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 66.40mm Bore Honda CR250R 1999-2000 H5375
LA SLEEVE
$148.95Revitalize your engine with the LA SLEEVE Cylinder Sleeve H5375, designed to provide high-quality performance and durability. This replacement sleeve is engineered to restore the functionality of worn cylinders, ensuring optimal engine efficiency. With...H5375- SKU:
- H5375
- Availability:
- Ships Same Business Day
- Weight:
- 1.45 LBS
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
- TYPE:
- AC
- BORE SIZE METRIC:
- 66.40 MM
- PRODUCT NAME:
- CYLINDER SLEEVE
- UNITS:
- EACH
- COLOR/FINISH:
- CHROME
- RIDING STYLE:
- OFF-ROAD
$148.95 -
LA Sleeve Cylinder Sleeve 2000 Honda CR125R H5439
LA SLEEVE
$127.95Revitalize your engine with the LA SLEEVE Cylinder Sleeve H5439, designed for superior performance and durability. These high-quality replacement sleeves are engineered to restore the functionality of worn-out cylinders, ensuring your engine runs...H5439- SKU:
- H5439
- Availability:
- Ships Same Business Day
- Weight:
- 0.74 LBS
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- AC
- PRODUCT NAME:
- CYLINDER SLEEVE
- UNITS:
- EACH
- BORE SIZE METRIC:
- 54.00 MM
- COLOR/FINISH:
- CHROME
$127.95 -
LA Sleeve Cylinder Sleeve 78.50mm Bore Honda TRX350TM FourTrax Rancher 2000-2006 H5443
LA SLEEVE
$104.95Revitalize your engine with the LA SLEEVE Cylinder Sleeve H5443, engineered to provide a perfect fit and superior performance. This high-quality replacement sleeve is designed to extend the life of your cylinders, ensuring optimal functionality and...H5443- SKU:
- H5443
- Availability:
- Ships Same Business Day
- Weight:
- 1.86 LBS
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
- TYPE:
- RS
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- BORE SIZE METRIC:
- 78.50 MM
- COLOR/FINISH:
- ALUMINUM
- PRODUCT NAME:
- CYLINDER SLEEVE
$104.95 -
LA Sleeve Cylinder Sleeve 54mm Bore Suzuki RM125 1994-1996 FL5255
LA SLEEVE
$131.95Revitalize your engine with the LA SLEEVE Cylinder Sleeve FL5255, designed for precision and durability. Crafted from high-quality materials, these replacement sleeves ensure optimal performance and longevity for your cylinders, making them an essential...FL5255- SKU:
- FL5255
- Availability:
- Ships Same Business Day
- Weight:
- 0.81 LBS
- BORE SIZE METRIC:
- 54.00 MM
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
- TYPE:
- AC
- COLOR/FINISH:
- CHROME
- UNITS:
- EACH
- PRODUCT NAME:
- CYLINDER SLEEVE
- RIDING STYLE:
- OFF-ROAD
$131.95 -
LA Sleeve Cylinder Sleeve 83mm Bore Polaris Scrambler 400 2000-2002 FL5274
LA SLEEVE
$153.95Revitalize your engine with the high-quality LA SLEEVE Cylinder Sleeve FL5274. Designed for precision and durability, this replacement sleeve ensures optimal performance and longevity for your cylinders. Upgrade your machinery with a reliable solution...FL5274- SKU:
- FL5274
- Availability:
- Ships Same Business Day
- Weight:
- 1.35 LBS
- COLOR/FINISH:
- ALUMINUM
- TYPE:
- CI
- UNITS:
- EACH
- BORE SIZE METRIC:
- 83.00 MM
- PRODUCT NAME:
- CYLINDER SLEEVE
- RIDING STYLE:
- ATV
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
$153.95 -
LA Sleeve Cylinder Sleeve 66.4mm Bore 1996 Suzuki RM250 FL5295
LA SLEEVE
$148.95Revitalize your engine with the LA SLEEVE Cylinder Sleeve FL5295, designed to restore performance and extend the life of your cylinders. Crafted with precision and durability in mind, this replacement sleeve ensures a perfect fit and reliable operation...FL5295- SKU:
- FL5295
- Availability:
- Ships Same Business Day
- Weight:
- 1.40 LBS
- COLOR/FINISH:
- CHROME
- UNITS:
- EACH
- BORE SIZE METRIC:
- 66.40 MM
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
- PRODUCT NAME:
- CYLINDER SLEEVE
- TYPE:
- AC
- RIDING STYLE:
- OFF-ROAD
$148.95 -
LA Sleeve Cylinder Sleeve 54mm 1996-1998 Suzuki LT80 FL5323
LA SLEEVE
$131.95Revitalize your engine with the LA SLEEVE Cylinder Sleeve FL5323, designed for optimal performance and durability. This high-quality replacement sleeve ensures a perfect fit, allowing you to extend the life of your cylinders and improve overall...FL5323- SKU:
- FL5323
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- BORE SIZE METRIC:
- 54.00 MM
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
- TYPE:
- AC
- COLOR/FINISH:
- CHROME
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- PRODUCT NAME:
- CYLINDER SLEEVE
$131.95 -
L.A. Sleeve Cylinder Sleeve for Suzuki RM125 1998-1999 54mm FL5346
LA SLEEVE
$127.95Revitalize your engine with the LA SLEEVE Cylinder Sleeve FL5346, designed to restore performance and extend the life of your cylinders. Crafted with precision, these replacement sleeves offer a reliable solution for worn-out cylinders, ensuring optimal...FL5346- SKU:
- FL5346
- Availability:
- Ships Same Business Day
- Weight:
- 0.72 LBS
- BORE SIZE METRIC:
- 54.00 MM
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
- TYPE:
- AC
- PRODUCT NAME:
- CYLINDER SLEEVE
- RIDING STYLE:
- OFF-ROAD
- COLOR/FINISH:
- CHROME
- UNITS:
- EACH
$127.95 -
LA Sleeve Cylinder Sleeve Suzuki RM250 1998 66.40mm FL5357
LA SLEEVE
$148.95Revitalize your engine with the LA SLEEVE Cylinder Sleeve FL5357, designed to restore the performance of your old cylinders. Crafted from high-quality materials, these sleeves ensure durability and a perfect fit, making them an essential choice for any...FL5357- SKU:
- FL5357
- Availability:
- Ships Same Business Day
- Weight:
- 1.40 LBS
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
- COLOR/FINISH:
- CHROME
- UNITS:
- EACH
- BORE SIZE METRIC:
- 66.40 MM
- TYPE:
- AC
- PRODUCT NAME:
- CYLINDER SLEEVE
- RIDING STYLE:
- OFF-ROAD
$148.95 -
L.A. Sleeve Cylinder Sleeve 87.50mm Bore Arctic Cat 500 1998-2009 Suzuki KingQuad 500 2009-2020 Suzuki Vinson 500 2002-2007 FL5370
LA SLEEVE
$117.95Revitalize your engine with the LA SLEEVE Cylinder Sleeve FL5370, designed for optimal performance and durability. This high-quality replacement sleeve ensures a perfect fit, allowing your cylinders to operate like new. Engineered for longevity, it’s the...FL5370- SKU:
- FL5370
- Availability:
- Ships Same Business Day
- Weight:
- 1.75 LBS
- COLOR/FINISH:
- ALUMINUM
- MATERIAL:
- CHROME-MOLY ALLOY
- PRODUCT NAME:
- CYLINDER SLEEVE
- ENGINE TYPE:
- 4-STROKE
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- BORE SIZE METRIC:
- 87.50 MM
- DISPLACEMENT:
- 493 CC
- TYPE:
- AC
$117.95 -
LA Sleeve Cylinder Sleeve Suzuki RM125 2000-2003 FL5420
LA SLEEVE
$127.95Revitalize your engine with the LA SLEEVE Cylinder Sleeve FL5420, designed to restore performance and extend the life of your cylinders. Crafted with precision, this high-quality replacement sleeve ensures a perfect fit and optimal functionality. Upgrade...FL5420- SKU:
- FL5420
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- BORE SIZE METRIC:
- 54.00 MM
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
- TYPE:
- AC
- COLOR/FINISH:
- CHROME
- UNITS:
- EACH
- PRODUCT NAME:
- CYLINDER SLEEVE
- RIDING STYLE:
- OFF-ROAD
$127.95 -
LA Sleeve Cylinder Sleeve 90mm Bore Suzuki DR-Z400S 2000-2022 FL5430
LA SLEEVE
$117.95Revitalize your engine with the LA SLEEVE Cylinder Sleeve FL5430, designed for optimal performance and durability. This high-quality replacement sleeve ensures your old cylinder operates like new, enhancing efficiency and longevity. Ideal for those...FL5430- SKU:
- FL5430
- Availability:
- Ships Same Business Day
- Weight:
- 1.30 LBS
- BORE SIZE METRIC:
- 90.00 MM
- RIDING STYLE:
- OFF-ROAD
- COLOR/FINISH:
- ALUMINUM
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
- PRODUCT NAME:
- CYLINDER SLEEVE
- RIDING STYLE:
- STREET
- TYPE:
- AC
- ENGINE TYPE:
- 4-STROKE
- UNITS:
- EACH
$117.95 -
LA Sleeve Cylinder Sleeve for Suzuki RM250 2002 66.4mm FL5474
LA SLEEVE
$148.95Revitalize your engine with the LA SLEEVE Cylinder Sleeve FL5474, a premium quality replacement designed to restore the performance of your old cylinders. Engineered with precision, this sleeve ensures durability and optimal fit, allowing for seamless...FL5474- SKU:
- FL5474
- Availability:
- Ships Same Business Day
- Weight:
- 1.44 LBS
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
- TYPE:
- AC
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- BORE SIZE METRIC:
- 66.40 MM
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- CYLINDER SLEEVE
$148.95 -
L.A. Sleeve Cylinder Sleeve for 1985 Suzuki LT250R QuadRacer 70.00mm FL942
