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
-
LA Sleeve Cylinder Sleeve for Yamaha YZ250 1994-1995 YA5258
LA SLEEVE
$148.95Revitalize your engine with our premium quality replacement cylinder sleeves, designed to restore performance and extend the life of your machinery. Engineered with precision, these sleeves provide a perfect fit, ensuring optimal functionality and...YA5258- SKU:
- YA5258
- Availability:
- Ships Same Business Day
- Weight:
- 1.10 LBS
- UNITS:
- EACH
- COLOR/FINISH:
- CHROME
- BORE SIZE METRIC:
- 68.00 MM
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- AC
- PRODUCT NAME:
- CYLINDER SLEEVE
$148.95 -
LA Sleeve Cylinder Sleeve Yamaha YZ125 1996-1998 YA5348
LA SLEEVE
$131.95Premium Replacement Cylinder Sleeves YA5348 Revamp your engine's performance with our premium replacement cylinder sleeves, designed to rejuvenate worn-out cylinders. Crafted with precision and durability in mind, these sleeves offer a reliable solution...YA5348- SKU:
- YA5348
- Availability:
- Ships Same Business Day
- Weight:
- 0.70 LBS
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
- TYPE:
- AC
- BORE SIZE METRIC:
- 54.00 MM
- PRODUCT NAME:
- CYLINDER SLEEVE
- COLOR/FINISH:
- CHROME
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
$131.95 -
LA Sleeve Cylinder Sleeve Yamaha YZ250 1999-2019 YA5377
LA SLEEVE
$148.95Premium Cylinder Sleeves YA5377 Revitalize your engine with our Premium Cylinder Sleeves, expertly crafted to restore and enhance performance. Designed for both vintage and modern applications, these sleeves ensure your engine runs smoother and more...YA5377- SKU:
- YA5377
- Availability:
- Ships Same Business Day
- Weight:
- 1.50 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 Yamaha YZ125 1999-2001 YA5378
LA SLEEVE
$127.95Premium Cylinder Sleeves - YA5378 Revive your engine's efficiency with our Premium Cylinder Sleeves, meticulously crafted to enhance performance and extend the lifespan of your engine. These sleeves offer a seamless solution for restoring power and...YA5378- SKU:
- YA5378
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
- TYPE:
- AC
- BORE SIZE METRIC:
- 54.00 MM
- PRODUCT NAME:
- CYLINDER SLEEVE
- UNITS:
- EACH
- COLOR/FINISH:
- CHROME
- RIDING STYLE:
- OFF-ROAD
$127.95Qty in Cart: 0Quantity:Price:$127.95Subtotal: -
On Sale
LA Sleeve Cylinder Sleeve for Yamaha YFM400 Kodiak 2000-2004 YA5425
LA SLEEVE
MSRP: $111.95Now: $72.00Was: $111.95Premium Replacement Cylinder Sleeves YA5425 Upgrade your machinery with our Premium Replacement Cylinder Sleeves, designed to breathe new life into worn-out cylinders. These sleeves combine advanced engineering with robust materials, ensuring your...YA5425- SKU:
- YA5425
- Availability:
- Ships Same Business Day
- Weight:
- 1.95 LBS
- ENGINE TYPE:
- 4-STROKE
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- BORE SIZE METRIC:
- 84.50 MM
- TYPE:
- RS
- COLOR/FINISH:
- ALUMINUM
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
- PRODUCT NAME:
- CYLINDER SLEEVE
MSRP: $111.95Now: $72.00Was: $111.95 -
LA Sleeve Cylinder Sleeve for Yamaha YZ125 2002 YA5470
LA SLEEVE
$127.95Premium Replacement Cylinder Sleeves YA5470 Revitalize your engine's performance with our Premium Replacement Cylinder Sleeves. Crafted for precision and durability, these sleeves are designed to restore functionality and enhance the lifespan of your...YA5470- SKU:
- YA5470
- Availability:
- Ships Same Business Day
- Weight:
- 0.68 LBS
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- CYLINDER SLEEVE
- UNITS:
- EACH
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- AC
- BORE SIZE METRIC:
- 54.00 MM
$127.95 -
LA Sleeve Cylinder Sleeve Yamaha YFM660R Grizzly 660 2002-2008 YA7018
LA SLEEVE
