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!
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- Qty in Cart
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- Price
- Subtotal
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Cylinder Works Cylinder for KTM 250 SX-F 2013-2015 250 XC-F 2013-2015 250 XCF-W 2014 50004
CYLINDER WORKS
$526.95Enhance your engine's performance with the Cylinder Works Standard 50004. Designed for seamless installation, these direct bolt-on cylinders offer a perfect fit without the need for re-plating. Crafted with Nickel Silicon Carbide plating, they ensure...09310492- SKU:
- 09310492
- Availability:
- Ships Same Business Day
- Weight:
- 2.95 LBS
- RIDING STYLE:
- OFF-ROAD
- STYLE:
- STANDARD
- ENGINE TYPE:
- 4-CYCLE
- PRODUCT NAME:
- CYLINDER
- BORE SIZE METRIC:
- 77.95 MM
- CYLINDER DIAMETER:
- 78,00 MM
- CYLINDER DIAMETER METRIC:
- 78.00 MM
- UNITS:
- EACH
$526.95 -
Cylinder Works Standard Bore Cylinder for Yamaha YZ450F 2010-2017 20005
CYLINDER WORKS
$547.95Upgrade your YZ450F with our premium Cylinder Works Cylinder, designed for seamless installation and exceptional performance. Crafted with precision, this cylinder offers the reliability and durability you expect, enhancing your riding experience without...09310396- SKU:
- 09310396
- Availability:
- Ships Same Business Day
- Weight:
- 3.35 LBS
- BORE SIZE METRIC:
- 97.00 MM
- CYLINDER DIAMETER:
- 97,00 MM
- ENGINE TYPE:
- 4-CYCLE
- PRODUCT NAME:
- CYLINDER
- RIDING STYLE:
- OFF-ROAD
- STYLE:
- STANDARD
- CYLINDER DIAMETER METRIC:
- 97.00 MM
- UNITS:
- EACH
$547.95 -
Cylinder Works Standard Bore Cylinder Kawasaki KX250F 2009 30004
CYLINDER WORKS
$421.95Enhance your KX250F's performance with our premium Cylinder Works Standard Cylinder. Designed for easy installation, this cylinder provides a perfect fit and mimics the original equipment manufacturer (OEM) specifications, ensuring a seamless upgrade...09310398- SKU:
- 09310398
- Availability:
- Ships Same Business Day
- Weight:
- 2.30 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- BORE SIZE METRIC:
- 77.00 MM
- CYLINDER DIAMETER:
- 77,00 MM
- ENGINE TYPE:
- 4-CYCLE
- PRODUCT NAME:
- CYLINDER
- CYLINDER DIAMETER METRIC:
- 77.00 MM
- STYLE:
- STANDARD
$421.95 -
Cylinder Works Standard Bore Cylinder Kawasaki KX250F 2010 30005
CYLINDER WORKS
$434.95Experience unmatched performance with the Cylinder Works Standard Cylinder for the KX250F 2010. Designed for easy installation, this direct bolt-on replacement offers the durability and efficiency you expect from top-tier components. With its advanced...09310399- SKU:
- 09310399
- Availability:
- Ships Same Business Day
- Weight:
- 2.50 LBS
- COMPRESSION RATIO IMPERIAL:
- 13.2:1
- CYLINDER DIAMETER METRIC:
- 77.00 MM
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- DISPLACEMENT:
- 249 CC
- ENGINE TYPE:
- 4-CYCLE
- STYLE:
- STANDARD
- BORE SIZE METRIC:
- 77.00 MM
- CYLINDER BORE COATING:
- NICKEL-SILICON CARBIDE
- CYLINDER DIAMETER:
- 77,00 MM
- PRODUCT NAME:
- CYLINDER
$434.95 -
Cylinder Works Standard Bore Cylinder Kawasaki KX250F 2011-2012 30006
CYLINDER WORKS
$421.95Upgrade your KX250F with our high-quality Cylinder Works Cylinder, designed for seamless installation and exceptional performance. Engineered to match OEM specifications, this cylinder offers durability and reliability without the need for re-plating...09310400- SKU:
- 09310400
- Availability:
- Ships Same Business Day
- Weight:
- 2.40 LBS
- STYLE:
- STANDARD
- BORE SIZE METRIC:
- 77.00 MM
- ENGINE TYPE:
- 4-CYCLE
- CYLINDER DIAMETER METRIC:
- 77.00 MM
- UNITS:
- EACH
- CYLINDER DIAMETER:
- 77,00 MM
- PRODUCT NAME:
- CYLINDER
- RIDING STYLE:
- OFF-ROAD
$421.95 -
Cylinder Works Standard Bore Cylinder for KTM 350 SX-F 2011-2012 50001
CYLINDER WORKS
$526.95Upgrade your ride with the CYLINDER WORKS Standard Cylinder for the KTM350 SX-F. Designed for effortless installation, this high-performance cylinder combines durability and precision to enhance your bike's power and efficiency. With its OEM-like...09310403- SKU:
- 09310403
- Availability:
- Ships Same Business Day
- Weight:
- 2.50 LBS
- BORE SIZE METRIC:
- 88.00 MM
- ENGINE TYPE:
- 4-CYCLE
- PRODUCT NAME:
- CYLINDER
- UNITS:
- EACH
- RIDING STYLE:
- OFF-ROAD
- STYLE:
- STANDARD
$526.95 -
Cylinder Works Standard Bore Cylinder KTM 250 SX-F 2005-2012 50002
CYLINDER WORKS
$526.95Upgrade your ride with the CYLINDER WORKS Cylinder for KTM250 and 50002, designed for seamless installation and optimal performance. Crafted in the U.S.A., this cylinder combines durability with precision engineering, ensuring your bike runs like new...09310404- SKU:
- 09310404
- Availability:
- Ships Same Business Day
- Weight:
- 2.70 LBS
- CYLINDER DIAMETER:
- 76,00 MM
- ENGINE TYPE:
- 4-CYCLE
- PRODUCT NAME:
- CYLINDER
- BORE SIZE METRIC:
- 76.00 MM
- CYLINDER DIAMETER METRIC:
- 76.00 MM
- STYLE:
- STANDARD
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
$526.95 -
Cylinder Works 76mm Standard Bore Cylinder Kit for 2005-2012 KTM 250 SX-F 50002-K01
CYLINDER WORKS
$895.95Experience unmatched performance and reliability with the CYLINDER WORKS Cylinder Kit. Designed as a direct bolt-on replacement, these kits offer a hassle-free installation while maintaining the high standards of OEM quality. Each kit is engineered for...09310408- SKU:
- 09310408
- Availability:
- Ships Same Business Day
- Weight:
- 3.50 LBS
- COMPRESSION RATIO IMPERIAL:
- 12.8:1
- CYLINDER DIAMETER METRIC:
- 76.00 MM
- PRODUCT NAME:
- CYLINDER KIT
- CYLINDER DIAMETER:
- 76,00 MM
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- CYLINDER BORE COATING:
- NICKEL-SILICON CARBIDE
- STYLE:
- STANDARD
- DISPLACEMENT:
- 249 CC
- ENGINE TYPE:
- 4-CYCLE
$895.95 -
Cylinder Works Honda CRF450X 2005-2017 Standard Bore Cylinder Kit 10008-K01
CYLINDER WORKS
