Dirt Bike Engine
Dirt Bike Engine Parts at JJ Motorsports
Discover a full range of dirt bike engine components for rebuilding or upgrading your performance from JJ Motorsports. From crankshafts to cylinder heads and piston kits, these precision-engineered components ensure reliable performance. For additional upgrades, check out our full selection of off-road dirt bike parts to keep your engine running at peak efficiency on the track or trails.
Shop trusted brands like Wiseco for forged piston kits and K&N for high-flow oil filters. Explore related categories such as Dirt Bike Air and Fuel for intake upgrades or Dirt Bike Exhaust for complete systems.
Browse our in-stock inventory below with same-day shipping and expert support. Questions? Contact us for fitment advice!
- Product
- Qty in Cart
- Quantity
- Price
- Subtotal
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LA Sleeve Cylinder Sleeve 54mm Bore Kawasaki KX125 2003 KA5485
LA SLEEVE
$131.95Revitalize your engine with the LA SLEEVE Cylinder Sleeve KA5485, designed for optimal performance and durability. This high-quality replacement sleeve offers a perfect fit and exceptional resistance to wear, ensuring your engine operates smoothly for...09310005- SKU:
- 09310005
- Availability:
- Ships Same Business Day
- Weight:
- 0.55 LBS
- COLOR/FINISH:
- CHROME
- UNITS:
- EACH
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
- TYPE:
- AC
- BORE SIZE METRIC:
- 54.00 MM
- ENGINE TYPE:
- 2-STROKE
- PRODUCT NAME:
- CYLINDER SLEEVE
- RIDING STYLE:
- OFF-ROAD
$131.95 -
LA Sleeve Cylinder Sleeve Yamaha YZ125 2003 54mm YA5487
LA SLEEVE
$127.95Revitalize your engine with the LA SLEEVE Cylinder Sleeve YA5487, designed for optimal performance and durability. This high-quality replacement sleeve ensures a perfect fit and enhances the lifespan of your engine components. Engineered with precision,...09310007- SKU:
- 09310007
- Availability:
- Ships Same Business Day
- Weight:
- 0.55 LBS
- COLOR/FINISH:
- CHROME
- BORE SIZE METRIC:
- 54.00 MM
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
- PRODUCT NAME:
- CYLINDER SLEEVE
- TYPE:
- AC
- UNITS:
- EACH
- RIDING STYLE:
- OFF-ROAD
$127.95 -
LA Sleeve Cylinder Sleeve 52.50mm Bore Kawasaki KX100 1998-2005 Suzuki RM100 2003 KA5358
LA SLEEVE
$117.95Revitalize your engine with the LA SLEEVE Cylinder Sleeve KA5358, designed for optimal performance and longevity. These high-quality replacement sleeves provide a perfect fit for your existing cylinders, ensuring that your engine operates smoothly and...09310062- SKU:
- 09310062
- Availability:
- Ships Same Business Day
- Weight:
- 0.76 LBS
- COLOR/FINISH:
- CHROME
- UNITS:
- EACH
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
- TYPE:
- AC
- PRODUCT NAME:
- CYLINDER SLEEVE
- RIDING STYLE:
- OFF-ROAD
- BORE SIZE METRIC:
- 52.50 MM
$117.95 -
LA Sleeve Cylinder Sleeve 77mm Bore Suzuki RM-Z250 2004-2021 Kawasaki KX250F 2004-2005 KA5530
LA SLEEVE
$104.95Revitalize your engine with the LA SLEEVE Cylinder Sleeve KA5530, designed for optimal performance and durability. This high-quality replacement sleeve offers a reliable solution for restoring old cylinders, ensuring they operate like new. Engineered...09310063- SKU:
- 09310063
- Availability:
- Ships Same Business Day
- Weight:
- 0.95 LBS
- COLOR/FINISH:
- CHROME
- UNITS:
- EACH
- BORE SIZE METRIC:
- 66.40 MM
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
- TYPE:
- AC
- PRODUCT NAME:
- CYLINDER SLEEVE
- RIDING STYLE:
- OFF-ROAD
$104.95 -
LA Sleeve Cylinder Sleeve for Yamaha YZ250 1989 68mm Bore YA5095
LA SLEEVE
$159.95Revitalize your engine with the LA SLEEVE Cylinder Sleeve YA5095, designed for superior performance and durability. This high-quality replacement sleeve ensures a perfect fit, extending the life of your old cylinders and enhancing engine efficiency...09310069- SKU:
- 09310069
- Availability:
- Ships Same Business Day
- Weight:
- 1.50 LBS
- COLOR/FINISH:
- CHROME
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
- PRODUCT NAME:
- CYLINDER SLEEVE
- UNITS:
- EACH
- BORE SIZE METRIC:
- 68.00 MM
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CS
$159.95 -
LA Sleeve Cylinder Sleeve 99.20mm Bore for 2003-2007 Polaris Predator 500 FL5564
LA SLEEVE
$127.95Revitalize your engine with the LA SLEEVE Cylinder Sleeve FL5564, designed to restore performance and extend the life of your cylinders. Crafted from high-quality materials, this replacement sleeve ensures a precise fit and durability for optimal engine...09310143- SKU:
- 09310143
- Availability:
- Ships Same Business Day
- Weight:
- 1.46 LBS
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- BORE SIZE METRIC:
- 99.20 MM
- COLOR/FINISH:
- ALUMINUM
- TYPE:
- AC
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
- PRODUCT NAME:
- CYLINDER SLEEVE
$127.95 -
LA Sleeve Cylinder Sleeve for Yamaha Grizzly 700 2007-2024 YA5609
LA SLEEVE
$127.95Revitalize your engine with the LA SLEEVE Cylinder Sleeve YA5609, designed for optimal performance and durability. This high-quality replacement sleeve ensures a perfect fit for your old cylinders, extending their lifespan and enhancing engine efficiency...09310145- SKU:
- 09310145
- Availability:
- Ships Same Business Day
- Weight:
- 3.23 LBS
- PRODUCT NAME:
- CYLINDER SLEEVE
- TYPE:
- AC
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
- RIDING STYLE:
- UTV
- BORE SIZE METRIC:
- 102.00 MM
- COLOR/FINISH:
- ALUMINUM
- RIDING STYLE:
- ATV
- UNITS:
- EACH
$127.95 -
LA Sleeve Cylinder Sleeve for 2005-2007 Honda CR85R 47.50mm Bore H5599
LA SLEEVE
$117.95Revitalize your engine with the LA SLEEVE Cylinder Sleeve H5599, designed for optimal performance and longevity. This high-quality replacement sleeve ensures a perfect fit, making it an ideal choice for restoring old cylinders. Engineered with precision,...09310082- SKU:
- 09310082
- Availability:
- Ships Same Business Day
- Weight:
- 0.40 LBS
- COLOR/FINISH:
- CHROME
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- BORE SIZE METRIC:
- 47.50 MM
- PRODUCT NAME:
- CYLINDER SLEEVE
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
- TYPE:
- AC
$117.95 -
LA Sleeve Cylinder Sleeve for 2004-2005 Suzuki RM250 66.40mm Bore FL5534
LA SLEEVE
$148.95Revitalize your engine with the LA SLEEVE Cylinder Sleeve FL5534, designed for superior quality and performance. Engineered to provide a perfect fit, this replacement sleeve enhances durability and ensures optimal functionality for your cylinders...09310148- SKU:
- 09310148
- Availability:
- Ships Same Business Day
- Weight:
- 1.10 LBS
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- CYLINDER SLEEVE
- RIDING STYLE:
- OFF-ROAD
- BORE SIZE METRIC:
- 66.40 MM
- UNITS:
- EACH
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
- TYPE:
- AC
$148.95 -
L.A. Sleeve Cylinder Sleeve for Arctic Cat 700 EFI 2006-2013 Suzuki KingQuad 700 2005-2007 FL5595
LA SLEEVE
$127.95Revitalize your engine with the LA SLEEVE Cylinder Sleeve FL5595, designed for optimal performance and durability. This high-quality replacement sleeve ensures a perfect fit, allowing your old cylinders to regain their functionality and extend the life...09310149- SKU:
- 09310149
- Availability:
- Ships Same Business Day
- Weight:
- 2.18 LBS
- BORE SIZE METRIC:
- 102.00 MM
- COLOR/FINISH:
- ALUMINUM
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
- PRODUCT NAME:
- CYLINDER SLEEVE
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- TYPE:
- AC
$127.95 -
LA Sleeve Cylinder Sleeve for Kawasaki KX250 2005-2007 66.40mm Bore KA5582
LA SLEEVE
$148.95Revitalize your engine with the LA SLEEVE Cylinder Sleeve KA5582, designed to restore performance and extend the life of your cylinders. Crafted with precision and durability in mind, this quality replacement sleeve ensures a perfect fit and optimal...09310158- SKU:
- 09310158
- Availability:
- Ships Same Business Day
- Weight:
- 1.30 LBS
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
- TYPE:
- AC
- COLOR/FINISH:
- CHROME
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- BORE SIZE METRIC:
- 66.40 MM
- PRODUCT NAME:
- CYLINDER SLEEVE
$148.95 -
LA Sleeve Cylinder Sleeve Kawasaki KLR650 1996-2018 100mm Bore KA5598
LA SLEEVE
$141.95Revitalize your engine with the LA SLEEVE Cylinder Sleeve KA5598, designed for superior performance and durability. This high-quality replacement sleeve is engineered to restore the functionality of your old cylinders, ensuring optimal engine efficiency...09310324- SKU:
- 09310324
- Availability:
- Ships Same Business Day
- Weight:
- 3.95 LBS
- UNITS:
- EACH
- BORE SIZE METRIC:
- 100.00 MM
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- CYLINDER SLEEVE
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- RS
$141.95 -
LA Sleeve Honda CR85R 2003-2004 Sleeve and Piston Kit LAS-5488K
LA SLEEVE
$312.95Elevate your Honda's performance with the LA SLEEVE Sleeve and Piston Kit, designed for optimal efficiency and power. This top-end rebuild kit includes everything you need for a seamless installation, ensuring enhanced ring seal for improved compression,...09310412- SKU:
- 09310412
- Availability:
- Ships Same Business Day
- Weight:
- 1.60 LBS
- UNITS:
- KIT
- RIDING STYLE:
- OFF-ROAD
- MATERIAL:
- CAST
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- CYLINDER
- MATERIAL:
- IRON
$312.95 -
LA Sleeve KX85 2001-2013 Sleeve and Piston Kit LAS-5449K-1
LA SLEEVE
$312.95Revitalize your Kawasaki's performance with the LA SLEEVE Sleeve and Piston Kit. This comprehensive top-end rebuild kit is engineered for maximum efficiency, featuring advanced materials and precision design to enhance power and reliability. Experience...09310415- SKU:
- 09310415
- Availability:
- Ships Same Business Day
- Weight:
- 1.46 LBS
- MATERIAL:
- CAST
- PRODUCT NAME:
- REBUILD KIT
- MATERIAL:
- IRON
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CYLINDER
- UNITS:
- KIT
$312.95 -
LA Sleeve Cylinder Rebuild Kit for 2002-2003 Kawasaki KX250 LAS-5471K
LA SLEEVE
$422.95Elevate your Kawasaki's performance with the LA SLEEVE Sleeve and Piston Kit. Designed for optimal efficiency, this comprehensive top-end rebuild kit ensures enhanced compression, increased torque, and greater horsepower. Featuring advanced materials and...09310416- SKU:
- 09310416
- Availability:
- Ships Same Business Day
- Weight:
- 3.00 LBS
- TYPE:
- CYLINDER
- UNITS:
- KIT
- MATERIAL:
- IRON
- RIDING STYLE:
- OFF-ROAD
- MATERIAL:
- CAST
- PRODUCT NAME:
- REBUILD KIT
$422.95 -
LA Sleeve Suzuki RM85 2002-2021 Sleeve and Piston Kit LAS-5479K
LA SLEEVE
$312.95Enhance your Suzuki's performance with the LA SLEEVE Sleeve and Piston Kit. This all-in-one top-end rebuild kit is engineered for superior efficiency and power, featuring advanced materials that ensure optimal ring seal and increased horsepower. Perfect...09310417- SKU:
- 09310417
- Availability:
- Ships Same Business Day
- Weight:
- 1.16 LBS
- MATERIAL:
- CAST
- PRODUCT NAME:
- REBUILD KIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- MATERIAL:
- IRON
- TYPE:
- CYLINDER
$312.95 -
LA SLEEVE Cylinder Sleeve Yamaha XT225 2001-2007 YA5631
LA SLEEVE
$93.95Revitalize your engine with the LA SLEEVE Cylinder Sleeve YA5631, designed for exceptional performance and durability. This high-quality replacement sleeve ensures a perfect fit, restoring your cylinder's functionality and extending its lifespan. Upgrade...09310572- SKU:
- 09310572
- Availability:
- Ships Same Business Day
- Weight:
- 1.05 LBS
- BORE SIZE METRIC:
- 70.00 MM
- COLOR/FINISH:
- CHROME
- UNITS:
- EACH
- PRODUCT NAME:
- CYLINDER SLEEVE
- RIDING STYLE:
- OFF-ROAD
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
- TYPE:
- AC
$93.95 -
L.A. Sleeve Cylinder Sleeve for Honda Pioneer 700 2016-2024 H5621
LA SLEEVE
$127.95Revitalize your engine's performance with the LA SLEEVE Cylinder Sleeve H5621. Designed for durability and precision, this high-quality replacement sleeve ensures a perfect fit and enhances the longevity of your cylinders. Experience improved efficiency...09310642- SKU:
- 09310642
- Availability:
- Ships Same Business Day
- Weight:
- 1.70 LBS
- BORE SIZE METRIC:
- 102.00 MM
- COLOR/FINISH:
- ALUMINUM
- RIDING STYLE:
- UTV
- PRODUCT NAME:
- CYLINDER SLEEVE
- TYPE:
- CI
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
$127.95 -
LA Sleeve Cylinder Sleeve for Yamaha Grizzly 450 2007-2014 Kodiak 450 2003-2024 Rhino 450 2006-2010 Wolverine 450 2006-2022 YA5513
LA SLEEVE
$104.95Revitalize your engine with the LA SLEEVE Cylinder Sleeve YA5513, designed for optimal performance and durability. This high-quality replacement sleeve is engineered to restore old cylinders, ensuring reliable operation and extended engine life...09310645- SKU:
- 09310645
- Availability:
- Ships Same Business Day
- Weight:
- 1.96 LBS
- BORE SIZE METRIC:
- 84.50 MM
- RIDING STYLE:
- UTV
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
- PRODUCT NAME:
- CYLINDER SLEEVE
- TYPE:
- RS
- COLOR/FINISH:
- ALUMINUM
- RIDING STYLE:
- ATV
- UNITS:
- EACH
$104.95 -
LA Sleeve Cylinder Sleeve 47mm KTM 85 SX 2003-2017 FL5551
LA SLEEVE
$117.95Revitalize your engine with the LA SLEEVE Cylinder Sleeve FL5551, designed for optimal performance and durability. These high-quality replacement sleeves ensure a perfect fit, extending the life of your engine while maintaining efficiency. Upgrade your...09310516- SKU:
- 09310516
- Availability:
- Ships Same Business Day
- Weight:
- 0.61 LBS
- BORE SIZE METRIC:
- 100.00 MM
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
- TYPE:
- AC
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- CYLINDER SLEEVE
$117.95