$117.95Premium Replacement Cylinder Sleeves - YA7018 Transform your engine's performance with our Premium Replacement Cylinder Sleeves. Engineered for precision and durability, these sleeves are designed to restore the integrity of your cylinders, ensuring your...YA7018- SKU:
- YA7018
- Availability:
- Ships Same Business Day
- Weight:
- 2.48 LBS
- COLOR/FINISH:
- ALUMINUM
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
- TYPE:
- RS
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- BORE SIZE METRIC:
- 100.00 MM
- PRODUCT NAME:
- CYLINDER SLEEVE
- RIDING STYLE:
- UTV
$117.95 -
LA Sleeve Cylinder Sleeve for Yamaha YFM600FW Grizzly 4x4 1998-2001 YA814
LA SLEEVE
$131.95Premium Cylinder Sleeves - YA814 Transform your engine's performance with our Premium Cylinder Sleeves, expertly crafted to rejuvenate worn cylinders. Designed for automotive enthusiasts, these sleeves provide a reliable solution to enhance engine...YA814- SKU:
- YA814
- Availability:
- Ships Same Business Day
- Weight:
- 2.80 LBS
- TYPE:
- RS
- COLOR/FINISH:
- ALUMINUM
- PRODUCT NAME:
- CYLINDER SLEEVE
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- BORE SIZE METRIC:
- 95.00 MM
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
$131.95 -
LA Sleeve Cylinder Sleeve for 1988-2002 Kawasaki KLF220 Bayou 67mm Bore KA5063
LA SLEEVE
$98.95Revitalize your engine with the LA SLEEVE Cylinder Sleeve KA5063, 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...KA5063- SKU:
- KA5063
- Availability:
- Ships Same Business Day
- Weight:
- 1.85 LBS
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- TYPE:
- RS
- BORE SIZE METRIC:
- 67.00 MM
- COLOR/FINISH:
- ALUMINUM
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
- PRODUCT NAME:
- CYLINDER SLEEVE
$98.95 -
LA Sleeve Cylinder Sleeve for 1991-1994 Kawasaki KDX250 KA5079
LA SLEEVE
$153.95Revitalize your engine with the LA SLEEVE Cylinder Sleeve KA5079, a premium quality replacement designed to restore performance and extend the life of your cylinders. Crafted with precision, this sleeve ensures a perfect fit and optimal functionality,...KA5079- SKU:
- KA5079
- Availability:
- Ships Same Business Day
- Weight:
- 1.44 LBS
- BORE SIZE METRIC:
- 67.40 MM
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- CYLINDER SLEEVE
- UNITS:
- EACH
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- AC
$153.95 -
LA Sleeve Cylinder Sleeve 56mm Bore Kawasaki KX125 1990-1991 KA5107
LA SLEEVE
$131.95Revitalize your engine with the LA SLEEVE Cylinder Sleeve KA5107, 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 their...KA5107- SKU:
- KA5107
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- BORE SIZE METRIC:
- 56.00 MM
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- COLOR/FINISH:
- CHROME
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
- PRODUCT NAME:
- CYLINDER SLEEVE
- TYPE:
- AC
$131.95 -
LA Sleeve Cylinder Sleeve for Kawasaki KX80 1991-1994 KA5121
LA SLEEVE
$117.95Revitalize your engine with the LA SLEEVE Cylinder Sleeve KA5121, designed to provide a durable and reliable replacement for worn-out cylinders. Engineered for precision and performance, this sleeve ensures optimal fit and longevity, making it the ideal...KA5121- SKU:
- KA5121
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
- BORE SIZE METRIC:
- 48.00 MM
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- CYLINDER SLEEVE
- UNITS:
- EACH
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- AC
$117.95 -
LA Sleeve Cylinder Sleeve for Kawasaki KX125 1993 54mm Bore KA5179
LA SLEEVE
$131.95Revitalize your engine's performance with the LA SLEEVE Cylinder Sleeve KA5179. Designed for precision and durability, this quality replacement sleeve ensures your old cylinders operate like new, enhancing overall efficiency and longevity. Trust in...KA5179- SKU:
- KA5179
- Availability:
- Ships Same Business Day
- Weight:
- 0.81 LBS
- BORE SIZE METRIC:
- 54.00 MM
- COLOR/FINISH:
- CHROME