$664.95Upgrade your engine with the Cylinder Works Cylinder Kit, designed for seamless installation and optimal performance. This high-quality kit features components that mirror OEM specifications, ensuring a perfect fit and exceptional durability. With...09310274- SKU:
- 09310274
- Availability:
- Ships Same Business Day
- Weight:
- 4.65 LBS
- CYLINDER DIAMETER METRIC:
- 96.00 MM
- DISPLACEMENT:
- 449 CC
- PRODUCT NAME:
- CYLINDER KIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- CYLINDER BORE COATING:
- NICKEL-SILICON CARBIDE
- CYLINDER DIAMETER:
- 96,00 MM
- STYLE:
- STANDARD
- COMPRESSION RATIO IMPERIAL:
- 12.1:1
- ENGINE TYPE:
- 4-CYCLE
$664.95 -
Cylinder Works Standard Bore Cylinder Kit for 2005-2007 Yamaha YZ250F 20002-K02
CYLINDER WORKS
$723.95Upgrade your engine with the CYLINDER WORKS Cylinder Kit, designed for seamless installation and optimal performance. This kit features high-quality components that mirror OEM specifications, ensuring a reliable fit and enhanced durability. Experience...09310279- SKU:
- 09310279
- Availability:
- Ships Same Business Day
- Weight:
- 3.95 LBS
- CYLINDER DIAMETER:
- 77,00 MM
- DISPLACEMENT:
- 249 CC
- ENGINE TYPE:
- 4-CYCLE
- PRODUCT NAME:
- CYLINDER KIT
- CYLINDER BORE COATING:
- NICKEL-SILICON CARBIDE
- COMPRESSION RATIO IMPERIAL:
- 12.5:1
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- CYLINDER DIAMETER METRIC:
- 77.00 MM
- STYLE:
- STANDARD
$723.95 -
Cylinder Works Yamaha YZ450F 2003-2005 WR450F 2003-2006 Cylinder Kit 20001-K02
CYLINDER WORKS
$750.95Upgrade your engine with the CYLINDER WORKS Cylinder Kit, designed for seamless installation and optimal performance. This kit provides all the essential components, ensuring a perfect fit and enhanced durability, making it an excellent choice for both...09310280- SKU:
- 09310280
- Availability:
- Ships Same Business Day
- Weight:
- 4.33 LBS
- COMPRESSION RATIO IMPERIAL:
- 12.5:1
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- CYLINDER BORE COATING:
- NICKEL-SILICON CARBIDE
- CYLINDER DIAMETER METRIC:
- 95.00 MM
- PRODUCT NAME:
- CYLINDER KIT
- CYLINDER DIAMETER:
- 95,00 MM
- DISPLACEMENT:
- 449 CC
- ENGINE TYPE:
- 4-CYCLE
- STYLE:
- STANDARD
$750.95 -
Cylinder Works Honda CRF450R 2002-2008 High Compression Cylinder Kit 10002-K01HC
CYLINDER WORKS
$704.95Elevate your engine's performance with the CYLINDER WORKS High Compression Cylinder Kit. Designed for seamless installation, this kit combines OEM-like aesthetics with advanced engineering for enhanced durability and efficiency. Experience a boost in...09310291- SKU:
- 09310291
- Availability:
- Ships Same Business Day
- Weight:
- 4.80 LBS
- COMPRESSION RATIO IMPERIAL:
- 12.5:1
- CYLINDER BORE COATING:
- NICKEL-SILICON CARBIDE
- CYLINDER DIAMETER:
- 96,00 MM
- UNITS:
- KIT
- STYLE:
- HIGH COMPRESSION
- DISPLACEMENT:
- 449 CC
- ENGINE TYPE:
- 4-CYCLE
- PRODUCT NAME:
- CYLINDER KIT
- CYLINDER DIAMETER METRIC:
- 96.00 MM
- RIDING STYLE:
- OFF-ROAD
$704.95 -
Cylinder Works Standard Bore Cylinder Honda CRF150R 2007-2018 10004
CYLINDER WORKS
