Dirt Bike Cylinders and Parts
Dirt Bike Cylinders & Cylinder Kits for Yamaha, Kawasaki, KTM & Husqvarna at JJ Motorsports
Rebore or replace your dirt bike's cylinder with premium OEM-spec and big-bore cylinders from JJ Motorsports, precision-machined for perfect piston fit, maximum heat dissipation, and race-proven durability in motocross, enduro, and trail riding. Our selection includes standard bore replacements and performance cylinders from Cylinder Works, Moose Racing, and Wossner, complete with plating options for long life and easy installation. Compatible with top models like Yamaha YZ/WR250F, Kawasaki KX250F, KTM 85 SX, Husqvarna TC85, and Gas Gas MC85, these high-quality cylinders restore compression, increase displacement when paired with big-bore kits, and deliver reliable performance in dusty, high-heat conditions. Whether refreshing a scored cylinder or building a big-bore stroker, these components provide exact OEM tolerances or upgraded plating for superior wear resistance and championship-level power on every ride.
At JJ Motorsports, we stock the best dirt bike cylinders and kits from Cylinder Works, Moose Racing, and Wossner with fast shipping and expert support. Free shipping over $99!
Top Dirt Bike Cylinders & Kits
- Cylinder Works Standard Bore Cylinder 66.40mm Yamaha YZ250F/WR250F 20009 – OEM-spec replacement cylinder for Yamaha YZ250F and WR250F; ready for stock or big-bore piston, nickel-silicon carbide plating for ultimate wear resistance.
- Moose Racing Standard Cylinder Kawasaki KX250F MSE30012 – Direct OEM replacement cylinder for Kawasaki KX250F 2004-2016; precision-machined with plating for perfect fit and long life.
- Wossner Cylinder 47.00mm KTM/Husqvarna/Gas Gas 85 WBC8147A – High-performance cylinder for KTM 85 SX, Husqvarna TC85, and Gas Gas MC85; forged construction with advanced plating for 85cc 2-stroke power and durability.
Browse our in-stock inventory below with same-day shipping and expert support. Free shipping on orders over $99! Questions? Contact us for fitment advice!
- Product
- Qty in Cart
- Quantity
- Price
- Subtotal
-
Cylinder Works Standard Bore Cylinder Kit Kawasaki KX250F 2017-2019 30012-K02
CYLINDER WORKS
$652.95CYLINDER WORKS Cylinder Kit Standard Bore 30012-K02 Upgrade your engine with the CYLINDER WORKS Cylinder Kit, designed for seamless installation and optimal performance. Crafted to match OEM specifications, this kit ensures a perfect fit while enhancing...09310727- SKU:
- 09310727
- Availability:
- Ships Same Business Day
- Weight:
- 3.25 LBS
- BORE SIZE METRIC:
- 77.00 MM
- STYLE:
- STANDARD
- ENGINE TYPE:
- 4-CYCLE
- CYLINDER DIAMETER METRIC:
- 77.00 MM
- RIDING STYLE:
- OFF-ROAD
- COMPRESSION RATIO IMPERIAL:
- 13.4:1
- CYLINDER BORE COATING:
- NICKEL-SILICON CARBIDE
- CYLINDER DIAMETER:
- 77,00 MM
- PRODUCT NAME:
- CYLINDER KIT
- UNITS:
- KIT
$652.95 -
Cylinder Works Kawasaki KX 250 F 2017-2019 Standard Bore High Compression Cylinder Kit 30012-K02HC
CYLINDER WORKS
$716.95CYLINDER WORKS Cylinder Kit 30012-K02HC Enhance your engine's performance with the CYLINDER WORKS Cylinder Kit 30012-K02HC. This ready-to-install, direct bolt-on solution offers a seamless fit, ensuring your vehicle maintains its original look while...09310729- SKU:
- 09310729
- Availability:
- Ships Same Business Day
- Weight:
- 3.25 LBS
- CYLINDER DIAMETER:
- 77,00 MM
- ENGINE TYPE:
- 4-CYCLE
- PRODUCT NAME:
- CYLINDER KIT
- CYLINDER DIAMETER METRIC:
- 77.00 MM
- STYLE:
- STANDARD
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- BORE SIZE METRIC:
- 77.00 MM
- COMPRESSION RATIO IMPERIAL:
- 14.3:1
$716.95 -
LA Sleeve Cylinder Sleeve for 1997-2005 Kawasaki KDX220R 69mm Bore KA5319
LA SLEEVE
$151.95LA SLEEVE Cylinder Sleeve KA5319 Revitalize your engine with the LA SLEEVE Cylinder Sleeve KA5319, designed for exceptional durability and performance. This high-quality replacement sleeve ensures a perfect fit and enhances the longevity of your engine,...09310083- SKU:
- 09310083
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
- TYPE:
- AC
- BORE SIZE METRIC:
- 69.00 MM
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- CYLINDER SLEEVE
$151.95Qty in Cart: 0Quantity:Price:$151.95Subtotal: -
LA Sleeve Cylinder Sleeve 66.40mm Bore Suzuki RM250 2003 FL5494
LA SLEEVE
$171.95LA SLEEVE Cylinder Sleeve FL5494 Revitalize your engine with the LA SLEEVE Cylinder Sleeve FL5494, designed for superior performance and durability. This high-quality replacement sleeve ensures optimal fit and function, bringing your old cylinders back...09310147- SKU:
- 09310147
- Availability:
- Ships Same Business Day
- Weight:
- 1.10 LBS
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- CYLINDER SLEEVE
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- AC
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
- BORE SIZE METRIC:
- 66.40 MM
- UNITS:
- EACH
$171.95 -
LA Sleeve Cylinder Sleeve 66.40mm Bore Suzuki RM250 2006-2008 FL5629
LA SLEEVE
$171.95LA SLEEVE Cylinder Sleeve FL5629 Revitalize your engine with the LA SLEEVE Cylinder Sleeve FL5629, designed for superior performance and durability. This high-quality replacement sleeve ensures a perfect fit, extending the life of your cylinders and...09310150- SKU:
- 09310150
- Availability:
- Ships Same Business Day
- Weight:
- 1.40 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
$171.95 -
LA Sleeve Cylinder Sleeve for Honda XR-650L 1993-2023 H5160
LA SLEEVE
$146.95LA SLEEVE Cylinder Sleeve H5160 Revitalize your engine with the LA SLEEVE Cylinder Sleeve H5160, designed to restore the performance of worn-out cylinders. Crafted from high-quality materials, these sleeves ensure durability and a perfect fit, making...09310151- SKU:
- 09310151
- Availability:
- Ships Same Business Day
- Weight:
- 2.95 LBS
- PRODUCT NAME:
- CYLINDER SLEEVE
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- RS
- BORE SIZE METRIC:
- 100.00 MM
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
- COLOR/FINISH:
- ALUMINUM
- UNITS:
- EACH
$146.95Qty in Cart: 0Quantity:Price:$146.95Subtotal: -
La Sleeve Sleeve and Piston Kit Yamaha YZ125 2002-2023 LAS-5476K
LA SLEEVE
$312.95LA SLEEVE Sleeve and Piston Kit Yamaha LAS-5476K Revitalize your Yamaha with the LA SLEEVE Sleeve and Piston Kit, engineered for optimal performance and durability. This comprehensive top-end rebuild kit combines advanced materials and precision...09310388- SKU:
- 09310388
- Availability:
- Ships Same Business Day
- Weight:
- 1.55 LBS
- MATERIAL:
- IRON
- RIDING STYLE:
- OFF-ROAD
- MATERIAL:
- CAST
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- CYLINDER
- UNITS:
- KIT
$312.95 -
LA Sleeve YZ125 2005-2017 Sleeve and Piston Kit LAS-5533K-1
LA SLEEVE
$360.95LA SLEEVE Sleeve and Piston Kit Yamaha LAS-5533K-1 Upgrade your Yamaha's performance with the LA SLEEVE Sleeve and Piston Kit. This comprehensive top-end rebuild kit is designed to enhance engine efficiency, delivering improved compression, torque, and...09310389- SKU:
- 09310389
- Availability:
- Ships Same Business Day
- Weight:
- 1.80 LBS
- MATERIAL:
- IRON
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- CYLINDER
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- MATERIAL:
- CAST
$360.95 -
LA Sleeve Sleeve and Piston Kit Honda CR250R 2002-2003 LAS-5477K
LA SLEEVE
$422.95LA SLEEVE Sleeve and Piston Kit for Honda LAS-5477K Revitalize your Honda's performance with the LA SLEEVE Sleeve and Piston Kit. This comprehensive top-end rebuild kit is engineered for optimal efficiency, delivering enhanced compression, increased...09310383- SKU:
- 09310383
- Availability:
- Ships Same Business Day
- Weight:
- 2.65 LBS
- MATERIAL:
- CAST
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- CYLINDER
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- MATERIAL:
- IRON
$422.95 -
LA Sleeve Cylinder Rebuild Kit for 1998-2000 Kawasaki KX80 LAS-5351K
LA SLEEVE
$312.95LA SLEEVE Sleeve and Piston Kit Kawasaki LAS-5351K Revitalize your Kawasaki's performance with the LA SLEEVE Sleeve and Piston Kit. This comprehensive top-end rebuild kit is engineered for optimal efficiency, featuring advanced materials that enhance...09310384- SKU:
- 09310384
- Availability:
- Ships Same Business Day
- Weight:
- 1.90 LBS
- MATERIAL:
- CAST
- MATERIAL:
- IRON
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- CYLINDER
- UNITS:
- KIT
- RIDING STYLE:
- OFF-ROAD
$312.95Qty in Cart: 0Quantity:Price:$312.95Subtotal: -
LA Sleeve Honda CR250R 1999-2000 Cylinder Rebuild Kit LAS-5375K
LA SLEEVE
$422.95LA SLEEVE Sleeve and Piston Kit Honda LAS-5375K Elevate your bike's performance with the LA SLEEVE Sleeve and Piston Kit, designed specifically for Honda models. This all-in-one top-end rebuild kit features advanced materials to enhance compression,...09310413- SKU:
- 09310413
- Availability:
- Ships Same Business Day
- Weight:
- 2.80 LBS
- MATERIAL:
- CAST
- MATERIAL:
- IRON
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- CYLINDER
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$422.95 -
LA Sleeve Suzuki RM125 2001-2003 Cylinder Rebuild Kit LAS-5420K-1
LA SLEEVE
$360.95LA SLEEVE Sleeve and Piston Kit Suzuki LAS-5420K-1 Upgrade your Suzuki's performance with the LA SLEEVE Sleeve and Piston Kit. Designed for optimal efficiency, this comprehensive top-end rebuild kit enhances compression, torque, and horsepower, ensuring...09310418- SKU:
- 09310418
- Availability:
- Ships Same Business Day
- Weight:
- 1.90 LBS
- MATERIAL:
- CAST
- MATERIAL:
- IRON
- TYPE:
- CYLINDER
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- REBUILD KIT
$360.95 -
LA Sleeve Sleeve and Piston Kit Yamaha YZ125 1999-2000 LAS-5378K
LA SLEEVE
$360.95LA SLEEVE Sleeve and Piston Kit Yamaha LAS-5378K Elevate your Yamaha's performance with the LA SLEEVE Sleeve and Piston Kit. This comprehensive top-end rebuild kit is designed to enhance compression, torque, and horsepower, ensuring your 2-stroke engine...09310419- SKU:
- 09310419
- Availability:
- Ships Same Business Day
- Weight:
- 1.90 LBS
- MATERIAL:
- CAST
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- CYLINDER
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- MATERIAL:
- IRON
$360.95 -
LA Sleeve Cylinder Sleeve Kawasaki KX125 2000 KA5429
LA SLEEVE
$149.95LA SLEEVE Cylinder Sleeve KA5429 Revitalize your engine with the LA SLEEVE Cylinder Sleeve KA5429, designed for superior performance and longevity. This high-quality replacement sleeve ensures a perfect fit and optimal sealing, bringing your old...KA5429- SKU:
- KA5429
- Availability:
- Ships Same Business Day
- Weight:
- 0.81 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
$149.95 -
LA Sleeve Cylinder Sleeve 48.50mm Bore Kawasaki KX85 2001-2013 KA5449
LA SLEEVE
$133.95LA SLEEVE Cylinder Sleeve KA5449 Revitalize your engine with the LA SLEEVE Cylinder Sleeve KA5449, designed to provide a high-quality replacement for worn-out cylinders. Engineered for durability and performance, this sleeve ensures optimal fit and...KA5449- SKU:
- KA5449
- Availability:
- Ships Same Business Day
- Weight:
- 0.68 LBS
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
- TYPE:
- AC
- PRODUCT NAME:
- CYLINDER SLEEVE
- UNITS:
- EACH
- BORE SIZE METRIC:
- 48.50 MM
- COLOR/FINISH:
- CHROME
- RIDING STYLE:
- OFF-ROAD
$133.95 -
LA Sleeve Cylinder Sleeve for 2001 Kawasaki KX125 KA5451
LA SLEEVE
$149.95LA SLEEVE Cylinder Sleeve KA5451 Revitalize your engine with the LA SLEEVE Cylinder Sleeve KA5451, designed for optimal performance and durability. This high-quality replacement sleeve restores the integrity of worn cylinders, ensuring your machinery...KA5451- SKU:
- KA5451
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- BORE SIZE METRIC:
- 54.00 MM
- COLOR/FINISH:
- CHROME
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- CYLINDER SLEEVE
- UNITS:
- EACH
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
- TYPE:
- AC
$149.95Qty in Cart: 0Quantity:Price:$149.95Subtotal: -
LA Sleeve Cylinder Sleeve for Kawasaki KX250 2002-2003 66.40mm Bore KA5471
LA SLEEVE
$171.95LA SLEEVE Cylinder Sleeve KA5471 Revitalize your engine with the LA SLEEVE Cylinder Sleeve KA5471, a high-quality replacement designed to restore performance and extend the life of your old cylinders. Crafted with precision engineering, this sleeve...KA5471- SKU:
- KA5471
- Availability:
- Ships Same Business Day
- Weight:
- 1.42 LBS
- COLOR/FINISH:
- CHROME
- RIDING STYLE:
- OFF-ROAD
- BORE SIZE METRIC:
- 66.40 MM
- PRODUCT NAME:
- CYLINDER SLEEVE
- UNITS:
- EACH
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
- TYPE:
- AC
$171.95Qty in Cart: 0Quantity:Price:$171.95Subtotal: -
LA Sleeve Cylinder Sleeve Kawasaki KX125 2002 KA5473
LA SLEEVE
$149.95LA SLEEVE Cylinder Sleeve KA5473 Revitalize your engine with the LA SLEEVE Cylinder Sleeve KA5473, designed to restore the performance of worn-out cylinders. Crafted from high-quality materials, this replacement sleeve ensures durability and precision...KA5473- SKU:
- KA5473
- Availability:
- Ships Same Business Day
- Weight:
- 0.68 LBS
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
- PRODUCT NAME:
- CYLINDER SLEEVE
- TYPE:
- AC
- BORE SIZE METRIC:
- 54.00 MM
- COLOR/FINISH:
- CHROME
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
$149.95 -
LA Sleeve Cylinder Sleeve 66.40mm Bore Honda CR250R 2001 H5448
LA SLEEVE
$171.95LA SLEEVE Cylinder Sleeve H5448 Revitalize your engine with the LA SLEEVE Cylinder Sleeve H5448, designed for optimal performance and durability. This high-quality replacement sleeve offers a perfect fit for your old cylinders, ensuring they operate like...H5448- SKU:
- H5448
- Availability:
- Ships Same Business Day
- Weight:
- 1.45 LBS
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- AC
- BORE SIZE METRIC:
- 66.40 MM
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- CYLINDER SLEEVE
- UNITS:
- EACH
$171.95Qty in Cart: 0Quantity:Price:$171.95Subtotal: -
LA Sleeve Cylinder Sleeve for 2001 Honda CR125R H5450
LA SLEEVE
$146.95LA SLEEVE Cylinder Sleeve H5450 Revitalize your engine with the LA SLEEVE Cylinder Sleeve H5450, designed for superior performance and longevity. This high-quality replacement sleeve ensures a perfect fit and optimal sealing, extending the life of your...H5450- SKU:
- H5450
- Availability:
- Ships Same Business Day
- Weight:
- 0.74 LBS
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- CYLINDER SLEEVE
- UNITS:
- EACH
- BORE SIZE METRIC:
- 54.00 MM
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- AC
$146.95
