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 Yamaha YFB 250 1990-2000 YA5101
LA SLEEVE
$112.95Premium Replacement Cylinder Sleeves YA5101 Revive your engine's performance with our top-of-the-line replacement cylinder sleeves. Crafted for exceptional quality and precision, these sleeves offer an ideal solution for restoring the functionality of...YA5101- SKU:
- YA5101
- Availability:
- Ships Same Business Day
- Weight:
- 1.10 LBS
- TYPE:
- RS
- COLOR/FINISH:
- ALUMINUM
- PRODUCT NAME:
- CYLINDER SLEEVE
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- BORE SIZE METRIC:
- 71.00 MM
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
$112.95Qty in Cart: 0Quantity:Price:$112.95Subtotal: -
LA Sleeve Cylinder Sleeve for Yamaha YZ85 2002-2022 YA5476
LA SLEEVE
$117.95Premium Replacement Cylinder Sleeves YA5476 Revitalize your machinery with our Premium Replacement Cylinder Sleeves, designed to restore performance and reliability. Crafted with precision and built to last, these sleeves provide an excellent solution...YA5476- SKU:
- YA5476
- Availability:
- Ships Same Business Day
- Weight:
- 0.46 LBS
- COLOR/FINISH:
- CHROME
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- CYLINDER SLEEVE
- UNITS:
- EACH
- BORE SIZE METRIC:
- 47.40 MM
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
- TYPE:
- AC
$117.95 -
LA Sleeve Cylinder Sleeve for Kawasaki KDX200 1989-1994 KA5086
LA SLEEVE
$137.95Revitalize your engine with the LA SLEEVE Cylinder Sleeve KA5086, designed to provide superior performance and durability. This high-quality replacement sleeve ensures a precise fit, allowing your engine to operate at its best. Ideal for those looking to...KA5086- SKU:
- KA5086
- Availability:
- Ships Same Business Day
- Weight:
- 1.06 LBS
- COLOR/FINISH:
- CHROME
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- BORE SIZE METRIC:
- 66.00 MM
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
- PRODUCT NAME:
- CYLINDER SLEEVE
- TYPE:
- AC
$137.95Qty in Cart: 0Quantity:Price:$137.95Subtotal: -
LA Sleeve Cylinder Sleeve for 1992 Kawasaki KX250 66.40mm Bore KA5153
LA SLEEVE
$148.95Revitalize your engine with the LA SLEEVE Cylinder Sleeve KA5153, designed for optimal performance and durability. This high-quality replacement sleeve ensures a perfect fit, restoring your old cylinders to their former glory. Engineered for reliability,...KA5153- SKU:
- KA5153
- Availability:
- Ships Same Business Day
- Weight:
- 1.45 LBS
- UNITS:
- EACH
- COLOR/FINISH:
- CHROME
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- AC
- BORE SIZE METRIC:
- 66.40 MM
- PRODUCT NAME:
- CYLINDER SLEEVE
$148.95Qty in Cart: 0Quantity:Price:$148.95Subtotal: -
LA Sleeve Cylinder Sleeve 54mm Bore Kawasaki KX125 1992 KA5154
LA SLEEVE
$131.95Revitalize your engine with the LA SLEEVE Cylinder Sleeve KA5154, 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 optimal...KA5154- SKU:
- KA5154
- Availability:
- Ships Same Business Day
- Weight:
- 0.80 LBS
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- AC
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- CYLINDER SLEEVE
- UNITS:
- EACH
- BORE SIZE METRIC:
- 54.00 MM
$131.95Qty in Cart: 0Quantity:Price:$131.95Subtotal: -
LA Sleeve Cylinder Sleeve for Kawasaki KDX200 1995-2006 KA5252
LA SLEEVE
$131.95Revitalize your engine with the LA SLEEVE Cylinder Sleeve KA5252, designed to restore performance and extend the life of your cylinders. Crafted with precision and durability in mind, this replacement sleeve ensures optimal fit and function for a...KA5252- SKU:
- KA5252
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
- UNITS:
- EACH
- BORE SIZE METRIC:
- 66.00 MM
- COLOR/FINISH:
- CHROME
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- AC
- PRODUCT NAME:
- CYLINDER SLEEVE
$131.95 -
LA Sleeve Cylinder Sleeve Kawasaki KX-450F 2008-2010 KA5307
LA SLEEVE
$131.95Revitalize your engine with the LA SLEEVE Cylinder Sleeve KA5307, designed for exceptional performance and durability. This high-quality replacement sleeve ensures a perfect fit, allowing your old cylinders to regain their original functionality...KA5307- SKU:
- KA5307
- Availability:
- Ships Same Business Day
- Weight:
- 0.68 LBS
- BORE SIZE METRIC:
- 54.00 MM
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- CYLINDER SLEEVE
- UNITS:
- EACH
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- AC
$131.95 -
LA Sleeve Cylinder Sleeve 48mm Bore Kawasaki KX80 1998-2000 KA5351
LA SLEEVE
$117.95Revitalize your engine with the LA SLEEVE Cylinder Sleeve KA5351, designed to restore performance and extend the life of your cylinders. Crafted from high-quality materials, this replacement sleeve ensures a perfect fit and superior durability, making it...KA5351- SKU:
- KA5351
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- BORE SIZE METRIC:
- 48.00 MM
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- COLOR/FINISH:
- CHROME
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
- PRODUCT NAME:
- CYLINDER SLEEVE
- TYPE:
- AC
$117.95 -
LA Sleeve Cylinder Sleeve for 1998-1999 Kawasaki KX125 54mm Bore KA5354
LA SLEEVE
$131.95Revitalize your engine with the LA SLEEVE Cylinder Sleeve KA5354, a premium quality replacement designed to restore performance and extend the life of your old cylinders. Crafted with precision, this cylinder sleeve ensures a perfect fit and optimal...KA5354- SKU:
- KA5354
- Availability:
- Ships Same Business Day
- Weight:
- 0.68 LBS
- COLOR/FINISH:
- CHROME
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- BORE SIZE METRIC:
- 54.00 MM
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
- PRODUCT NAME:
- CYLINDER SLEEVE
- TYPE:
- AC
$131.95Qty in Cart: 0Quantity:Price:$131.95Subtotal: -
LA Sleeve Cylinder Sleeve Kawasaki KX250 2001 66.40mm Bore KA5481
LA SLEEVE
$148.95Revitalize your engine with the LA SLEEVE Cylinder Sleeve KA5481, designed for optimal performance and durability. This high-quality replacement sleeve breathes new life into worn cylinders, ensuring reliable operation and extended engine life...KA5481- SKU:
- KA5481
- Availability:
- Ships Same Business Day
- Weight:
- 1.42 LBS
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
- PRODUCT NAME:
- CYLINDER SLEEVE
- TYPE:
- AC
- BORE SIZE METRIC:
- 66.40 MM
- COLOR/FINISH:
- CHROME
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
$148.95 -
LA Sleeve Cylinder Sleeve for 1990-1991 Honda CR250R H5105
LA SLEEVE
$148.95The LA SLEEVE Cylinder Sleeve H5105 is designed to rejuvenate your engine's performance by providing a high-quality replacement for worn-out cylinder sleeves. Engineered for durability and precision, this product ensures a perfect fit and optimal...H5105- SKU:
- H5105
- Availability:
- Ships Same Business Day
- Weight:
- 1.44 LBS
- BORE SIZE METRIC:
- 66.40 MM
- PRODUCT NAME:
- CYLINDER SLEEVE
- UNITS:
- EACH
- COLOR/FINISH:
- CHROME
- RIDING STYLE:
- OFF-ROAD
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
- TYPE:
- AC
$148.95 -
LA Sleeve Cylinder Sleeve for Honda CR250R 1995-1996 H5250
LA SLEEVE
$148.95Revitalize your engine with the LA SLEEVE Cylinder Sleeve H5250, designed for exceptional durability and performance. These high-quality replacement sleeves breathe new life into aging cylinders, ensuring optimal engine functionality. Perfect for both...H5250- SKU:
- H5250
- Availability:
- Ships Same Business Day
- Weight:
- 1.44 LBS
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
- PRODUCT NAME:
- CYLINDER SLEEVE
- TYPE:
- AC
- BORE SIZE METRIC:
- 66.40 MM
- COLOR/FINISH:
- CHROME
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
$148.95 -
LA Sleeve Cylinder Sleeve 86mm Bore Honda TRX400FW 1995-2003 H5286
LA SLEEVE
$117.95Revitalize your engine with the LA SLEEVE Cylinder Sleeve H5286, designed to restore performance and extend the life of your old cylinders. Crafted from high-quality materials, these replacement sleeves ensure a precise fit and optimal durability, making...H5286- SKU:
- H5286
- Availability:
- Ships Same Business Day
- Weight:
- 2.35 LBS
- COLOR/FINISH:
- ALUMINUM
- RIDING STYLE:
- ATV
- PRODUCT NAME:
- CYLINDER SLEEVE
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
- TYPE:
- RS
- BORE SIZE METRIC:
- 86.00 MM
- UNITS:
- EACH
$117.95Qty in Cart: 0Quantity:Price:$117.95Subtotal: -
LA Sleeve Cylinder Sleeve for 1997-1998 Honda CR250R 66.4mm Bore H5318
LA SLEEVE
$148.95Revitalize your engine with the LA SLEEVE Cylinder Sleeve H5318, designed for optimal performance and durability. This high-quality replacement sleeve is engineered to restore the integrity of your old cylinders, ensuring longevity and efficiency in your...H5318- SKU:
- H5318
- Availability:
- Ships Same Business Day
- Weight:
- 1.44 LBS
- BORE SIZE METRIC:
- 66.40 MM
- PRODUCT NAME:
- CYLINDER SLEEVE
- UNITS:
- EACH
- COLOR/FINISH:
- CHROME
- RIDING STYLE:
- OFF-ROAD
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
- TYPE:
- AC
$148.95 -
LA Sleeve Cylinder Sleeve for Suzuki RMX250 1993-1998 FL5271
LA SLEEVE
$153.95Revitalize your engine with the LA SLEEVE Cylinder Sleeve FL5271, designed for optimal performance and durability. This high-quality replacement sleeve ensures a perfect fit and restores functionality to worn-out cylinders, making it an essential...FL5271- SKU:
- FL5271
- Availability:
- Ships Same Business Day
- Weight:
- 1.32 LBS
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
- TYPE:
- AC
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- BORE SIZE METRIC:
- 67.00 MM
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- CYLINDER SLEEVE
$153.95Qty in Cart: 0Quantity:Price:$153.95Subtotal: -
LA SLEEVE Cylinder Sleeve for Suzuki RM85 2002-2008 FL5419
LA SLEEVE
$171.95Revitalize your engine with the LA SLEEVE Cylinder Sleeve FL5419, designed for optimal performance and durability. These high-quality replacement sleeves offer a perfect fit, ensuring your engine runs smoothly and efficiently. Upgrade your old cylinders...FL5419- SKU:
- FL5419
- Availability:
- Ships Same Business Day
- Weight:
- 1.42 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
$171.95Qty in Cart: 0Quantity:Price:$171.95Subtotal: -
LA Sleeve Cylinder Sleeve 66.40mm Bore 2012 Suzuki RM-Z450 FL5465
LA SLEEVE
$148.95Revitalize your engine with the LA SLEEVE Cylinder Sleeve FL5465, designed to enhance performance and extend the life of your cylinders. Made from high-quality materials, this replacement sleeve offers a perfect fit and durability, ensuring optimal...FL5465- SKU:
- FL5465
- Availability:
- Ships Same Business Day
- Weight:
- 1.42 LBS
- PRODUCT NAME:
- CYLINDER SLEEVE
- RIDING STYLE:
- OFF-ROAD
- BORE SIZE METRIC:
- 66.40 MM
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
- TYPE:
- AC
- COLOR/FINISH:
- CHROME
- UNITS:
- EACH
$148.95Qty in Cart: 0Quantity:Price:$148.95Subtotal: -
LA Sleeve Cylinder Sleeve 2004-2005 Kawasaki KX125 54mm Bore KA5570
LA SLEEVE
$149.95Revitalize your engine with the LA SLEEVE Cylinder Sleeve KA5570, designed for precision and durability. This high-quality replacement sleeve ensures optimal performance and longevity, making it an essential upgrade for any engine rebuild. Experience...09310157- SKU:
- 09310157
- Availability:
- Ships Same Business Day
- Weight:
- 0.80 LBS
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
- TYPE:
- AC
- PRODUCT NAME:
- CYLINDER SLEEVE
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- BORE SIZE METRIC:
- 54.00 MM
- COLOR/FINISH:
- CHROME
- ENGINE TYPE:
- 2-STROKE
$149.95Qty in Cart: 0Quantity:Price:$149.95Subtotal: -
LA Sleeve Cylinder Sleeve for 1988-1990 Kawasaki KX80 KA5041
LA SLEEVE
$117.95Revitalize your engine with the LA SLEEVE Cylinder Sleeve KA5041, designed for optimal performance and durability. This high-quality replacement sleeve ensures a perfect fit and enhances the longevity of your cylinders, making it an essential component...09310325- SKU:
- 09310325
- Availability:
- Ships Same Business Day
- Weight:
- 0.45 LBS
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- CYLINDER SLEEVE
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- BORE SIZE METRIC:
- 48.00 MM
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
- TYPE:
- AC
$117.95 -
LA SLEEVE Cylinder Sleeve for Harley-Davidson 1984-1998 Models FL5374
LA SLEEVE
$143.95Revitalize your engine with the LA SLEEVE Cylinder Sleeve FL5374, designed to restore performance and extend the life of worn cylinders. Crafted with precision and durability in mind, this replacement sleeve ensures a perfect fit and optimal function,...09310644- SKU:
- 09310644
- Availability:
- Ships Same Business Day
- Weight:
- 2.40 LBS
- BORE SIZE METRIC:
- 104.00 MM
- ENGINE TYPE:
- 4-STROKE
- MATERIAL:
- CHROME-MOLY ALLOY
- UNITS:
- EACH
- COLOR/FINISH:
- ALUMINUM
- DISPLACEMENT:
- 722 CC
- RIDING STYLE:
- STREET
- TYPE:
- AC
- PRODUCT NAME:
- CYLINDER SLEEVE
$143.95Qty in Cart: 0Quantity:Price:$143.95Subtotal:
