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
-
MOOSE RACING Cylinder - Standard MSE20002
MOOSE RACING
$366.95Replace your damaged or worn OEM cylinder, Made from cast aluminum; nickel silicon carbide plated, Precision-machined and honed to OEM stock bore sizes, Extremely durable low-friction bore surface allows for greater heat dissipation, Stock OEM...09310451- SKU:
- 09310451
- Availability:
- Ships Same Business Day
- Weight:
- 2.93 LBS
- ENGINE TYPE:
- 4-CYCLE
- MATERIAL:
- CAST
- PRODUCT NAME:
- CYLINDER
- CYLINDER BORE COATING:
- NICKEL-SILICON CARBIDE
- MATERIAL:
- ALUMINUM
- UNITS:
- EACH
- RIDING STYLE:
- OFF-ROAD
$366.95 -
MOOSE RACING Cylinder - Standard MSE20003
MOOSE RACING
$380.95Replace your damaged or worn OEM cylinder, Made from cast aluminum; nickel silicon carbide plated, Precision-machined and honed to OEM stock bore sizes, Extremely durable low-friction bore surface allows for greater heat dissipation, Stock OEM...09310452- SKU:
- 09310452
- Availability:
- Ships Same Business Day
- Weight:
- 3.45 LBS
- MATERIAL:
- CAST
- PRODUCT NAME:
- CYLINDER
- CYLINDER BORE COATING:
- NICKEL-SILICON CARBIDE
- RIDING STYLE:
- OFF-ROAD
- MATERIAL:
- ALUMINUM
- UNITS:
- EACH
$380.95 -
MOOSE RACING Cylinder - Standard MSECW20013
MOOSE RACING
$364.95Replace your damaged or worn OEM cylinder, Made from cast aluminum; nickel silicon carbide plated, Precision-machined and honed to OEM stock bore sizes, Extremely durable low-friction bore surface allows for greater heat dissipation, Stock OEM...09310968- SKU:
- 09310968
- Availability:
- Ships Same Business Day
- Weight:
- 2.51 LBS
- BORE SIZE METRIC:
- STANDARD
- CYLINDER BORE COATING:
- NICKEL-SILICON CARBIDE
- DISPLACEMENT:
- 250 CC
- MATERIAL:
- ALUMINUM
- COLOR/FINISH:
- GRAY
- ENGINE TYPE:
- 4-CYCLE
- MATERIAL:
- CAST
- CYLINDER DIAMETER METRIC:
- 77.00 MM
- UNITS:
- EACH
- CYLINDER DIAMETER:
- 77,00 MM
- PRODUCT NAME:
- CYLINDER
- RIDING STYLE:
- OFF-ROAD
$364.95 -
MOOSE RACING Cylinder - Standard - CRF250 MSECW10011
MOOSE RACING
$338.95Replace your damaged or worn OEM cylinder, Made from cast aluminum; nickel silicon carbide plated, Precision-machined and honed to OEM stock bore sizes, Extremely durable low-friction bore surface allows for greater heat dissipation, Stock OEM...09310878- SKU:
- 09310878
- Availability:
- Ships Same Business Day
- Weight:
- 2.45 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- MATERIAL:
- ALUMINUM
- MATERIAL:
- CAST
- PRODUCT NAME:
- CYLINDER
- CYLINDER BORE COATING:
- NICKEL-SILICON CARBIDE
$338.95 -
MOOSE RACING Cylinder - Standard MSE20005
MOOSE RACING
$506.95Replace your damaged or worn OEM cylinder, Made from cast aluminum; nickel silicon carbide plated, Precision-machined and honed to OEM stock bore sizes, Extremely durable low-friction bore surface allows for greater heat dissipation, Stock OEM...09310454- SKU:
- 09310454
- Availability:
- Ships Same Business Day
- Weight:
- 3.43 LBS
- CYLINDER BORE COATING:
- NICKEL-SILICON CARBIDE
- MATERIAL:
- ALUMINUM
- ENGINE TYPE:
- 4-CYCLE
- MATERIAL:
- CAST
- UNITS:
- EACH
- PRODUCT NAME:
- CYLINDER
- RIDING STYLE:
- OFF-ROAD
$506.95 -
MOOSE RACING Cylinder - Standard MSE30001
MOOSE RACING
$380.95Replace your damaged or worn OEM cylinder, Made from cast aluminum; nickel silicon carbide plated, Precision-machined and honed to OEM stock bore sizes, Extremely durable low-friction bore surface allows for greater heat dissipation, Stock OEM...09310456- SKU:
- 09310456
- Availability:
- Ships Same Business Day
- Weight:
- 2.48 LBS
- MATERIAL:
- ALUMINUM
- MATERIAL:
- CAST
- UNITS:
- EACH
- CYLINDER BORE COATING:
- NICKEL-SILICON CARBIDE
- PRODUCT NAME:
- CYLINDER
- RIDING STYLE:
- OFF-ROAD
$380.95 -
MOOSE RACING Cylinder - Standard MSE30004
MOOSE RACING
$390.95Replace your damaged or worn OEM cylinder, Made from cast aluminum; nickel silicon carbide plated, Precision-machined and honed to OEM stock bore sizes, Extremely durable low-friction bore surface allows for greater heat dissipation, Stock OEM...09310457- SKU:
- 09310457
- Availability:
- Ships Same Business Day
- Weight:
- 2.45 LBS
- MATERIAL:
- ALUMINUM
- CYLINDER BORE COATING:
- NICKEL-SILICON CARBIDE
- PRODUCT NAME:
- CYLINDER
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- MATERIAL:
- CAST
$390.95Qty in Cart: 0Quantity:Price:$390.95Subtotal: -
MOOSE RACING Cylinder - Standard MSE30006
MOOSE RACING
$390.95Replace your damaged or worn OEM cylinder, Made from cast aluminum; nickel silicon carbide plated, Precision-machined and honed to OEM stock bore sizes, Extremely durable low-friction bore surface allows for greater heat dissipation, Stock OEM...09310459- SKU:
- 09310459
- Availability:
- Ships Same Business Day
- Weight:
- 2.51 LBS
- RIDING STYLE:
- OFF-ROAD
- MATERIAL:
- CAST
- PRODUCT NAME:
- CYLINDER
- CYLINDER BORE COATING:
- NICKEL-SILICON CARBIDE
- MATERIAL:
- ALUMINUM
- UNITS:
- EACH
$390.95 -
MOOSE RACING Cylinder - Standard MSE40001
MOOSE RACING
$407.95Replace your damaged or worn OEM cylinder, Made from cast aluminum; nickel silicon carbide plated, Precision-machined and honed to OEM stock bore sizes, Extremely durable low-friction bore surface allows for greater heat dissipation, Stock OEM...09310460- SKU:
- 09310460
- Availability:
- Ships Same Business Day
- Weight:
- 3.84 LBS
- UNITS:
- EACH
- ENGINE TYPE:
- 4-CYCLE
- MATERIAL:
- CAST
- RIDING STYLE:
- ATV
- RIDING STYLE:
- STREET
- CYLINDER BORE COATING:
- NICKEL-SILICON CARBIDE
- MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- CYLINDER
- RIDING STYLE:
- OFF-ROAD
$407.95 -
MOOSE RACING Cylinder - Standard MSE40004
MOOSE RACING
$414.95Replace your damaged or worn OEM cylinder, Made from cast aluminum; nickel silicon carbide plated, Precision-machined and honed to OEM stock bore sizes, Extremely durable low-friction bore surface allows for greater heat dissipation, Stock OEM...09310463- SKU:
- 09310463
- Availability:
- Ships Same Business Day
- Weight:
- 2.56 LBS
- MATERIAL:
- CAST
- PRODUCT NAME:
- CYLINDER
- CYLINDER BORE COATING:
- NICKEL-SILICON CARBIDE
- RIDING STYLE:
- OFF-ROAD
- MATERIAL:
- ALUMINUM
- UNITS:
- EACH
$414.95 -
MOOSE RACING Cylinder - Standard - FC250 MSE50006
MOOSE RACING
$498.95Replace your damaged or worn OEM cylinder, Made from cast aluminum; nickel silicon carbide plated, Precision-machined and honed to OEM stock bore sizes, Extremely durable low-friction bore surface allows for greater heat dissipation, Stock OEM...09310879- SKU:
- 09310879
- Availability:
- Ships Same Business Day
- Weight:
- 2.55 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- CYLINDER BORE COATING:
- NICKEL-SILICON CARBIDE
- PRODUCT NAME:
- CYLINDER
- MATERIAL:
- ALUMINUM
- MATERIAL:
- CAST
$498.95 -
MOOSE RACING Cylinder - Standard MSE50002
MOOSE RACING
$487.95Replace your damaged or worn OEM cylinder, Made from cast aluminum; nickel silicon carbide plated, Precision-machined and honed to OEM stock bore sizes, Extremely durable low-friction bore surface allows for greater heat dissipation, Stock OEM...09310465- SKU:
- 09310465
- Availability:
- Ships Same Business Day
- Weight:
- 2.65 LBS
- MATERIAL:
- ALUMINUM
- MATERIAL:
- CAST
- PRODUCT NAME:
- CYLINDER
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- CYLINDER BORE COATING:
- NICKEL-SILICON CARBIDE
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
$487.95 -
MOOSE RACING Cylinder - Standard MSECW20014
MOOSE RACING
$390.95Replace your damaged or worn OEM cylinder, Made from cast aluminum; nickel silicon carbide plated, Precision-machined and honed to OEM stock bore sizes, Extremely durable low-friction bore surface allows for greater heat dissipation, Stock OEM...09310969- SKU:
- 09310969
- Availability:
- Ships Same Business Day
- Weight:
- 1.57 LBS
- CYLINDER BORE COATING:
- NICKEL-SILICON CARBIDE
- CYLINDER DIAMETER METRIC:
- 97.00 MM
- DISPLACEMENT:
- 450 CC
- PRODUCT NAME:
- CYLINDER
- RIDING STYLE:
- OFF-ROAD
- CYLINDER DIAMETER:
- 97,00 MM
- BORE SIZE METRIC:
- STANDARD
- COLOR/FINISH:
- GRAY
- ENGINE TYPE:
- 4-CYCLE
- MATERIAL:
- ALUMINUM
- MATERIAL:
- CAST
- UNITS:
- EACH
$390.95 -
LA Sleeve Cylinder Sleeve 54mm Bore Suzuki RM125 2004-2007 FL5532
LA SLEEVE
$127.95Revitalize your engine with the LA SLEEVE Cylinder Sleeve FL5532. Designed for superior performance, this high-quality replacement sleeve ensures a perfect fit and exceptional durability, extending the life of your cylinders. Upgrade your machinery with...09310040- SKU:
- 09310040
- Availability:
- Ships Same Business Day
- Weight:
- 0.61 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- CYLINDER SLEEVE
- BORE SIZE METRIC:
- 54.00 MM
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
- TYPE:
- AC
$127.95 -
LA Sleeve Cylinder Sleeve 45mm Bore 2003-2008 KTM 65 SX FL5550
LA SLEEVE
$117.95Revitalize your engine with the LA SLEEVE Cylinder Sleeve FL5550, designed to restore performance and extend the life of your cylinders. Crafted with precision and durability in mind, this quality replacement sleeve ensures optimal fit and function for...09310042- SKU:
- 09310042
- Availability:
- Ships Same Business Day
- Weight:
- 0.40 LBS
- COLOR/FINISH:
- CHROME
- UNITS:
- EACH
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
- TYPE:
- AC
- BORE SIZE METRIC:
- 45.00 MM
- PRODUCT NAME:
- CYLINDER SLEEVE
- RIDING STYLE:
- OFF-ROAD
$117.95 -
LA Sleeve Cylinder Sleeve 54mm Bore Honda CR125R 1987-1988 H5001
LA SLEEVE
$137.95Revitalize your engine with the LA SLEEVE Cylinder Sleeve H5001, designed for optimal performance and durability. This high-quality replacement sleeve ensures a precise fit and enhances the longevity of your cylinders, making it an essential upgrade for...09310047- SKU:
- 09310047
- Availability:
- Ships Same Business Day
- Weight:
- 1.40 LBS
- COLOR/FINISH:
- CHROME
- UNITS:
- EACH
- PRODUCT NAME:
- CYLINDER SLEEVE
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CS
- BORE SIZE METRIC:
- 54.00 MM
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
$137.95 -
LA Sleeve Cylinder Sleeve for Yamaha YFZ450 2004-2013 YA5495
LA SLEEVE
$127.95Revitalize your engine with the LA SLEEVE Cylinder Sleeve YA5495, designed to restore the performance of worn-out cylinders. Crafted from high-quality materials, this replacement sleeve ensures durability and a perfect fit, making it an essential...09310070- SKU:
- 09310070
- Availability:
- Ships Same Business Day
- Weight:
- 1.59 LBS
- PRODUCT NAME:
- CYLINDER SLEEVE
- RIDING STYLE:
- OFF-ROAD
- COLOR/FINISH:
- ALUMINUM
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- BORE SIZE METRIC:
- 95.00 MM
- CYLINDER BORE COATING:
- CHROME-MOLY ALLOY
- TYPE:
- AC
$127.95 -
On Sale
Cylinder Works Standard Bore Cylinder Kit Kawasaki KX250F 2017-2019 30012-K02
CYLINDER WORKS
MSRP: $704.95Now: $634.46Was: $704.95Upgrade 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 durability and reducing engine noise. Experience the...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
MSRP: $704.95Now: $634.46Was: $704.95 -
On Sale
Cylinder Works Kawasaki KX 250 F 2017-2019 Standard Bore High Compression Cylinder Kit 30012-K02HC
CYLINDER WORKS
MSRP: $773.95Now: $696.56Was: $773.95Enhance 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 benefiting from superior functionality...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
MSRP: $773.95Now: $696.56Was: $773.95 -
LA Sleeve Cylinder Sleeve 66.40mm Bore Suzuki RM250 2003 FL5494
LA SLEEVE
$148.95Revitalize 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 to life with precision engineering...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
$148.95
