Dirt Bike Engine
Dirt Bike Engine Parts at JJ Motorsports
Discover a full range of dirt bike engine components for rebuilding or upgrading your performance from JJ Motorsports. From crankshafts to cylinder heads and piston kits, these precision-engineered components ensure reliable performance. For additional upgrades, check out our full selection of off-road dirt bike parts to keep your engine running at peak efficiency on the track or trails.
Shop trusted brands like Wiseco for forged piston kits and K&N for high-flow oil filters. Explore related categories such as Dirt Bike Air and Fuel for intake upgrades or Dirt Bike Exhaust for complete systems.
Browse our in-stock inventory below with same-day shipping and expert support. Questions? Contact us for fitment advice!
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- Price
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Cylinder Works Standard Bore Cylinder for Polaris RZR 800 2008-2014 60002
CYLINDER WORKS
$588.95Upgrade your engine performance with the CYLINDER WORKS Cylinder Standard 60002. This ready-to-install, direct bolt-on cylinder offers a seamless fit, ensuring you get the durability and reliability you expect from high-quality manufacturing. Crafted in...09310604- SKU:
- 09310604
- Availability:
- Ships Same Business Day
- Weight:
- 7.85 LBS
- CYLINDER DIAMETER:
- 80,00 MM
- RIDING STYLE:
- UTV
- STYLE:
- STANDARD
- ENGINE TYPE:
- 4-CYCLE
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- CYLINDER DIAMETER METRIC:
- 80.00 MM
- PRODUCT NAME:
- CYLINDER
$588.95 -
Cylinder Works Standard Bore Cylinder 93mm 2016 Polaris General 1000 EPS 60003
CYLINDER WORKS
$622.95Upgrade your engine with the CYLINDER WORKS Cylinder Standard 60003, designed for seamless installation and optimal performance. This high-quality cylinder mimics the original equipment manufacturer (OEM) specifications while enhancing durability and...09310605- SKU:
- 09310605
- Availability:
- Ships Same Business Day
- Weight:
- 7.05 LBS
- COMPRESSION RATIO IMPERIAL:
- 10.5:1
- CYLINDER BORE COATING:
- NICKEL-SILICON CARBIDE
- OVERBORE METRIC:
- STANDARD
- RIDING STYLE:
- UTV
- STYLE:
- STANDARD
- CYLINDER DIAMETER:
- 93,00 MM
- PRODUCT NAME:
- CYLINDER
- UNITS:
- EACH
- CYLINDER DIAMETER METRIC:
- 93.00 MM
- DISPLACEMENT:
- 999 CC
- ENGINE TYPE:
- 4-CYCLE
$622.95 -
Cylinder Works Front Cylinder Kit Kawasaki KVF750 Brute Force 2015-2021 30007-K02
CYLINDER WORKS
$639.95Upgrade your engine with the CYLINDER WORKS Front Cylinder Kit, designed for optimal performance and reliability. This ready-to-install, direct bolt-on solution mirrors the OEM cylinders in appearance while offering superior durability and efficiency...09310609- SKU:
- 09310609
- Availability:
- Ships Same Business Day
- Weight:
- 5.05 LBS
- COMPRESSION RATIO IMPERIAL:
- 9.3:1
- CYLINDER DIAMETER:
- 85,00 MM
- CYLINDER DIAMETER METRIC:
- 85.00 MM
- RIDING STYLE:
- ATV
- UNITS:
- KIT
- STYLE:
- STANDARD
- ENGINE TYPE:
- 4-CYCLE
- CYLINDER BORE COATING:
- NICKEL-SILICON CARBIDE
- DISPLACEMENT:
- 749 CC
- PRODUCT NAME:
- FRONT CYLINDER KIT
$639.95 -
Cylinder Works High Compression Cylinder Kit for Polaris Ranger 800 2011-2014 60002-K02HC