- RIDING STYLE:
- OFF-ROAD
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
- PRODUCT NAME:
- CYLINDER SLEEVE
- UNITS:
- EACH
- TYPE:
- AC
$131.95 -
LA Sleeve Cylinder Sleeve for 1993 Kawasaki KX250 66.40mm Bore KA5180
LA SLEEVE
$148.95Revitalize your engine with the LA SLEEVE Cylinder Sleeve KA5180, designed for optimal performance and durability. This high-quality replacement sleeve offers a perfect fit for your engine, ensuring smooth operation and extended lifespan. Upgrade your...KA5180- SKU:
- KA5180
- Availability:
- Ships Same Business Day
- Weight:
- 1.42 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 1995 Kawasaki KX125 54mm Bore KA5251
LA SLEEVE
$131.95Revitalize your engine with the LA SLEEVE Cylinder Sleeve KA5251, designed for exceptional durability and performance. This high-quality replacement sleeve ensures a perfect fit, restoring your cylinder's functionality and extending its lifespan...KA5251- SKU:
- KA5251
- Availability:
- Ships Same Business Day
- Weight:
- 0.68 LBS
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- AC
- COLOR/FINISH:
- CHROME
- UNITS:
- EACH
- BORE SIZE METRIC:
- 54.00 MM
- PRODUCT NAME:
- CYLINDER SLEEVE
$131.95 -
LA Sleeve Cylinder Sleeve 66.4mm Bore Kawasaki KX250 1995 KA5253
LA SLEEVE
$148.95Revitalize your engine with the LA SLEEVE Cylinder Sleeve KA5253, engineered for superior performance and durability. Designed to restore the functionality of worn-out cylinders, this high-quality replacement sleeve ensures optimal fit and reliable...KA5253- SKU:
- KA5253
- 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
$148.95 -
LA Sleeve Cylinder Sleeve for Kawasaki KX100 1995-1997 KA5263
LA SLEEVE
$117.95Revitalize your engine with the LA SLEEVE Cylinder Sleeve KA5263, designed to restore performance and extend the life of your cylinders. Crafted from high-quality materials, this replacement sleeve ensures a perfect fit and optimal functionality, making...KA5263- SKU:
- KA5263
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- COLOR/FINISH:
- CHROME
- RIDING STYLE:
- OFF-ROAD
- BORE SIZE METRIC:
- 52.50 MM
- PRODUCT NAME:
- CYLINDER SLEEVE
- UNITS:
- EACH
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
- TYPE:
- AC
$117.95 -
LA Sleeve Cylinder Sleeve for Kawasaki KX80 1995-1997 48mm Bore KA5316
LA SLEEVE
$117.95Revitalize your engine with the LA SLEEVE Cylinder Sleeve KA5316, designed for exceptional performance and durability. This high-quality replacement sleeve is engineered to restore the functionality of old cylinders, ensuring your engine runs smoothly...KA5316- SKU:
- KA5316
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- BORE SIZE METRIC:
- 48.00 MM
- UNITS:
- EACH
- COLOR/FINISH:
- CHROME
- RIDING STYLE:
- OFF-ROAD
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
- PRODUCT NAME:
- CYLINDER SLEEVE
- TYPE:
- AC
$117.95 -
LA Sleeve Cylinder Sleeve 66.4mm 1994 Kawasaki KX80 KA5321
LA SLEEVE
$148.95Revitalize your engine with the LA SLEEVE Cylinder Sleeve KA5321, designed to restore performance and extend the life of your cylinders. Crafted with precision, this quality replacement sleeve ensures a perfect fit and optimal functionality, making it an...KA5321- SKU:
- KA5321
- Availability:
- Ships Same Business Day
- Weight:
- 1.42 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 1998-1999 Kawasaki KX250 66.40mm Bore KA5350
LA SLEEVE
$148.95Revitalize your engine with the LA SLEEVE Cylinder Sleeve KA5350, expertly designed to restore the performance of worn-out cylinders. Engineered for precision and durability, this replacement sleeve ensures a perfect fit and optimal functionality...KA5350- SKU:
- KA5350
- Availability:
- Ships Same Business Day
- Weight:
- 1.42 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:
- 66.40 MM
$148.95Qty in Cart: 0Quantity:Price:$148.95Subtotal:
