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
- Product
- Qty in Cart
- Quantity
- Price
- Subtotal
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On Sale
CYLINDER WORKS Cylinder Head Kit - Standard Bore CH3002-K01
CYLINDER WORKS
MSRP: $549.95Now: $504.86Was: $560.95CYLINDER WORKS Cylinder Head Kit Standard Bore CH3002-K01New replacement cylinder head, Include cam caps and cam cap bolts, Include C630 (nickel/aluminum/bronze) valve seats and guides, Competition valve job, Shortened valve guides to accept higher lift...9311019- SKU:
- 9311019
- Availability:
- Ships Same Business Day
- Weight:
- 5.45 LBS
- PRODUCT NAME:
- CYLINDER KIT
- RIDING STYLE:
- OFF-ROAD
- STYLE:
- STANDARD
- UNITS:
- KIT
MSRP: $549.95Now: $504.86Was: $560.95 -
On Sale
CYLINDER WORKS Cylinder - Standard CW20014
CYLINDER WORKS
MSRP: $344.95Now: $316.76Was: $351.95CYLINDER WORKS Cylinder Standard CW20014Ready-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.9311020- SKU:
- 9311020
- Availability:
- Ships Same Business Day
- Weight:
- 3.55 LBS
- CYLINDER DIAMETER METRIC:
- 97.00 MM
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- PRODUCT NAME:
- CYLINDER
- ENGINE TYPE:
- 4-CYCLE
- CYLINDER DIAMETER:
- 97,00 MM
- STYLE:
- STANDARD
MSRP: $344.95Now: $316.76Was: $351.95 -
On Sale
CYLINDER WORKS Cylinder - Standard 50004
CYLINDER WORKS
MSRP: $431.95Now: $396.86Was: $440.95CYLINDER WORKS Cylinder Standard 50004Ready-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...9310492- SKU:
- 9310492
- 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
MSRP: $431.95Now: $396.86Was: $440.95 -
On Sale
CYLINDER WORKS Cylinder - Standard - YZ450F 20005
CYLINDER WORKS
MSRP: $387.20Now: $360.37Was: $400.41CYLINDER WORKS Cylinder Standard YZ450F 20005Ready-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,...9310396- SKU:
- 9310396
- 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
MSRP: $387.20Now: $360.37Was: $400.41 -
On Sale
CYLINDER WORKS Cylinder - Standard - KX250F - 2009 30004
CYLINDER WORKS
MSRP: $344.95Now: $316.76Was: $351.95CYLINDER WORKS Cylinder Standard KX250F 2009 30004Ready-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...9310398- SKU:
- 9310398
- 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
MSRP: $344.95Now: $316.76Was: $351.95 -
On Sale
CYLINDER WORKS Cylinder - Standard - KX250F 2010 30005
CYLINDER WORKS
MSRP: $355.95Now: $326.66Was: $362.95CYLINDER WORKS Cylinder Standard KX250F 2010 30005Ready-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...9310399- SKU:
- 9310399
- 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
MSRP: $355.95Now: $326.66Was: $362.95 -
On Sale
CYLINDER WORKS Cylinder - Standard - KX250F - 2011-2012 30006
CYLINDER WORKS
MSRP: $344.95Now: $316.76Was: $351.95CYLINDER WORKS Cylinder Standard KX250F 2011-2012 30006Ready-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...9310400- SKU:
- 9310400
- 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
MSRP: $344.95Now: $316.76Was: $351.95 -
On Sale
CYLINDER WORKS Cylinder - Standard - KTM350 SX-F 50001
CYLINDER WORKS
MSRP: $431.95Now: $396.86Was: $440.95CYLINDER WORKS Cylinder Standard KTM350 SX-F 50001Ready-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...9310403- SKU:
- 9310403
- 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
MSRP: $431.95Now: $396.86Was: $440.95 -
On Sale
CYLINDER WORKS Cylinder - Standard - KTM250 50002
CYLINDER WORKS
MSRP: $431.95Now: $396.86Was: $440.95CYLINDER WORKS Cylinder Standard KTM250 50002Ready-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,...9310404- SKU:
- 9310404
- 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
MSRP: $431.95Now: $396.86Was: $440.95 -
On Sale
CYLINDER WORKS Cylinder Kit - Standard Bore 50002-K01
CYLINDER WORKS
MSRP: $733.95Now: $674.06Was: $748.95CYLINDER WORKS Cylinder Kit Standard Bore 50002-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...9310408- SKU:
- 9310408
- 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
MSRP: $733.95Now: $674.06Was: $748.95 -
On Sale
CYLINDER WORKS Cylinder Kit - Standard 10008-K01
CYLINDER WORKS
MSRP: $599.95Now: $539.96Was: $599.95CYLINDER WORKS Cylinder Kit Standard 10008-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 reduced...9310274- SKU:
- 9310274
- 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
MSRP: $599.95Now: $539.96Was: $599.95 -
On Sale
CYLINDER WORKS Cylinder Kit - Standard 20002-K02
CYLINDER WORKS
MSRP: $592.95Now: $544.46Was: $604.95CYLINDER WORKS Cylinder Kit Standard 20002-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 reduced...9310279- SKU:
- 9310279
- 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
MSRP: $592.95Now: $544.46Was: $604.95Qty in Cart: 0Quantity:Price:MSRP: $592.95Now: $544.46Was: $604.95Subtotal: -
On Sale
CYLINDER WORKS Cylinder Kit - Standard 20001-K02
CYLINDER WORKS
MSRP: $614.95Now: $564.26Was: $626.95CYLINDER WORKS Cylinder Kit Standard 20001-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 reduced...9310280- SKU:
- 9310280
- 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
MSRP: $614.95Now: $564.26Was: $626.95 -
On Sale
CYLINDER WORKS Cylinder Kit - High Compression 10002-K01HC
CYLINDER WORKS
MSRP: $599.95Now: $539.96Was: $599.95CYLINDER WORKS Cylinder Kit High Compression 10002-K01HCReady-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...9310291- SKU:
- 9310291
- 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
MSRP: $599.95Now: $539.96Was: $599.95 -
On Sale
CYLINDER WORKS Cylinder Kit - High Compression 30004-K01HC
CYLINDER WORKS
MSRP: $579.95Now: $532.76Was: $591.95CYLINDER WORKS Cylinder Kit High Compression 30004-K01HCReady-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...9310295- SKU:
- 9310295
- Availability:
- Ships Same Business Day
- Weight:
- 2.95 LBS
- STYLE:
- HIGH COMPRESSION
- DISPLACEMENT:
- 249 CC
- ENGINE TYPE:
- 4-CYCLE
- COMPRESSION RATIO IMPERIAL:
- 13.9:1
- CYLINDER DIAMETER METRIC:
- 77.00 MM
- RIDING STYLE:
- OFF-ROAD
- CYLINDER BORE COATING:
- NICKEL-SILICON CARBIDE
- CYLINDER DIAMETER:
- 77,00 MM
- PRODUCT NAME:
- CYLINDER KIT
- UNITS:
- KIT
MSRP: $579.95Now: $532.76Was: $591.95 -
On Sale
CYLINDER WORKS Cylinder Kit - High Compression 20002-K01HC
CYLINDER WORKS
MSRP: $614.95Now: $564.26Was: $626.95CYLINDER WORKS Cylinder Kit High Compression 20002-K01HCReady-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...9310296- SKU:
- 9310296
- Availability:
- Ships Same Business Day
- Weight:
- 3.33 LBS
- DISPLACEMENT:
- 249 CC
- ENGINE TYPE:
- 4-CYCLE
- PRODUCT NAME:
- CYLINDER KIT
- STYLE:
- HIGH COMPRESSION
- COMPRESSION RATIO IMPERIAL:
- 13.5:1
- CYLINDER BORE COATING:
- NICKEL-SILICON CARBIDE
- CYLINDER DIAMETER:
- 77,00 MM
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- CYLINDER DIAMETER METRIC:
- 77.00 MM
MSRP: $614.95Now: $564.26Was: $626.95Qty in Cart: 0Quantity:Price:MSRP: $614.95Now: $564.26Was: $626.95Subtotal: -
On Sale
CYLINDER WORKS Cylinder - Standard 10004
CYLINDER WORKS
MSRP: $290.95Now: $267.26Was: $296.95CYLINDER WORKS Cylinder Standard 10004Ready-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...9310163- SKU:
- 9310163
- 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
MSRP: $290.95Now: $267.26Was: $296.95Qty in Cart: 0Quantity:Price:MSRP: $290.95Now: $267.26Was: $296.95Subtotal: -
On Sale
CYLINDER WORKS Cylinder Big Bore Kit 31001-K01
CYLINDER WORKS
MSRP: $649.95Now: $594.86Was: $660.95CYLINDER WORKS Cylinder Big Bore Kit 31001-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 reduced...9310120- SKU:
- 9310120
- 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
MSRP: $649.95Now: $594.86Was: $660.95 -
On Sale
CYLINDER WORKS Cylinder - Standard 10001
CYLINDER WORKS
MSRP: $301.95Now: $277.16Was: $307.95CYLINDER WORKS Cylinder Standard 10001Ready-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.9310128- SKU:
- 9310128
- 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
MSRP: $301.95Now: $277.16Was: $307.95 -
On Sale
CYLINDER WORKS Big Bore Gasket Kit 41004-G01
CYLINDER WORKS
MSRP: $579.95Now: $521.96Was: $579.95CYLINDER WORKS Big Bore Gasket Kit 41004-G01Ready-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...9342151- SKU:
- 9342151
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- MATERIAL:
- NICKEL SILICON CARBIDE
- STYLE:
- BIG BORE
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TOP END
- UNITS:
- KIT
- BORE SIZE METRIC:
- OVERSIZED (+3.00 MM)
- PRODUCT NAME:
- GASKET KIT
MSRP: $579.95Now: $521.96Was: $579.95