$354.95Experience unmatched performance and reliability with the CYLINDER WORKS Cylinder Standard 10004. Designed for seamless installation, these cylinders are engineered to meet or exceed OEM specifications, offering a perfect fit and exceptional durability...09310163- SKU:
- 09310163
- Availability:
- Ships Same Business Day
- Weight:
- 2.35 LBS
- RIDING STYLE:
- OFF-ROAD
- BORE SIZE METRIC:
- 66.00 MM
- UNITS:
- EACH
- CYLINDER DIAMETER:
- 66,00 MM
- ENGINE TYPE:
- 4-CYCLE
- PRODUCT NAME:
- CYLINDER
- CYLINDER DIAMETER METRIC:
- 66.00 MM
- STYLE:
- STANDARD
$354.95 -
Cylinder Works Big Bore Cylinder Kit 269cc 2004-2008 Kawasaki KX250F 31001-K01
CYLINDER WORKS
$790.95Elevate your engine's performance with the CYLINDER WORKS Big Bore Cylinder Kit. Designed for seamless installation, this kit offers a perfect blend of durability and efficiency, ensuring your ride delivers power and smooth operation. Each component is...09310120- SKU:
- 09310120
- Availability:
- Ships Same Business Day
- Weight:
- 2.95 LBS
- COMPRESSION RATIO IMPERIAL:
- 13.2:1
- CYLINDER DIAMETER METRIC:
- 80.00 MM
- OVERBORE METRIC:
- +3.00 MM
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- CYLINDER BORE COATING:
- NICKEL-SILICON CARBIDE
- CYLINDER DIAMETER:
- 80,00 MM
- DISPLACEMENT:
- 269 CC
- STYLE:
- BIG BORE
- ENGINE TYPE:
- 4-CYCLE
- PRODUCT NAME:
- CYLINDER KIT
$790.95 -
Cylinder Works Standard Bore Cylinder for Honda CRF250R 2004-2009 10001
CYLINDER WORKS
$367.95Experience unmatched performance with the CYLINDER WORKS Standard 10001. This ready-to-install, direct bolt-on cylinder is designed for seamless integration, ensuring your engine runs smoothly without the need for re-plating. Crafted with precision in...09310128- SKU:
- 09310128
- Availability:
- Ships Same Business Day
- Weight:
- 2.55 LBS
- CYLINDER DIAMETER:
- 78,00 MM
- OVERBORE METRIC:
- STANDARD
- STYLE:
- STANDARD
- DISPLACEMENT:
- 249 CC
- ENGINE TYPE:
- 4-CYCLE
- COMPRESSION RATIO IMPERIAL:
- 12.9:1
- CYLINDER DIAMETER METRIC:
- 78.00 MM
- UNITS:
- EACH
- CYLINDER BORE COATING:
- NICKEL-SILICON CARBIDE
- PRODUCT NAME:
- CYLINDER
- RIDING STYLE:
- OFF-ROAD
$367.95 -
Cylinder Works High Compression Cylinder Kit 2003-2005 Honda CRF250R 10007-K02HC
CYLINDER WORKS
$636.95Upgrade your engine's performance with our High Compression Cylinder Kit, designed for effortless installation and optimal efficiency. This ready-to-install, direct bolt-on solution mimics the original equipment manufacturer (OEM) cylinders while...09310584- SKU:
- 09310584
- Availability:
- Ships Same Business Day
- Weight:
- 3.45 LBS
- COMPRESSION RATIO IMPERIAL:
- 14.1:1
- DISPLACEMENT:
- 249 CC
- ENGINE TYPE:
- 4-CYCLE
- PRODUCT NAME:
- CYLINDER KIT
- STYLE:
- HIGH COMPRESSION
- CYLINDER BORE COATING:
- NICKEL-SILICON CARBIDE
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- CYLINDER DIAMETER:
- 76,80 MM
- CYLINDER DIAMETER METRIC:
- 76.80 MM
$636.95 -
Cylinder Works Standard Bore Cylinder Kit Kawasaki KX250F 2015-2016 30006-K02
CYLINDER WORKS
$679.95Upgrade your engine with the CYLINDER WORKS Cylinder Kit, designed for seamless installation and optimal performance. This high-quality kit features components that mirror OEM specifications, ensuring reliability and durability for your motorcycle. With...09310592- SKU:
- 09310592
- Availability:
- Ships Same Business Day
- Weight:
- 3.35 LBS
- CYLINDER BORE COATING:
- NICKEL-SILICON CARBIDE
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- COMPRESSION RATIO IMPERIAL:
- 13.8:1
- CYLINDER DIAMETER:
- 77,00 MM
- DISPLACEMENT:
- 249 CC
- ENGINE TYPE:
- 4-CYCLE
- PRODUCT NAME:
- CYLINDER KIT
- CYLINDER DIAMETER METRIC:
- 77.00 MM
- STYLE:
- STANDARD
$679.95 -
Cylinder Works Standard Bore Cylinder Kit for Kawasaki KX450F 2009-2012 30011-K01
CYLINDER WORKS
$677.95Upgrade your engine with the CYLINDER WORKS Cylinder Kit, designed for easy installation and optimal performance. This complete kit includes everything you need for a seamless replacement, ensuring your engine runs smoothly and efficiently. With...09310596- SKU:
- 09310596
- Availability:
- Ships Same Business Day
- Weight:
- 4.25 LBS
- CYLINDER BORE COATING:
- NICKEL-SILICON CARBIDE
- CYLINDER DIAMETER:
- 96,00 MM
- STYLE:
- STANDARD
- UNITS:
- KIT
- COMPRESSION RATIO IMPERIAL:
- 13.2:1
- ENGINE TYPE:
- 4-CYCLE
- PRODUCT NAME:
- CYLINDER KIT
- CYLINDER DIAMETER METRIC:
- 96.00 MM
- DISPLACEMENT:
- 449 CC
- RIDING STYLE:
- OFF-ROAD
$677.95 -
Cylinder Works Kawasaki KX450F 2015 Standard Bore Cylinder Kit 30011-K03
CYLINDER WORKS
$690.95Upgrade your engine with the Cylinder Works Cylinder Kit, designed for seamless installation and superior performance. This ready-to-install kit features OEM-like aesthetics and comes equipped with high-quality Vertex pistons for enhanced durability and...09310600- SKU:
- 09310600
- Availability:
- Ships Same Business Day
- Weight:
- 4.20 LBS
- DISPLACEMENT:
- 449 CC
- ENGINE TYPE:
- 4-CYCLE
- PRODUCT NAME:
- CYLINDER KIT
- STYLE:
- STANDARD
- CYLINDER DIAMETER METRIC:
- 96.00 MM
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- COMPRESSION RATIO IMPERIAL:
- 12.8:1
- CYLINDER BORE COATING:
- NICKEL-SILICON CARBIDE
- CYLINDER DIAMETER:
- 96,00 MM
$690.95 -
Cylinder Works Standard Bore Cylinder Kit 77mm Bore Kawasaki KX250F 2011-2014 30006-K01
CYLINDER WORKS
$666.95Upgrade your engine with the CYLINDER WORKS Cylinder Standard 30006-K01, designed for seamless installation and optimal performance. These high-quality, ready-to-install cylinders mirror OEM specifications while enhancing durability and reducing engine...09310423- SKU:
- 09310423
- Availability:
- Ships Same Business Day
- Weight:
- 3.25 LBS
- STYLE:
- STANDARD
- COMPRESSION RATIO IMPERIAL:
- 13.5:1
- CYLINDER BORE COATING:
- NICKEL-SILICON CARBIDE
- CYLINDER DIAMETER:
- 77,00 MM
- PRODUCT NAME:
- CYLINDER
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- CYLINDER DIAMETER METRIC:
- 77.00 MM
- DISPLACEMENT:
- 249 CC
- ENGINE TYPE:
- 4-CYCLE
$666.95