LA SLEEVE
$148.95Revitalize your engine with the LA SLEEVE Cylinder Sleeve FL942, designed to deliver exceptional performance and durability. These high-quality replacement sleeves provide a perfect fit for your old cylinders, ensuring optimal compression and longevity...FL942- SKU:
- FL942
- Availability:
- Ships Same Business Day
- Weight:
- 1.10 LBS
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
- TYPE:
- CI
- BORE SIZE METRIC:
- 70.00 MM
- COLOR/FINISH:
- ALUMINUM
- PRODUCT NAME:
- CYLINDER SLEEVE
- RIDING STYLE:
- ATV
- UNITS:
- EACH
$148.95 -
LA Sleeve Cylinder Sleeve for Kawasaki KX85 2014-2022 KA5778
LA SLEEVE
$117.95Revitalize your engine with the LA SLEEVE Cylinder Sleeve KA5778, designed for superior performance and durability. This high-quality replacement sleeve ensures a perfect fit, extending the life of your cylinders and enhancing overall engine efficiency...09310855- SKU:
- 09310855
- Availability:
- Ships Same Business Day
- Weight:
- 0.65 LBS
- BORE SIZE METRIC:
- 48.50 MM
- PRODUCT NAME:
- CYLINDER SLEEVE
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- AC
- COLOR/FINISH:
- CHROME
- UNITS:
- EACH
$117.95 -
LA Sleeve Cylinder Sleeve Kawasaki KX100 2014-2021 KA5779
LA SLEEVE
$117.95Revitalize your engine with the LA SLEEVE Cylinder Sleeve KA5779, designed for exceptional durability and performance. This high-quality replacement sleeve ensures a precise fit, allowing for optimal engine function and longevity. Upgrade your machinery...09310856- SKU:
- 09310856
- Availability:
- Ships Same Business Day
- Weight:
- 0.65 LBS
- PRODUCT NAME:
- CYLINDER SLEEVE
- RIDING STYLE:
- OFF-ROAD
- COLOR/FINISH:
- CHROME
- UNITS:
- EACH
- BORE SIZE METRIC:
- 52.50 MM
- TYPE:
- AC
$117.95 -
LA Sleeve Cylinder Sleeve for 2009 KTM 450SX FL5638
LA SLEEVE
$131.95Revitalize your engine with the LA SLEEVE Cylinder Sleeve FL5638, designed for optimal performance and durability. These high-quality replacement sleeves breathe new life into old cylinders, ensuring a reliable and efficient operation. Engineered with...09310858- SKU:
- 09310858
- Availability:
- Ships Same Business Day
- Weight:
- 1.40 LBS
- TYPE:
- AC
- COLOR/FINISH:
- CHROME
- UNITS:
- EACH
- BORE SIZE METRIC:
- 97.00 MM
- PRODUCT NAME:
- CYLINDER SLEEVE
- RIDING STYLE:
- OFF-ROAD
$131.95 -
LA Sleeve Cylinder Sleeve Yamaha YZ250F 2014-2022 YA5780
LA SLEEVE
$104.95Revitalize your engine with the LA SLEEVE Cylinder Sleeve YA5780, designed for exceptional durability and performance. This high-quality replacement sleeve ensures a perfect fit, allowing your old cylinders to regain their functionality and efficiency...09310859- SKU:
- 09310859
- Availability:
- Ships Same Business Day
- Weight:
- 1.10 LBS
- BORE SIZE METRIC:
- 77.00 MM
- TYPE:
- AC
- PRODUCT NAME:
- CYLINDER SLEEVE
- RIDING STYLE:
- OFF-ROAD
- COLOR/FINISH:
- CHROME
- ENGINE TYPE:
- 4-STROKE
- UNITS:
- EACH
$104.95 -
LA Sleeve Cylinder Sleeve 54mm Bore Honda CR125R 2003 H5489
LA SLEEVE
$127.95Revitalize your engine with the LA SLEEVE Cylinder Sleeve H5489, designed for exceptional durability and a perfect fit. This high-quality replacement sleeve restores the functionality of worn-out cylinders, ensuring optimal performance and longevity...09310002- SKU:
- 09310002
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- COLOR/FINISH:
- CHROME
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- PRODUCT NAME:
- CYLINDER SLEEVE
- BORE SIZE METRIC:
- 54.00 MM
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
- TYPE:
- AC
$127.95 -
LA Sleeve Cylinder Sleeve for Kawasaki KX65 2002-2022 and Suzuki RM65 2003-2005 KA5472
LA SLEEVE
$91.95Revitalize your engine with the LA SLEEVE Cylinder Sleeve KA5472, designed for optimal performance and durability. This high-quality replacement sleeve ensures a perfect fit, allowing your old cylinders to regain their strength and functionality...09310004- SKU:
- 09310004
- Availability:
- Ships Same Business Day
- Weight:
- 0.55 LBS
- BORE SIZE METRIC:
- 44.50 MM
- COLOR/FINISH:
- CHROME
- UNITS:
- EACH
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
- TYPE:
- AC
- PRODUCT NAME:
- CYLINDER SLEEVE
- RIDING STYLE:
- OFF-ROAD
$91.95
