Caster Block Bearing - 1\" OD - Kart Steering\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/ignite-spindle-right-hand-mg466538\"\u003eRight Hand Billet 17mm Spindle for Margay Ignite Chassis\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/ignite-spindle-left-hand-mg465538\"\u003eLeft Hand Billet 17mm Spindle for Margay Ignite Kart\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/mg55210-vented-12mm-x-210mm-euro-pattern-rotor-mg55210\"\u003eVented 12mm x 210mm Euro Pattern Brake Rotor for High-Performance Karts\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Margay","offers":[{"title":"Default Title","offer_id":52562265637182,"sku":"SR58B","price":1.78,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/files\/wheelhubbearings-snap-ring-style-5-8-wheel-hub-bearing-sr58b_a749e5e6-c9e3-4a08-a90d-5faef50a992a.jpg?v=1763116585"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0962\/4721\/8494\/collections\/wheelhubbearings-17mmb-17mm-hub-bearing-17mmb_e307e8c0-c0c3-4ae7-95b7-95a812373f00.jpg?v=1788973209","url":"https:\/\/swiftkarting.com\/collections\/kart-wheel-hub-bearings-go-kart-racing-parts.oembed","provider":"Swift Karting","version":"1.0","type":"link"}