{"product_id":"prox-23-cbs24001-crankshaft-bearing-and-seal-kit-moto-house-mx","title":"ProX Crankshaft Bearing and Seal Kit 23.CBS24001 — Yamaha \/ Gas Gas 250F\/300F 2001-2025","description":"\u003ch1\u003e\u003cstrong\u003eProX Crankshaft Bearing and Seal Kit 23.CBS24001 — Yamaha \/ Gas Gas 250F \/ 300F 2001-2025\u003c\/strong\u003e\u003c\/h1\u003e\n\u003ch2\u003eProduct Description\u003c\/h2\u003e\n\u003cp\u003eEnsure your 4-stroke engine performs at its best with the \u003cstrong\u003eProX Crankshaft Bearing and Seal Kit\u003c\/strong\u003e. This premium kit is engineered to provide a reliable, high-performance solution for your crankshaft rebuild, meeting or exceeding \u003cstrong\u003eOEM specifications\u003c\/strong\u003e for precision fitment and long-lasting durability.\u003c\/p\u003e\n\u003cp\u003eWhether you are tackling a comprehensive engine overhaul or routine maintenance, this kit includes the essential high-quality bearings and seals needed to get your machine back on the track or trail. Designed for the high-RPM demands of 4-stroke performance, the ProX kit helps maintain crankshaft stability, reducing vibration and protecting your engine from costly mechanical failures.\u003c\/p\u003e\n\u003ch3\u003eTop Features: ProX Crankshaft Bearing and Seal Kit\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eEngineered to exact OEM specifications for maximum performance and superior longevity\u003c\/li\u003e\n\u003cli\u003eComprehensive kit containing the vital bearings and seals required for a full crankshaft replacement\u003c\/li\u003e\n\u003cli\u003eEngineered to work seamlessly with both OEM and ProX performance crankshafts\u003c\/li\u003e\n\u003cli\u003eOptimized for the high-revving demands of modern 4-stroke off-road and street motorcycles\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003ePlease review the detailed compatibility data below to ensure an exact fitment match for your motorcycle before finalizing your purchase.\u003c\/em\u003e\u003c\/p\u003e\n\u003ch2\u003eFitment List\u003c\/h2\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; border: 1px solid #e0e0e0; margin-top: 15px; margin-bottom: 15px;\"\u003e\n\u003cthead\u003e\n\u003ctr style=\"background-color: #f7f7f7;\"\u003e\n\u003cth style=\"border: 1px solid #e0e0e0; padding: 12px; text-align: left; font-weight: bold; color: #333333;\"\u003eYear Range\u003c\/th\u003e\n\u003cth style=\"border: 1px solid #e0e0e0; padding: 12px; text-align: left; font-weight: bold; color: #333333;\"\u003eVehicle Brand\u003c\/th\u003e\n\u003cth style=\"border: 1px solid #e0e0e0; padding: 12px; text-align: left; font-weight: bold; color: #333333;\"\u003eVehicle Model \u0026amp; Sub-Model\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #e0e0e0; padding: 10px; color: #555555;\"\u003e2001-2025\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #e0e0e0; padding: 10px; color: #555555;\"\u003eYamaha\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #e0e0e0; padding: 10px; color: #555555;\"\u003eYZ250F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003ctd style=\"border: 1px solid #e0e0e0; padding: 10px; color: #555555;\"\u003e2001-2025\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #e0e0e0; padding: 10px; color: #555555;\"\u003eYamaha\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #e0e0e0; padding: 10px; color: #555555;\"\u003eWR250F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #e0e0e0; padding: 10px; color: #555555;\"\u003e2015-2025\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #e0e0e0; padding: 10px; color: #555555;\"\u003eYamaha\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #e0e0e0; padding: 10px; color: #555555;\"\u003eYZ250FX\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003ctd style=\"border: 1px solid #e0e0e0; padding: 10px; color: #555555;\"\u003e2010-2015\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #e0e0e0; padding: 10px; color: #555555;\"\u003eGas Gas\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #e0e0e0; padding: 10px; color: #555555;\"\u003eEC 250F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #e0e0e0; padding: 10px; color: #555555;\"\u003e2013-2015\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #e0e0e0; padding: 10px; color: #555555;\"\u003eGas Gas\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #e0e0e0; padding: 10px; color: #555555;\"\u003eEC 300F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is this kit suitable for high-hour engine rebuilds?\u003c\/strong\u003e\u003cbr\u003eA: Absolutely. When performing a full rebuild on a 4-stroke, replacing crankshaft bearings is a critical step to ensure the longevity of your new piston and cylinder components.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does this kit include everything needed for the crankshaft?\u003c\/strong\u003e\u003cbr\u003eA: Yes, the ProX 23.CBS24001 includes the necessary high-quality bearings and seals to service the crankshaft properly, keeping your bottom end operating smoothly.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eExpert Pro-Tip:\u003c\/strong\u003e When installing new crank bearings on a 4-stroke, patience is key. I always recommend freezing the crankshaft for a few hours before installation, while gently heating the engine cases. This thermal difference makes seating the bearings much smoother and prevents unnecessary stress on the new components or the aluminum cases.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eRecommended Pairings:\u003c\/strong\u003e\u003cbr\u003eo \u003ca href=\"https:\/\/motohousemx.com\/collections\/yamaha-yz250f-yz250fx-performance-parts-and-accessories\"\u003eYamaha YZ250F Performance Parts\u003c\/a\u003e\u003cbr\u003eo \u003ca href=\"https:\/\/motohousemx.com\/collections\/yamaha-4-stroke-dirt-bikes-performance-parts-accessories-moto-house-mx\"\u003eYamaha 4-Stroke Performance Upgrades\u003c\/a\u003e\u003cbr\u003eo \u003ca href=\"https:\/\/motohousemx.com\/collections\/mx-off-road-motorcycle-tools\"\u003eEssential Motorcycle Tools\u003c\/a\u003e\u003c\/p\u003e\n\u003ch2\u003eAbout Moto-House MX\u003c\/h2\u003e\n\u003cp\u003eAt Moto-House MX, we carry the best brands in motocross and off-road performance. Our team has over 40 years of experience helping riders get more out of their bikes. Every order ships fast from our Central Florida location.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003eMoto-House MX – Choice of Champions\u003c\/strong\u003e – Clermont \/ Montverde, FL. Central Florida's premier powersports source with lightning-fast worldwide shipping.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Pro-X","offers":[{"title":"Default Title","offer_id":40304585179219,"sku":"23.CBS24001","price":133.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1754\/5421\/files\/prox-23cbs24001-crankshaft-bearing-kit-2001-2022-yamaha-yz250f-yz250fx-wr250f-990001.jpg?v=1735459809","url":"https:\/\/motohousemx.com\/products\/prox-23-cbs24001-crankshaft-bearing-and-seal-kit-moto-house-mx","provider":"Moto-House MX","version":"1.0","type":"link"}