Dirt Bike Engine
Discover a full range of dirt bike engine components for rebuilding or upgrading your performance. 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.
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Cylinder Works Standard Bore Cylinder Kit for Yamaha YZ250F 2005-2007 20002-K02
CYLINDER WORKS
$366.95CYLINDER WORKS Cylinder Standard 20002 Experience 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...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
$749.95CYLINDER WORKS Cylinder Big Bore Kit 11003-K01 Upgrade 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...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
$730.95High-Performance Cylinder Kit - Model 20003-K01HC Upgrade 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...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
$688.95CYLINDER WORKS High Compression Cylinder Kit 40002-K01HC Transform 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...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
$774.95CYLINDER WORKS Big Bore Kit 21002-K01 Elevate 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...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
$380.95CYLINDER WORKS Cylinder Standard 30001Ready-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...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
$380.95CYLINDER WORKS Cylinder Standard 20001 Upgrade 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...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
$775.95CYLINDER WORKS Big Bore Kit 41001-K01 Experience 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...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
$407.95CYLINDER WORKS Cylinder Standard 40001 Experience 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...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 Yamaha YFM700R Raptor 2006-2014 Standard Bore Cylinder Kit 20004-K01
CYLINDER WORKS
$780.95CYLINDER WORKS Cylinder Kit Standard 20004-K01 Elevate your engine's performance with the CYLINDER WORKS Cylinder Kit Standard 20004-K01. This ready-to-install, direct bolt-on solution mirrors the quality and appearance of OEM cylinders, ensuring a...09310379- SKU:
- 09310379
- Availability:
- Ships Same Business Day
- Weight:
- 8.34 LBS
- PRODUCT NAME:
- CYLINDER KIT
- COMPRESSION RATIO IMPERIAL:
- 9.2:1
- CYLINDER DIAMETER:
- 102,00 MM
- CYLINDER DIAMETER METRIC:
- 102.00 MM
- UNITS:
- KIT
- CYLINDER BORE COATING:
- NICKEL-SILICON CARBIDE
- DISPLACEMENT:
- 686 CC
- STYLE:
- STANDARD
- ENGINE TYPE:
- 4-CYCLE
- RIDING STYLE:
- ATV
$780.95 -
Cylinder Works Big Bore Cylinder Kit for Honda CRF150R 2012-2020 11004-K02
CYLINDER WORKS
$643.95CYLINDER WORKS Big Bore Cylinder Kit 11004-K02 Enhance 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...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
$728.95CYLINDER WORKS Big Bore Cylinder Kit 31011-K01 Upgrade 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...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
$1,115.95CYLINDER WORKS Cylinder Kit Standard Bore 60001-K02 Upgrade 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...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 -
DEL WEST Exhaust Valve DW-YZ250F-EV14
DEL WEST
$155.95DEL WEST Exhaust Valve DW-YZ250F-EV14Meets the demands of off-road, all valves are backed by an established record of performance and reliability in competition that is unapproachable09262721- SKU:
- 09262721
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- MATERIAL:
- TITANIUM
- APPLICATION:
- EXHAUST
- PRODUCT NAME:
- VALVE
$155.95 -
DEL WEST Intake Valves CRF250RIV10NDHF
DEL WEST
$116.95DEL WEST Intake Valves CRF250RIV10NDHFThe ultimate in high-performance valves for the serious engine builder, No compromise design, High-flow design includes a 50 degree seat angle, no dish valve face and 5mm stem diameter (intake and exhaust) for better...09262469- SKU:
- 09262469
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MATERIAL:
- TITANIUM
- APPLICATION:
- INTAKE
- PRODUCT NAME:
- VALVE
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
$116.95 -
DEL WEST Exhaust Valves CRF250REV10NDHF
DEL WEST
$172.95DEL WEST Exhaust Valves CRF250REV10NDHFThe ultimate in high-performance valves for the serious engine builder, No compromise design, High-flow design includes a 50 degree seat angle, no dish valve face and 5mm stem diameter (intake and exhaust) for...09262470- SKU:
- 09262470
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- MATERIAL:
- TITANIUM
- APPLICATION:
- EXHAUST
- PRODUCT NAME:
- VALVE
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
$172.95 -
DEL WEST Exhaust Valve DWCRF450REV09ND
DEL WEST
$172.95DEL WEST Exhaust Valve DWCRF450REV09NDMeets the demands of off-road, all valves are backed by an established record of performance and reliability in competition that is unapproachable09262471- SKU:
- 09262471
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MATERIAL:
- TITANIUM
- PRODUCT NAME:
- VALVE
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- APPLICATION:
- EXHAUST
$172.95 -
DEL WEST Valve Spring Retainer DW-H-RX01-S
DEL WEST
$48.95DEL WEST Valve Spring Retainer DW-H-RX01-SDel West is the world's largest supplier of titanium valves and valvetrain components for motor racing including those from NASCAR to the exotic engines of Formula One and a long relationship with Pro Circuit in...09262472- SKU:
- 09262472
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- APPLICATION:
- INTAKE
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- RETAINER
- TYPE:
- VALVE SPRING
- UNITS:
- EACH
- APPLICATION:
- EXHAUST
$48.95 -
DEL WEST Valve Spring Retainer DW-H-RX02-S
DEL WEST
$48.95DEL WEST Valve Spring Retainer DW-H-RX02-SDel West is the world's largest supplier of titanium valves and valvetrain components for motor racing including those from NASCAR to the exotic engines of Formula One and a long relationship with Pro Circuit in...09262473- SKU:
- 09262473
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- APPLICATION:
- INTAKE
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- VALVE SPRING
- APPLICATION:
- EXHAUST
- PRODUCT NAME:
- RETAINER
- UNITS:
- EACH
$48.95 -
DEL WEST Valve Spring Retainer DW-SZ-RX01-S
DEL WEST
$48.95DEL WEST Valve Spring Retainer DW-SZ-RX01-SDel West is the world's largest supplier of titanium valves and valvetrain components for motor racing including those from NASCAR to the exotic engines of Formula One and a long relationship with Pro Circuit in...09262474- SKU:
- 09262474
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- VALVE SPRING
- UNITS:
- EACH
- APPLICATION:
- INTAKE
- APPLICATION:
- EXHAUST
- PRODUCT NAME:
- RETAINER
$48.95Qty in Cart: 0Quantity:Price:$48.95Subtotal:
