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
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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 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 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 -
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 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 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 -
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 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 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 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
