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 for Polaris RZR 900 2017-2020 CW60007
CYLINDER WORKS
$644.95CYLINDER WORKS Cylinder Standard CW60007 Experience unparalleled performance with the CYLINDER WORKS Standard CW60007, a ready-to-install, direct bolt-on cylinder designed to fit seamlessly into your engine setup. Crafted with precision, this cylinder...09311023- SKU:
- 09311023
- Availability:
- Ships Same Business Day
- Weight:
- 7.15 LBS
- UNITS:
- EACH
- CYLINDER DIAMETER METRIC:
- 93.00 MM
- ENGINE TYPE:
- 4-CYCLE
- RIDING STYLE:
- UTV
- STYLE:
- STANDARD
- CYLINDER DIAMETER:
- 93,00 MM
- PRODUCT NAME:
- CYLINDER
$644.95 -
Cylinder Works Yamaha WR250F 2018-2019 High Compression Cylinder Kit 20010-K02HC
CYLINDER WORKS
$694.95CYLINDER WORKS Big Bore Cylinder Kit 20010-K02HC Elevate your engine's performance with the CYLINDER WORKS Big Bore Cylinder Kit. Designed for seamless installation, this kit combines durability with top-notch engineering, ensuring your bike runs...09310709- SKU:
- 09310709
- Availability:
- Ships Same Business Day
- Weight:
- 3.20 LBS
- CYLINDER DIAMETER METRIC:
- 77.00 MM
- CYLINDER DIAMETER:
- 77,00 MM
- PRODUCT NAME:
- CYLINDER KIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- BORE SIZE METRIC:
- 77.00 MM
- COMPRESSION RATIO IMPERIAL:
- 14.2:1
- STYLE:
- STANDARD
- ENGINE TYPE:
- 4-CYCLE
$694.95 -
Cylinder Works Standard Bore Cylinder Kit for 2007-2008 Honda CRF450R 10002-K02
CYLINDER WORKS
$603.95CYLINDER WORKS Cylinder Kit Standard Honda 10002-K02 Elevate your motorcycle's performance with the CYLINDER WORKS Cylinder Kit, designed for a seamless fit with no need for re-plating. This high-quality kit not only mirrors the original equipment...09310839- SKU:
- 09310839
- Availability:
- Ships Same Business Day
- Weight:
- 4.70 LBS
- CYLINDER BORE COATING:
- NICKEL-SILICON CARBIDE
- CYLINDER DIAMETER:
- 96,00 MM
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- CYLINDER DIAMETER METRIC:
- 96.00 MM
- OVERBORE METRIC:
- STANDARD
- STYLE:
- STANDARD
- DISPLACEMENT:
- 449 CC
- ENGINE TYPE:
- 4-CYCLE
- PRODUCT NAME:
- CYLINDER KIT
- COMPRESSION RATIO IMPERIAL:
- 12.1:1
$603.95 -
Cylinder Works Standard Bore Cylinder Kit for Honda CRF450R 2019 10010-K02
CYLINDER WORKS
$677.95CYLINDER WORKS Cylinder Kit Standard Honda 10010-K02 Elevate your engine's performance with the Cylinder Works Cylinder Kit for Honda. This ready-to-install, direct bolt-on solution ensures a seamless fit and enhanced longevity without the need for...09310840- SKU:
- 09310840
- Availability:
- Ships Same Business Day
- Weight:
- 4.10 LBS
- CYLINDER BORE COATING:
- NICKEL-SILICON CARBIDE
- CYLINDER DIAMETER:
- 96,00 MM
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- CYLINDER DIAMETER METRIC:
- 96.00 MM
- STYLE:
- STANDARD
- COMPRESSION RATIO IMPERIAL:
- 13.5:1
- DISPLACEMENT:
- 449 CC
- ENGINE TYPE:
- 4-CYCLE
- PRODUCT NAME:
- CYLINDER KIT
$677.95Qty in Cart: 0Quantity:Price:$677.95Subtotal: -
