Dirt Bike Engine
Explore our selection for dirt bike parts for adding horsepower or reliability to a dirt bike's engine. We feature engine parts from Wiseco, Vertex, and more common engine part manufacturers. Get new pistons and gasket kits for re-freshening engines to withstand any conditions you put your bike through!
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Dirt Bike Cams and Parts
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Dirt Bike Connecting Rods and Parts
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Dirt Bike Crankcases and Parts
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Dirt Bike Crankshafts and Parts
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Dirt Bike Cylinder Heads and Parts
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Dirt Bike Cylinders and Parts
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Dirt Bike Engine Bearings
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Dirt Bike Engine Covers
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Dirt Bike Engine Gaskets and Kits
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Dirt Bike Engine Rebuild Kits
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Dirt Bike Engine Seals - Orings and Kits
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Dirt Bike Engine Valves and Parts
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Dirt Bike Flywheel and Rod Assemblies
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Dirt Bike Fuel Filters
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Dirt Bike Miscellaneous Engine Parts
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Dirt Bike Oil Coolers
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Dirt Bike Oil Filters
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Dirt Bike Oil Lines
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Dirt Bike Oil Pumps
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Dirt Bike Piston and Ring Kits
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Dirt Bike Piston Rings Only
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Dirt Bike Wrist Pins and Circlips
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On Sale
CYLINDER WORKS Cylinder Kit - Big Bore 40004-K03HC
CYLINDER WORKS
MSRP: $599.95Now: $550.76Was: $611.95CYLINDER WORKS Cylinder Kit Big Bore 40004-K03HCReady-to-install, direct bolt-on cylinders require no re-plating and look virtually identical to the OEM cylinders, Cylinder kits include matched Vertex pistons to ensure longevity, performance and reduced...9310708- SKU:
- 9310708
- Availability:
- Ships Same Business Day
- Weight:
- 3.25 LBS
- CYLINDER DIAMETER METRIC:
- 77.00 MM
- ENGINE TYPE:
- 4-CYCLE
- BORE SIZE METRIC:
- 77.00 MM
- COMPRESSION RATIO IMPERIAL:
- 14.2:1
- STYLE:
- STANDARD
- CYLINDER DIAMETER:
- 77,00 MM
- PRODUCT NAME:
- CYLINDER KIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
MSRP: $599.95Now: $550.76Was: $611.95 -
On Sale
CYLINDER WORKS Cylinder Kit - Big Bore 20010-K02HC
CYLINDER WORKS
MSRP: $614.95Now: $564.26Was: $626.95CYLINDER WORKS Cylinder Kit Big Bore 20010-K02HCReady-to-install, direct bolt-on cylinders require no re-plating and look virtually identical to the OEM cylinders, Cylinder kits include matched Vertex pistons to ensure longevity, performance and reduced...9310709- SKU:
- 9310709
- 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
MSRP: $614.95Now: $564.26Was: $626.95 -
On Sale
CYLINDER WORKS Cylinder Kit - Standard - Honda 10002-K02
CYLINDER WORKS
MSRP: $533.95Now: $490.46Was: $544.95CYLINDER WORKS Cylinder Kit Standard Honda 10002-K02Ready-to-install, direct bolt-on cylinders require no re-plating and look virtually identical to the OEM cylinders, Cylinder kits include matched Vertex pistons to ensure longevity, performance and...9310839- SKU:
- 9310839
- 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
MSRP: $533.95Now: $490.46Was: $544.95 -
On Sale
CYLINDER WORKS Cylinder Kit - Standard - Honda 10010-K02
CYLINDER WORKS
MSRP: $599.95Now: $550.76Was: $611.95CYLINDER WORKS Cylinder Kit Standard Honda 10010-K02Ready-to-install, direct bolt-on cylinders require no re-plating and look virtually identical to the OEM cylinders, Cylinder kits include matched Vertex pistons to ensure longevity, performance and...9310840- SKU:
- 9310840
- 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
MSRP: $599.95Now: $550.76Was: $611.95 -
On Sale
CYLINDER WORKS Cylinder Kit - Big Bore - Honda 10002-K02HC
CYLINDER WORKS
MSRP: $566.95Now: $520.16Was: $577.95CYLINDER WORKS Cylinder Kit Big Bore Honda 10002-K02HCReady-to-install, direct bolt-on cylinders require no re-plating and look virtually identical to the OEM cylinders, Cylinder kits include matched Vertex pistons to ensure longevity, performance and...9310841- SKU:
- 9310841
- 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
MSRP: $566.95Now: $520.16Was: $577.95 -
On Sale
CYLINDER WORKS Cylinder Kit - Standard - Arctic Cat 40001-K02
CYLINDER WORKS
MSRP: $588.95Now: $540.86Was: $600.95CYLINDER WORKS Cylinder Kit Standard Arctic Cat 40001-K02Ready-to-install, direct bolt-on cylinders require no re-plating and look virtually identical to the OEM cylinders, Cylinder kits include matched Vertex pistons to ensure longevity, performance and...9310842- SKU:
- 9310842
- 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
MSRP: $588.95Now: $540.86Was: $600.95 -
On Sale
CYLINDER WORKS Cylinder Kit - Big Bore 40001-K02HC
CYLINDER WORKS
MSRP: $587.95Now: $539.96Was: $599.95CYLINDER WORKS Cylinder Kit Big Bore 40001-K02HCReady-to-install, direct bolt-on cylinders require no re-plating and look virtually identical to the OEM cylinders, Cylinder kits include matched Vertex pistons to ensure longevity, performance and reduced...9310843- SKU:
- 9310843
- 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
MSRP: $587.95Now: $539.96Was: $599.95 -
On Sale
CYLINDER WORKS Cylinder Kit - Big Bore - Polaris 61006-K01
CYLINDER WORKS
MSRP: $1,283.95Now: $1,178.96Was: $1,309.95CYLINDER WORKS Cylinder Kit Big Bore Polaris 61006-K01Ready-to-install, direct bolt-on cylinders require no re-plating and look virtually identical to the OEM cylinders, Cylinder kits include matched Vertex pistons to ensure longevity, performance and...9310844- SKU:
- 9310844
- 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
MSRP: $1,283.95Now: $1,178.96Was: $1,309.95 -
On Sale
CYLINDER WORKS Cylinder Kit - Standard - Honda CW10011K01
CYLINDER WORKS
MSRP: $510.95Now: $468.86Was: $520.95CYLINDER WORKS Cylinder Kit Standard Honda CW10011K01Ready-to-install, direct bolt-on cylinders require no re-plating and look virtually identical to the OEM cylinders, Cylinder kits include matched Vertex pistons to ensure longevity, performance and...9310845- SKU:
- 9310845
- 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
MSRP: $510.95Now: $468.86Was: $520.95 -
On Sale
CYLINDER WORKS Cylinder Kit - Big Bore - High Compression CW10011K01HC
CYLINDER WORKS
MSRP: $544.95Now: $500.36Was: $555.95CYLINDER WORKS Cylinder Kit Big Bore High Compression CW10011K01HCReady-to-install, direct bolt-on cylinders require no re-plating and look virtually identical to the OEM cylinders, Cylinder kits include matched Vertex pistons to ensure longevity,...9310846- SKU:
- 9310846
- 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
MSRP: $544.95Now: $500.36Was: $555.95 -
On Sale
CYLINDER WORKS Cylinder Kit - Big Bore - Honda CW11011K01
CYLINDER WORKS
MSRP: $645.95Now: $593.06Was: $658.95CYLINDER WORKS Cylinder Kit Big Bore Honda CW11011K01Ready-to-install, direct bolt-on cylinders require no re-plating and look virtually identical to the OEM cylinders, Cylinder kits include matched Vertex pistons to ensure longevity, performance and...9310847- SKU:
- 9310847
- 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
MSRP: $645.95Now: $593.06Was: $658.95 -
On Sale
CYLINDER WORKS Cylinder - Standard - Yamaha CW20012
CYLINDER WORKS
MSRP: $377.95Now: $347.36Was: $385.95CYLINDER WORKS Cylinder Standard Yamaha CW20012Ready-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.9310848- SKU:
- 9310848
- 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
MSRP: $377.95Now: $347.36Was: $385.95 -
On Sale
CYLINDER WORKS Cylinder Kit - Standard - Yamaha CW20012K01
CYLINDER WORKS
MSRP: $646.95Now: $593.96Was: $659.95CYLINDER WORKS Cylinder Kit Standard Yamaha CW20012K01Ready-to-install, direct bolt-on cylinders require no re-plating and look virtually identical to the OEM cylinders, Cylinder kits include matched Vertex pistons to ensure longevity, performance and...9310849- SKU:
- 9310849
- 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
MSRP: $646.95Now: $593.96Was: $659.95 -
On Sale
CYLINDER WORKS Cylinder Kit - Big Bore - High Compression CW20012K01HC
CYLINDER WORKS
MSRP: $657.95Now: $603.86Was: $670.95CYLINDER WORKS Cylinder Kit Big Bore High Compression CW20012K01HCReady-to-install, direct bolt-on cylinders require no re-plating and look virtually identical to the OEM cylinders, Cylinder kits include matched Vertex pistons to ensure longevity,...9310850- SKU:
- 9310850
- 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
MSRP: $657.95Now: $603.86Was: $670.95 -
On Sale
CYLINDER WORKS Cylinder Kit - Big Bore CW21012K01
CYLINDER WORKS
Now: $746.42Was: $829.35CYLINDER WORKS Cylinder Kit Big Bore CW21012K01Ready-to-install, direct bolt-on cylinders require no re-plating and look virtually identical to the OEM cylinders, Cylinder kits include matched Vertex pistons to ensure longevity, performance and reduced...9310851- SKU:
- 9310851
- 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
Now: $746.42Was: $829.35 -
On Sale
CYLINDER WORKS Cylinder Kit - Standard - Polaris CW60007K02
CYLINDER WORKS
MSRP: $959.95Now: $863.96Was: $959.95CYLINDER WORKS Cylinder Kit Standard Polaris CW60007K02Ready-to-install, direct bolt-on cylinders require no re-plating and look virtually identical to the OEM cylinders, Cylinder kits include matched Vertex pistons to ensure longevity, performance and...9310852- SKU:
- 9310852
- 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
MSRP: $959.95Now: $863.96Was: $959.95 -
On Sale
CYLINDER WORKS Cylinder Kit - High Compression - Big Bore CW60007K01HC
CYLINDER WORKS
MSRP: $1,110.95Now: $1,019.66Was: $1,132.95CYLINDER WORKS Cylinder Kit High Compression Big Bore CW60007K01HCReady-to-install, direct bolt-on cylinders require no re-plating and look virtually identical to the OEM cylinders, Cylinder kits include matched Vertex pistons to ensure longevity,...9310853- SKU:
- 9310853
- 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
MSRP: $1,110.95Now: $1,019.66Was: $1,132.95 -
On Sale
CYLINDER WORKS Cylinder Kit - Big Bore CW61007K01
CYLINDER WORKS
MSRP: $1,231.95Now: $1,131.26Was: $1,256.95CYLINDER WORKS Cylinder Kit Big Bore CW61007K01Ready-to-install, direct bolt-on cylinders require no re-plating and look virtually identical to the OEM cylinders, Cylinder kits include matched Vertex pistons to ensure longevity, performance and reduced...9310854- SKU:
- 9310854
- 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: $1,131.26Was: $1,256.95 -
On Sale
CYLINDER WORKS Cylinder Kit - Standard 10007-K03
CYLINDER WORKS
MSRP: $559.95Now: $503.96Was: $559.95CYLINDER WORKS Cylinder Kit Standard 10007-K03Ready-to-install, direct bolt-on cylinders require no re-plating and look virtually identical to the OEM cylinders, Cylinder kits include matched Vertex pistons to ensure longevity, performance and reduced...9310674- SKU:
- 9310674
- 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
MSRP: $559.95Now: $503.96Was: $559.95 -
On Sale
CYLINDER WORKS Cylinder Kit - Standard 40004-K03
CYLINDER WORKS
MSRP: $577.95Now: $530.96Was: $589.95CYLINDER WORKS Cylinder Kit Standard 40004-K03Ready-to-install, direct bolt-on cylinders require no re-plating and look virtually identical to the OEM cylinders, Cylinder kits include matched Vertex pistons to ensure longevity, performance and reduced...9310675- SKU:
- 9310675
- 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
MSRP: $577.95Now: $530.96Was: $589.95