CYLINDER WORKS
$1,060.95Upgrade your engine with the CYLINDER WORKS High Compression Cylinder Kit, designed for seamless installation and maximum performance. This ready-to-install kit features OEM-like aesthetics and is engineered to enhance engine longevity while minimizing...09310617- SKU:
- 09310617
- Availability:
- Ships Same Business Day
- Weight:
- 10.30 LBS
- CYLINDER DIAMETER:
- 80,00 MM
- RIDING STYLE:
- UTV
- STYLE:
- HIGH COMPRESSION
- ENGINE TYPE:
- 4-CYCLE
- CYLINDER DIAMETER METRIC:
- 80.00 MM
- DISPLACEMENT:
- 769 CC
- RIDING STYLE:
- ATV
- COMPRESSION RATIO IMPERIAL:
- 12.0:1
- CYLINDER BORE COATING:
- NICKEL-SILICON CARBIDE
- PRODUCT NAME:
- CYLINDER KIT
- UNITS:
- KIT
$1,060.95 -
Cylinder Works Big Bore Cylinder Kit for Kawasaki KX250F 2011-2014 31006-K01
CYLINDER WORKS
$731.95Upgrade your engine's performance with the CYLINDER WORKS Big Bore Cylinder Kit, designed for easy installation and superior durability. This kit offers a seamless fit and enhanced power without the need for complex modifications, making it the perfect...09310424- SKU:
- 09310424
- Availability:
- Ships Same Business Day
- Weight:
- 3.10 LBS
- CYLINDER BORE COATING:
- NICKEL-SILICON CARBIDE
- CYLINDER DIAMETER:
- 80,00 MM
- ENGINE TYPE:
- 4-CYCLE
- CYLINDER DIAMETER METRIC:
- 80.00 MM
- COMPRESSION RATIO IMPERIAL:
- 13.5:1
- DISPLACEMENT:
- 269 CC
- OVERBORE METRIC:
- +3.00 MM
- PRODUCT NAME:
- CYLINDER KIT
- RIDING STYLE:
- OFF-ROAD
- STYLE:
- BIG BORE
- UNITS:
- KIT
$731.95 -
Cylinder Works Big Bore Cylinder Kit for Yamaha YFZ450 2004-2013 23001-K01
CYLINDER WORKS
$808.95Upgrade your engine with the CYLINDER WORKS Big Bore Cylinder Kit, designed for effortless installation and enhanced performance. This high-quality kit features OEM-like aesthetics and a durable construction that ensures reliability and longevity, making...09310425- SKU:
- 09310425
- Availability:
- Ships Same Business Day
- Weight:
- 4.57 LBS
- CYLINDER DIAMETER:
- 105,00 MM
- ENGINE TYPE:
- 4-CYCLE
- PRODUCT NAME:
- CYLINDER KIT
- STYLE:
- BIG BORE
- RIDING STYLE:
- ATV
- CYLINDER BORE COATING:
- NICKEL-SILICON CARBIDE
- CYLINDER DIAMETER METRIC:
- 105.00 MM
- OVERBORE METRIC:
- +3.00 MM
- UNITS:
- KIT
- COMPRESSION RATIO IMPERIAL:
- 9.2:1
$808.95 -
Cylinder Works Big Bore Cylinder Kit for Yamaha YZ450F 2003-2005 23001-K02
CYLINDER WORKS
$808.95Upgrade your engine's performance with the CYLINDER WORKS Big Bore Cylinder Kit. Designed for seamless installation, this kit enhances power while maintaining a factory-like appearance. Crafted in the U.S.A., it combines quality materials and expert...09310426- SKU:
- 09310426
- Availability:
- Ships Same Business Day
- Weight:
- 4.60 LBS
- CYLINDER DIAMETER METRIC:
- 98.00 MM
- ENGINE TYPE:
- 4-CYCLE
- PRODUCT NAME:
- CYLINDER KIT
- STYLE:
- BIG BORE
- DISPLACEMENT:
- 478 CC
- RIDING STYLE:
- OFF-ROAD
- COMPRESSION RATIO IMPERIAL:
- 12.5:1
- CYLINDER BORE COATING:
- NICKEL-SILICON CARBIDE
- CYLINDER DIAMETER:
- 98,00 MM
- OVERBORE METRIC:
- +3.00 MM
- UNITS:
- KIT
$808.95 -
CYLINDER WORKS Cylinder - Standard 10002
CYLINDER WORKS
$372.95Ready-to-install, direct bolt-on cylinder requires no re-plating and looks virtually identical to the OEM cylinders, Nickel silicon carbide-plated for long life, Made in the U.S.A.09310129- SKU:
- 09310129
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- DISPLACEMENT:
- 449 CC
- ENGINE TYPE:
- 4-CYCLE
- PRODUCT NAME:
- CYLINDER
- COMPRESSION RATIO IMPERIAL:
- 12.1:1
- CYLINDER BORE COATING:
- NICKEL-SILICON CARBIDE
- UNITS:
- EACH
- CYLINDER DIAMETER:
- 96,00 MM
- RIDING STYLE:
- OFF-ROAD
- CYLINDER DIAMETER METRIC:
- 96.00 MM
- OVERBORE METRIC:
- STANDARD
- STYLE:
- STANDARD
$372.95 -
Cylinder Works Standard Bore Cylinder Kit for Yamaha YZ250F 2005-2007 20002-K02
CYLINDER WORKS
$366.95Experience unparalleled performance with the CYLINDER WORKS Cylinder Standard 20002, designed for seamless installation and exceptional durability. These ready-to-install, direct bolt-on cylinders mirror the quality of OEM products while enhancing your...09310131- SKU:
- 09310131
- Availability:
- Ships Same Business Day
- Weight:
- 2.90 LBS
- BORE SIZE METRIC:
- 77.00 MM
- STYLE:
- STANDARD
- ENGINE TYPE:
- 4-CYCLE
- CYLINDER DIAMETER METRIC:
- 77.00 MM
- UNITS:
- EACH
- CYLINDER DIAMETER:
- 77,00 MM
- PRODUCT NAME:
- CYLINDER
- RIDING STYLE:
- OFF-ROAD
$366.95 -
Cylinder Works Big Bore Kit Honda TRX450R 2004-2005 479cc 10.5:1 11003-K01
CYLINDER WORKS
$749.95Upgrade your engine's performance with the Cylinder Works Big Bore Kit 11003-K01, designed for seamless installation and exceptional durability. This high-quality kit comes complete with everything you need for a hassle-free upgrade, ensuring your engine...09310133- SKU:
- 09310133
- Availability:
- Ships Same Business Day
- Weight:
- 4.47 LBS
- COMPRESSION RATIO IMPERIAL:
- 10.5:1
- CYLINDER BORE COATING:
- NICKEL-SILICON CARBIDE
- CYLINDER DIAMETER METRIC:
- 97.00 MM
- OVERBORE METRIC:
- +3.00 MM
- ENGINE TYPE:
- 4-CYCLE
- RIDING STYLE:
- ATV
- CYLINDER DIAMETER:
- 97,00 MM
- PRODUCT NAME:
- CYLINDER KIT
- STYLE:
- BIG BORE
- DISPLACEMENT:
- 479 CC
- UNITS:
- KIT
$749.95 -
Cylinder Works Yamaha WR450F YFZ450R YZ450F 2007-2014 High Compression Cylinder Kit 20003-K01HC
CYLINDER WORKS
$730.95Upgrade your engine with the CYLINDER WORKS High Compression Cylinder Kit, designed for effortless installation and optimal performance. Crafted to match OEM specifications, this kit ensures your engine runs smoothly while enhancing power and efficiency...09310299- SKU:
- 09310299
- Availability:
- Ships Same Business Day
- Weight:
- 4.38 LBS
- COMPRESSION RATIO IMPERIAL:
- 13.5:1
- CYLINDER DIAMETER METRIC:
- 95.00 MM
- DISPLACEMENT:
- 449 CC
- ENGINE TYPE:
- 4-CYCLE
- PRODUCT NAME:
- CYLINDER KIT
- RIDING STYLE:
- OFF-ROAD
- CYLINDER BORE COATING:
- NICKEL-SILICON CARBIDE
- UNITS:
- KIT
- CYLINDER DIAMETER:
- 95,00 MM
- STYLE:
- HIGH COMPRESSION
$730.95 -
Cylinder Works High Compression Cylinder Kit for Suzuki LT-R450 2006-2009 40002-K01HC
CYLINDER WORKS
$688.95Transform your engine's performance with the CYLINDER WORKS High Compression Cylinder Kit. Designed for easy installation, this ready-to-use kit offers a perfect fit without the need for re-plating, ensuring both durability and efficiency. Enhance your...09310303- SKU:
- 09310303
- Availability:
- Ships Same Business Day
- Weight:
- 4.30 LBS
- COMPRESSION RATIO IMPERIAL:
- 13.0:1
- DISPLACEMENT:
- 449 CC
- ENGINE TYPE:
- 4-CYCLE
- STYLE:
- HIGH COMPRESSION
- CYLINDER DIAMETER:
- 95,50 MM
- RIDING STYLE:
- ATV
- UNITS:
- KIT
- CYLINDER BORE COATING:
- NICKEL-SILICON CARBIDE
- CYLINDER DIAMETER METRIC:
- 95.50 MM
- PRODUCT NAME:
- CYLINDER KIT
$688.95 -
Cylinder Works Big Bore Kit Yamaha YZ250F 2001-2013 21002-K01
CYLINDER WORKS
$774.95Elevate your engine's performance with the CYLINDER WORKS Big Bore Kit 21002-K01. Designed for seamless installation, this kit offers a direct bolt-on solution that mirrors the quality of OEM cylinders. Featuring high-performance Vertex pistons, this kit...09310121- SKU:
- 09310121
- Availability:
- Ships Same Business Day
- Weight:
- 3.37 LBS
- COMPRESSION RATIO IMPERIAL:
- 12.5:1
- CYLINDER BORE COATING:
- NICKEL-SILICON CARBIDE
- DISPLACEMENT:
- 269 CC
- OVERBORE METRIC:
- +3.00 MM
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- CYLINDER DIAMETER METRIC:
- 80.00 MM
- ENGINE TYPE:
- 4-CYCLE
- PRODUCT NAME:
- CYLINDER KIT
- STYLE:
- BIG BORE
- CYLINDER DIAMETER:
- 80,00 MM
$774.95 -
CYLINDER WORKS Cylinder - Standard 30001
CYLINDER WORKS
$380.95Ready-to-install, direct bolt-on cylinders require no re-plating and look virtually identical to the OEM cylinders, Nickel Silicon Carbide plated for long life, Big bore cylinders do not require machine work, Made in the U.S.A.09310130- SKU:
- 09310130
- Availability:
- Ships Same Business Day
- Weight:
- 2.50 LBS
- RIDING STYLE:
- OFF-ROAD
- CYLINDER DIAMETER METRIC:
- 77.00 MM
- STYLE:
- STANDARD
- CYLINDER DIAMETER:
- 77,00 MM
- ENGINE TYPE:
- 4-CYCLE
- PRODUCT NAME:
- CYLINDER
- BORE SIZE METRIC:
- 77.00 MM
- UNITS:
- EACH
$380.95 -
Cylinder Works Standard Bore Cylinder for Yamaha YFZ450 2004-2009 2012-2013 20001
CYLINDER WORKS
$380.95Upgrade your engine performance with the CYLINDER WORKS Cylinder Standard 20001, designed for effortless installation and optimal durability. This high-quality, direct bolt-on replacement offers a seamless fit and replicates the original equipment...09310132- SKU:
- 09310132
- Availability:
- Ships Same Business Day
- Weight:
- 3.30 LBS
- CYLINDER DIAMETER:
- 95,00 MM
- OVERBORE METRIC:
- STANDARD
- STYLE:
- STANDARD
- COMPRESSION RATIO IMPERIAL:
- 12.0:1
- CYLINDER BORE COATING:
- NICKEL-SILICON CARBIDE
- DISPLACEMENT:
- 449 CC
- PRODUCT NAME:
- CYLINDER
- CYLINDER DIAMETER METRIC:
- 95.00 MM
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- ENGINE TYPE:
- 4-CYCLE
$380.95 -
Cylinder Works Big Bore Kit for Suzuki DR-Z400 2000-2004 41001-K01
CYLINDER WORKS
$775.95Experience enhanced performance and durability with the CYLINDER WORKS Big Bore Kit 41001-K01. This ready-to-install, direct bolt-on cylinder is designed to seamlessly replace your OEM cylinder, delivering increased power without the need for complex...09310135- SKU:
- 09310135
- Availability:
- Ships Same Business Day
- Weight:
- 4.44 LBS
- COMPRESSION RATIO IMPERIAL:
- 11.3:1
- ENGINE TYPE:
- 4-CYCLE
- PRODUCT NAME:
- CYLINDER KIT
- RIDING STYLE:
- STREET
- STYLE:
- BIG BORE
- CYLINDER DIAMETER:
- 94,00 MM
- DISPLACEMENT:
- 434 CC
- CYLINDER BORE COATING:
- NICKEL-SILICON CARBIDE
- OVERBORE METRIC:
- +4.00 MM
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- CYLINDER DIAMETER METRIC:
- 94.00 MM
- RIDING STYLE:
- ATV
$775.95 -
Cylinder Works Standard Bore Cylinder Kit for Suzuki DR-Z400S 2000-2022 40001-K01
CYLINDER WORKS
$407.95Experience unmatched performance and durability with the CYLINDER WORKS Cylinder Standard 40001. This ready-to-install, direct bolt-on cylinder offers a seamless fit, ensuring your engine runs smoothly and efficiently. Crafted with precision in the U.S.A...09310139- SKU:
- 09310139
- Availability:
- Ships Same Business Day
- Weight:
- 3.61 LBS
- CYLINDER DIAMETER METRIC:
- 90.00 MM
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- CYLINDER DIAMETER:
- 90,00 MM
- PRODUCT NAME:
- CYLINDER
- RIDING STYLE:
- OFF-ROAD
- STYLE:
- STANDARD
- ENGINE TYPE:
- 4-CYCLE
- RIDING STYLE:
- STREET
$407.95 -
Cylinder Works Big Bore Cylinder Kit for Honda CRF150R 2012-2020 11004-K02
CYLINDER WORKS
$643.95Enhance your engine's performance with the CYLINDER WORKS Big Bore Cylinder Kit 11004-K02. This ready-to-install kit offers a seamless fit and exceptional durability, making it the perfect upgrade for enthusiasts seeking improved power and efficiency...09310485- SKU:
- 09310485
- Availability:
- Ships Same Business Day
- Weight:
- 2.80 LBS
- CYLINDER BORE COATING:
- NICKEL-SILICON CARBIDE
- CYLINDER DIAMETER:
- 68,00 MM
- DISPLACEMENT:
- 159 CC
- OVERBORE METRIC:
- +2.00 MM
- PRODUCT NAME:
- CYLINDER KIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- COMPRESSION RATIO IMPERIAL:
- 11.7:1
- STYLE:
- BIG BORE
- CYLINDER DIAMETER METRIC:
- 68.00 MM
- ENGINE TYPE:
- 4-CYCLE
$643.95 -
Cylinder Works Big Bore Cylinder Kit for 2009-2015 Kawasaki KX450F 31011-K01
CYLINDER WORKS
$728.95Upgrade your engine's performance with the CYLINDER WORKS Big Bore Cylinder Kit. Designed for easy installation, this kit provides a seamless fit while enhancing power and efficiency. Crafted with premium materials, it ensures durability and a quieter...09310603- SKU:
- 09310603
- Availability:
- Ships Same Business Day
- Weight:
- 3.95 LBS
- DISPLACEMENT:
- 469 CC
- OVERBORE METRIC:
- +2.00 MM
- CYLINDER BORE COATING:
- NICKEL-SILICON CARBIDE
- PRODUCT NAME:
- CYLINDER KIT
- STYLE:
- BIG BORE
- UNITS:
- KIT
- COMPRESSION RATIO IMPERIAL:
- 12.5:1
- RIDING STYLE:
- OFF-ROAD
- CYLINDER DIAMETER:
- 98,00 MM
- CYLINDER DIAMETER METRIC:
- 98.00 MM
- ENGINE TYPE:
- 4-CYCLE
$728.95 -
Cylinder Works Standard Bore Cylinder Kit for Polaris RZR XP 900 2011-2013 60001-K02
CYLINDER WORKS
$1,115.95Upgrade your engine with the CYLINDER WORKS Cylinder Kit, designed for seamless installation and optimal performance. This complete kit includes everything you need for a hassle-free upgrade, ensuring your engine runs smoothly and efficiently. Crafted...09310657- SKU:
- 09310657
- Availability:
- Ships Same Business Day
- Weight:
- 10.00 LBS
- COMPRESSION RATIO IMPERIAL:
- 10.6:1
- CYLINDER DIAMETER:
- 93,00 MM
- ENGINE TYPE:
- 4-CYCLE
- PRODUCT NAME:
- CYLINDER KIT
- CYLINDER BORE COATING:
- NICKEL-SILICON CARBIDE
- DISPLACEMENT:
- 875 CC
- UNITS:
- KIT
- CYLINDER DIAMETER METRIC:
- 93.00 MM
- RIDING STYLE:
- UTV
- STYLE:
- STANDARD
$1,115.95