Cylinder Works Big Bore Cylinder Kit for Honda CRF450R 2007-2019 10002-K02HC
CYLINDER WORKS
$639.95CYLINDER WORKS Big Bore Cylinder Kit for Honda 10002-K02HC Enhance your Honda's performance with the CYLINDER WORKS Big Bore Cylinder Kit. This ready-to-install kit is engineered for seamless integration, ensuring you get maximum power without the hassle...09310841- SKU:
- 09310841
- Availability:
- Ships Same Business Day
- Weight:
- 4.70 LBS
- CYLINDER BORE COATING:
- NICKEL-SILICON CARBIDE
- CYLINDER DIAMETER:
- 96,00 MM
- UNITS:
- KIT
- COMPRESSION RATIO IMPERIAL:
- 12.5:1
- DISPLACEMENT:
- 449 CC
- ENGINE TYPE:
- 4-CYCLE
- PRODUCT NAME:
- CYLINDER KIT
- STYLE:
- BIG BORE
- CYLINDER DIAMETER METRIC:
- 96.00 MM
- RIDING STYLE:
- OFF-ROAD
$639.95 -
Cylinder Works Standard Bore Cylinder Kit Arctic Cat 400 DVX 2004-2008 40001-K02
CYLINDER WORKS
$664.95CYLINDER WORKS Cylinder Kit Standard Arctic Cat 40001-K02 Upgrade your Arctic Cat with the Cylinder Works Cylinder Kit, designed for seamless installation and optimal performance. This kit includes everything you need for a hassle-free upgrade, ensuring...09310842- SKU:
- 09310842
- Availability:
- Ships Same Business Day
- Weight:
- 5.15 LBS
- CYLINDER BORE COATING:
- NICKEL-SILICON CARBIDE
- STYLE:
- STANDARD
- CYLINDER DIAMETER:
- 90,00 MM
- PRODUCT NAME:
- CYLINDER KIT
- UNITS:
- KIT
- COMPRESSION RATIO IMPERIAL:
- 11.3:1
- DISPLACEMENT:
- 400 CC
- CYLINDER DIAMETER METRIC:
- 90.00 MM
- ENGINE TYPE:
- 4-CYCLE
- RIDING STYLE:
- ATV
$664.95 -
Cylinder Works Standard Bore High Compression Cylinder Kit for 2004-2008 Arctic Cat 400 DVX 40001-K02HC
CYLINDER WORKS
$663.95CYLINDER WORKS Big Bore Cylinder Kit 40001-K02HC Enhance your engine's performance with the CYLINDER WORKS Big Bore Cylinder Kit. This ready-to-install kit is designed for seamless integration, offering a perfect fit that mirrors OEM specifications. With...09310843- SKU:
- 09310843
- Availability:
- Ships Same Business Day
- Weight:
- 5.15 LBS
- DISPLACEMENT:
- 400 CC
- ENGINE TYPE:
- 4-CYCLE
- CYLINDER DIAMETER METRIC:
- 90.00 MM
- RIDING STYLE:
- ATV
- COMPRESSION RATIO IMPERIAL:
- 13.5:1
- CYLINDER BORE COATING:
- NICKEL-SILICON CARBIDE
- CYLINDER DIAMETER:
- 90,00 MM
- PRODUCT NAME:
- CYLINDER KIT
- STYLE:
- BIG BORE
- UNITS:
- KIT
$663.95 -
Cylinder Works Big Bore Cylinder Kit for Polaris General 1000 2017-2019 61006-K01
CYLINDER WORKS
$1,309.95CYLINDER WORKS Big Bore Cylinder Kit for Polaris 61006-K01 Enhance your Polaris performance with the CYLINDER WORKS Big Bore Cylinder Kit. Designed for easy installation, this kit offers a seamless fit without the need for re-plating, ensuring your...09310844- SKU:
- 09310844
- Availability:
- Ships Same Business Day
- Weight:
- 9.65 LBS
- DISPLACEMENT:
- 1110 CC
- RIDING STYLE:
- UTV
- CYLINDER BORE COATING:
- NICKEL-SILICON CARBIDE
- PRODUCT NAME:
- CYLINDER KIT
- STYLE:
- BIG BORE
- UNITS:
- KIT
- COMPRESSION RATIO IMPERIAL:
- 11.0:1
- CYLINDER DIAMETER:
- 98,00 MM
- CYLINDER DIAMETER METRIC:
- 98.00 MM
- ENGINE TYPE:
- 4-CYCLE
$1,309.95Qty in Cart: 0Quantity:Price:$1,309.95Subtotal: -
Cylinder Works Standard Bore Cylinder Kit for 2018-2019 Honda CRF250R CW10011K01
CYLINDER WORKS
$576.95CYLINDER WORKS Cylinder Kit Standard Honda CW10011K01 Upgrade your Honda's performance with the Cylinder Works Cylinder Kit, designed for seamless installation and optimal functionality. This kit features high-quality components that mirror OEM...09310845- SKU:
- 09310845
- Availability:
- Ships Same Business Day
- Weight:
- 3.45 LBS
- DISPLACEMENT:
- 249 CC
- ENGINE TYPE:
- 4-CYCLE
- CYLINDER DIAMETER:
- 79,00 MM
- STYLE:
- STANDARD
- COMPRESSION RATIO IMPERIAL:
- 13.9:1
- CYLINDER DIAMETER METRIC:
- 79.00 MM
- RIDING STYLE:
- OFF-ROAD
- CYLINDER BORE COATING:
- NICKEL-SILICON CARBIDE
- PRODUCT NAME:
- CYLINDER KIT
- UNITS:
- KIT
$576.95 -
Cylinder Works High Compression Cylinder Kit Honda CRF250R 2018-2019 CW10011K01HC
CYLINDER WORKS
$615.95CYLINDER WORKS Cylinder Kit Big Bore High Compression CW10011K01HC Elevate your engine's performance with the CYLINDER WORKS Big Bore Cylinder Kit. Designed for easy installation, this high-compression cylinder kit offers a seamless fit without the need...09310846- SKU:
- 09310846
- Availability:
- Ships Same Business Day
- Weight:
- 3.40 LBS
- DISPLACEMENT:
- 249 CC
- ENGINE TYPE:
- 4-CYCLE
- PRODUCT NAME:
- CYLINDER KIT
- CYLINDER BORE COATING:
- NICKEL-SILICON CARBIDE
- STYLE:
- BIG BORE
- CYLINDER DIAMETER METRIC:
- 79.00 MM
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- COMPRESSION RATIO IMPERIAL:
- 14.6:1
- CYLINDER DIAMETER:
- 79,00 MM
$615.95 -
Cylinder Works Big Bore Cylinder Kit Honda CRF250R 2018-2021 CRF250RX 2019-2021 CW11011K01
CYLINDER WORKS
$729.95CYLINDER WORKS Big Bore Cylinder Kit for Honda CW11011K01 Enhance your Honda's performance with the CYLINDER WORKS Big Bore Cylinder Kit. Designed for effortless installation, this kit provides a powerful upgrade without the need for complex machining...09310847- SKU:
- 09310847
- Availability:
- Ships Same Business Day
- Weight:
- 3.15 LBS
- ENGINE TYPE:
- 4-CYCLE
- PRODUCT NAME:
- CYLINDER KIT
- STYLE:
- BIG BORE
- DISPLACEMENT:
- 270 CC
- CYLINDER BORE COATING:
- NICKEL-SILICON CARBIDE
- CYLINDER DIAMETER:
- 82,00 MM
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- COMPRESSION RATIO IMPERIAL:
- 13.9:1
- CYLINDER DIAMETER METRIC:
- 82.00 MM
$729.95 -
Cylinder Works Standard Bore Cylinder Yamaha YZ450F 2018-2019 CW20012
CYLINDER WORKS
$427.95CYLINDER WORKS Cylinder Standard Yamaha CW20012 Upgrade your Yamaha with the Cylinder Works Standard Cylinder CW20012, designed for easy installation and optimal performance. This high-quality, direct bolt-on cylinder mirrors the specifications of OEM...09310848- SKU:
- 09310848
- Availability:
- Ships Same Business Day
- Weight:
- 3.30 LBS
- PRODUCT NAME:
- CYLINDER
- ENGINE TYPE:
- 4-STROKE
- UNITS:
- EACH
- CYLINDER BORE COATING:
- NICKEL-SILICON CARBIDE
- RIDING STYLE:
- OFF-ROAD
- STYLE:
- STANDARD
$427.95 -
Cylinder Works Standard Bore Cylinder Kit Yamaha YZ450F 2018-2019 CW20012K01
CYLINDER WORKS
$730.95CYLINDER WORKS Cylinder Kit Standard Yamaha CW20012K01 Upgrade your Yamaha with the Cylinder Works Cylinder Kit, designed for seamless installation and optimal performance. This ready-to-install kit features high-quality components that ensure durability...09310849- SKU:
- 09310849
- Availability:
- Ships Same Business Day
- Weight:
- 4.55 LBS
- COMPRESSION RATIO IMPERIAL:
- 12.8:1
- CYLINDER DIAMETER:
- 97,00 MM
- DISPLACEMENT:
- 449 CC
- ENGINE TYPE:
- 4-CYCLE
- PRODUCT NAME:
- CYLINDER KIT
- RIDING STYLE:
- OFF-ROAD
- CYLINDER BORE COATING:
- NICKEL-SILICON CARBIDE
- CYLINDER DIAMETER METRIC:
- 97.00 MM
- STYLE:
- STANDARD
- UNITS:
- KIT
$730.95 -
Cylinder Works 2019-2020 Yamaha WR 450 F High Compression Big Bore Cylinder Kit CW20012K01HC
CYLINDER WORKS
$742.95CYLINDER WORKS Big Bore High Compression Cylinder Kit CW20012K01HC Elevate your engine's performance with the CYLINDER WORKS Big Bore High Compression Cylinder Kit. Designed for seamless installation, this kit enhances power and efficiency while...09310850- SKU:
- 09310850
- Availability:
- Ships Same Business Day
- Weight:
- 4.50 LBS
- COMPRESSION RATIO IMPERIAL:
- 13.8:1
- CYLINDER BORE COATING:
- NICKEL-SILICON CARBIDE
- DISPLACEMENT:
- 449 CC
- PRODUCT NAME:
- CYLINDER KIT
- RIDING STYLE:
- OFF-ROAD
- STYLE:
- BIG BORE
- UNITS:
- KIT
- CYLINDER DIAMETER:
- 97,00 MM
- CYLINDER DIAMETER METRIC:
- 97.00 MM
- ENGINE TYPE:
- 4-CYCLE
$742.95 -
Cylinder Works Big Bore Cylinder Kit for Yamaha YZ450F 2018-2019 CW21012K01
CYLINDER WORKS
$738.95CYLINDER WORKS Cylinder Kit Big Bore CW21012K01 Upgrade your engine with the CYLINDER WORKS Big Bore Cylinder Kit, designed for effortless installation and superior performance. This kit features high-quality components that not only enhance power output...09310851- SKU:
- 09310851
- Availability:
- Ships Same Business Day
- Weight:
- 4.30 LBS
- COMPRESSION RATIO IMPERIAL:
- 12.8:1
- STYLE:
- BIG BORE
- CYLINDER DIAMETER METRIC:
- 99.00 MM
- DISPLACEMENT:
- 470 CC
- ENGINE TYPE:
- 4-CYCLE
- CYLINDER BORE COATING:
- NICKEL-SILICON CARBIDE
- CYLINDER DIAMETER:
- 99,00 MM
- PRODUCT NAME:
- CYLINDER KIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$738.95 -
Cylinder Works Standard Bore Cylinder Kit for Polaris RZR 900 2017-2020 CW60007K02
CYLINDER WORKS
$1,037.95CYLINDER WORKS Cylinder Kit Standard Polaris CW60007K02 Upgrade your Polaris with the Cylinder Works Cylinder Kit, designed for seamless installation and optimal performance. This ready-to-install kit features high-quality components that mirror OEM...09310852- SKU:
- 09310852
- Availability:
- Ships Same Business Day
- Weight:
- 10.10 LBS
- PRODUCT NAME:
- CYLINDER KIT
- CYLINDER DIAMETER:
- 93,00 MM
- DISPLACEMENT:
- 875 CC
- RIDING STYLE:
- UTV
- COMPRESSION RATIO IMPERIAL:
- 10.5:1
- CYLINDER BORE COATING:
- NICKEL-SILICON CARBIDE
- CYLINDER DIAMETER METRIC:
- 93.00 MM
- STYLE:
- STANDARD
- UNITS:
- KIT
- ENGINE TYPE:
- 4-CYCLE
$1,037.95 -
Cylinder Works High Compression Big Bore Cylinder Kit for Polaris RZR 900 2017-2020 CW60007K01HC
CYLINDER WORKS
$1,110.95CYLINDER WORKS High Compression Big Bore Cylinder Kit CW60007K01HC Upgrade your engine with the CYLINDER WORKS High Compression Big Bore Cylinder Kit, designed for optimal performance and reliability. This ready-to-install kit offers a seamless fit with...09310853- SKU:
- 09310853
- Availability:
- Ships Same Business Day
- Weight:
- 10.00 LBS
- CYLINDER BORE COATING:
- NICKEL-SILICON CARBIDE
- CYLINDER DIAMETER METRIC:
- 93.00 MM
- DISPLACEMENT:
- 875 CC
- UNITS:
- KIT
- CYLINDER DIAMETER:
- 93,00 MM
- RIDING STYLE:
- UTV
- COMPRESSION RATIO IMPERIAL:
- 11.5:1
- ENGINE TYPE:
- 4-CYCLE
- PRODUCT NAME:
- CYLINDER KIT
- STYLE:
- BIG BORE
$1,110.95 -
On Sale
Cylinder Works Big Bore Cylinder Kit for Polaris ACE 900 XC 2017-2019 CW61007K01
CYLINDER WORKS
MSRP: $1,231.95Now: $804.00Was: $1,231.95CYLINDER WORKS Big Bore Cylinder Kit CW61007K01 Upgrade your engine with the Cylinder Works Big Bore Cylinder Kit CW61007K01, designed for effortless installation and optimal performance. This high-quality kit offers a perfect fit and enhanced...09310854- SKU:
- 09310854
- Availability:
- Ships Same Business Day
- Weight:
- 9.30 LBS
- COMPRESSION RATIO IMPERIAL:
- 10.5:1
- CYLINDER BORE COATING:
- NICKEL-SILICON CARBIDE
- CYLINDER DIAMETER:
- 98,00 MM
- UNITS:
- KIT
- DISPLACEMENT:
- 975 CC
- ENGINE TYPE:
- 4-CYCLE
- PRODUCT NAME:
- CYLINDER KIT
- STYLE:
- BIG BORE
- CYLINDER DIAMETER METRIC:
- 98.00 MM
- RIDING STYLE:
- UTV
MSRP: $1,231.95Now: $804.00Was: $1,231.95 -
Cylinder Works Standard Bore Cylinder Kit 2016-2017 Honda CRF250R 10007-K03
CYLINDER WORKS
$564.95CYLINDER WORKS Cylinder Kit Standard 10007-K03 Elevate your engine's performance with the CYLINDER WORKS Cylinder Kit Standard 10007-K03. Designed for seamless installation, this kit offers a perfect fit, ensuring optimal functionality without the need...09310674- SKU:
- 09310674
- Availability:
- Ships Same Business Day
- Weight:
- 3.35 LBS
- COMPRESSION RATIO IMPERIAL:
- 13.5:1
- ENGINE TYPE:
- 4-CYCLE
- PRODUCT NAME:
- CYLINDER KIT
- BORE SIZE METRIC:
- 76.80 MM
- CYLINDER BORE COATING:
- NICKEL-SILICON CARBIDE
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- CYLINDER DIAMETER:
- 76,80 MM
- CYLINDER DIAMETER METRIC:
- 76.80 MM
- STYLE:
- STANDARD
$564.95 -
Cylinder Works Standard Bore Cylinder Kit 2016-2018 Suzuki RM-Z250 40004-K03
CYLINDER WORKS
$652.95CYLINDER WORKS Cylinder Kit Standard 40004-K03 Upgrade your engine's performance with the CYLINDER WORKS Cylinder Kit Standard 40004-K03. Designed for easy installation, these direct bolt-on cylinders provide a seamless fit, mimicking the appearance of...09310675- SKU:
- 09310675
- Availability:
- Ships Same Business Day
- Weight:
- 3.20 LBS
- COMPRESSION RATIO IMPERIAL:
- 13.75:1
- 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
- CYLINDER BORE COATING:
- NICKEL-SILICON CARBIDE
$652.95
