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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- Price
- Subtotal
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On Sale
ATHENA Race Gasket Kit - YZ80/85 R4856-089
ATHENA
MSRP: $17.95Now: $16.16Was: $17.95ATHENA Race Gasket Kit YZ80/85 R4856-089Specifically designed for the pro, semi-pro and amateur rider who freshens up their engine prior to a race or during mid-season, Kits include a top-of-the line MLSS head gasket and two or more premium-quality base...9342843- SKU:
- 9342843
- Availability:
- Ships Same Business Day
- Weight:
- 0.14 LBS
- MATERIAL:
- RUBBER
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- GASKET KIT
- STYLE:
- RACE
- UNITS:
- KIT
- TYPE:
- TOP END
MSRP: $17.95Now: $16.16Was: $17.95Qty in Cart: 0Quantity:Price:MSRP: $17.95Now: $16.16Was: $17.95Subtotal: -
On Sale
ATHENA Race Gasket Kit - YZ250 R4856-267
ATHENA
MSRP: $17.95Now: $16.16Was: $17.95ATHENA Race Gasket Kit YZ250 R4856-267Specifically designed for the pro, semi-pro and amateur rider who freshens up their engine prior to a race or during mid-season, Kits include a top-of-the line MLSS head gasket and two or more premium-quality base...9342845- SKU:
- 9342845
- Availability:
- Ships Same Business Day
- Weight:
- 0.14 LBS
- STYLE:
- RACE
- MATERIAL:
- RUBBER
- UNITS:
- KIT
- MATERIAL:
- STEEL
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TOP END
MSRP: $17.95Now: $16.16Was: $17.95 -
On Sale
ATHENA Top End Gasket Kit - 50SX P400270600049
ATHENA
MSRP: $68.95Now: $62.06Was: $68.95ATHENA Top End Gasket Kit 50SX P400270600049Specifically designed for the pro, semi-pro and amateur rider who freshens up their engine prior to a race or during midseason. Gives the rider a choice of using standard gas with stock compression, or race gas...9342856- SKU:
- 9342856
- Availability:
- Ships Same Business Day
- Weight:
- 0.12 LBS
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TOP END
- UNITS:
- KIT
MSRP: $68.95Now: $62.06Was: $68.95 -
On Sale
ATHENA Gasket Kit P400270160059
ATHENA
MSRP: $59.95Now: $53.96Was: $59.95ATHENA Gasket Kit P400270160059Kits include aluminum cylinder with nickel-carbide coating designed with larger water jackets, Forged piston with molybdenum coating, Special gasket kit, Easy-to-follow step-by-step installation instructions, All are...9342898- SKU:
- 9342898
- Availability:
- Ships Same Business Day
- Weight:
- 0.17 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TOP END
- UNITS:
- KIT
- DISPLACEMENT:
- 277 CC
- BORE SIZE:
- 80,00 MM
- BORE SIZE METRIC:
- 80.00 MM
- PRODUCT NAME:
- GASKET KIT
MSRP: $59.95Now: $53.96Was: $59.95 -
On Sale
ATHENA Top End Gasket Kit - KTM P400270600022
ATHENA
MSRP: $96.95Now: $87.26Was: $96.95Specifically designed for the pro, semi-pro and amateur rider who freshens up their engine prior to a race or during midseason. Gives the rider a choice of using standard gas with stock compression, or race gas with a higher compression. Kits do not...9342906- SKU:
- 9342906
- Weight:
- 3.00 LBS
MSRP: $96.95Now: $87.26Was: $96.95Qty in Cart: 0Quantity:Price:MSRP: $96.95Now: $87.26Was: $96.95Subtotal: -
On Sale
ATHENA Race Gasket Kit - KTM R2706-037
ATHENA
MSRP: $80.95Now: $72.86Was: $80.95Specifically designed for the pro, semi-pro and amateur rider who freshens up their engine prior to a race or during mid-season, Kits include a top-of-the line MLSS head gasket and two or more premium-quality base gaskets of different thicknesses to...9343160- SKU:
- 9343160
- Weight:
- 4.00 LBS
MSRP: $80.95Now: $72.86Was: $80.95Qty in Cart: 0Quantity:Price:MSRP: $80.95Now: $72.86Was: $80.95Subtotal: -
On Sale
ATHENA Race Gasket Kit - YZ450F R4856-188
ATHENA
MSRP: $86.95Now: $78.26Was: $86.95ATHENA Race Gasket Kit YZ450F R4856-188Specifically designed for the pro, semi-pro and amateur rider who freshens up their engine prior to a race or during mid-season, Kits include a top-of-the line MLSS head gasket and two or more premium-quality base...9343163- SKU:
- 9343163
- Availability:
- Ships Same Business Day
- Weight:
- 0.24 LBS
- MATERIAL:
- RUBBER
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TOP END
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET KIT
- STYLE:
- RACE
MSRP: $86.95Now: $78.26Was: $86.95 -
On Sale
ATHENA Top End Gasket Kit - Kawasaki P400250600065
ATHENA
MSRP: $47.95Now: $43.16Was: $47.95ATHENA Top End Gasket Kit Kawasaki P400250600065Specifically designed for the pro, semi-pro and amateur rider who freshens up their engine prior to a race or during midseason. Gives the rider a choice of using standard gas with stock compression, or race...9343164- SKU:
- 9343164
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- PRODUCT NAME:
- GASKET KIT
- TYPE:
- TOP END
- RIDING STYLE:
- OFF-ROAD
- ENGINE TYPE:
- 2-STROKE
- UNITS:
- KIT
MSRP: $47.95Now: $43.16Was: $47.95 -
On Sale
ATHENA Complete Gasket Kit - Kawasaki P400250900065
ATHENA
MSRP: $124.95Now: $112.46Was: $124.95ATHENA Complete Gasket Kit Kawasaki P400250900065Superior-quality gasket sets from Athena, Head gaskets feature rubber-coated spring steel construction, Soft steel base gaskets are rubber coated, Steel core materials feature high springback and superior...9343165- SKU:
- 9343165
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- UNITS:
- KIT
- ENGINE TYPE:
- 2-STROKE
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
MSRP: $124.95Now: $112.46Was: $124.95 -
On Sale
ATHENA Top End Gasket Kit - Kawasaki P400250600030
ATHENA
MSRP: $44.95Now: $40.46Was: $44.95ATHENA Top End Gasket Kit Kawasaki P400250600030Specifically designed for the pro, semi-pro and amateur rider who freshens up their engine prior to a race or during midseason. Gives the rider a choice of using standard gas with stock compression, or race...9343166- SKU:
- 9343166
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- ENGINE TYPE:
- 4-STROKE
- PRODUCT NAME:
- GASKET KIT
- TYPE:
- TOP END
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
MSRP: $44.95Now: $40.46Was: $44.95 -
On Sale
ATHENA Complete Gasket Kit - KTM P400270900063
ATHENA
MSRP: $238.95Now: $215.06Was: $238.95ATHENA Complete Gasket Kit KTM P400270900063Superior-quality gasket sets from Athena, Head gaskets feature rubber-coated spring steel construction, Soft steel base gaskets are rubber coated, Steel core materials feature high springback and superior...9343168- SKU:
- 9343168
- Availability:
- Ships Same Business Day
- Weight:
- 0.63 LBS
- ENGINE TYPE:
- 4-STROKE
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- UNITS:
- KIT
MSRP: $238.95Now: $215.06Was: $238.95Qty in Cart: 0Quantity:Price:MSRP: $238.95Now: $215.06Was: $238.95Subtotal: -
On Sale
ATHENA Top End Gasket Kit - KTM P400270600072
ATHENA
MSRP: $140.95Now: $126.86Was: $140.95ATHENA Top End Gasket Kit KTM P400270600072Specifically designed for the pro, semi-pro and amateur rider who freshens up their engine prior to a race or during midseason. Gives the rider a choice of using standard gas with stock compression, or race gas...9343169- SKU:
- 9343169
- Availability:
- Ships Same Business Day
- Weight:
- 0.26 LBS
- PRODUCT NAME:
- GASKET KIT
- UNITS:
- KIT
- ENGINE TYPE:
- 4-STROKE
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TOP END
MSRP: $140.95Now: $126.86Was: $140.95 -
On Sale
ATHENA Top End Gasket Kit - Yamaha P400485600188
ATHENA
MSRP: $105.95Now: $95.36Was: $105.95ATHENA Top End Gasket Kit Yamaha P400485600188Specifically designed for the pro, semi-pro and amateur rider who freshens up their engine prior to a race or during midseason. Gives the rider a choice of using standard gas with stock compression, or race...9343173- SKU:
- 9343173
- Availability:
- Ships Same Business Day
- Weight:
- 0.23 LBS
- ENGINE TYPE:
- 4-STROKE
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TOP END
- UNITS:
- KIT
MSRP: $105.95Now: $95.36Was: $105.95 -
On Sale
ATHENA Complete Gasket Kit - Yamaha P400485900188
ATHENA
MSRP: $196.95Now: $177.26Was: $196.95ATHENA Complete Gasket Kit Yamaha P400485900188Superior-quality gasket sets from Athena, Head gaskets feature rubber-coated spring steel construction, Soft steel base gaskets are rubber coated, Steel core materials feature high springback and superior...9343174- SKU:
- 9343174
- Availability:
- Ships Same Business Day
- Weight:
- 0.52 LBS
- ENGINE TYPE:
- 4-STROKE
- PRODUCT NAME:
- GASKET KIT
- TYPE:
- COMPLETE
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
MSRP: $196.95Now: $177.26Was: $196.95 -
On Sale
ATHENA Complete Gasket Kit - Husqvarna P400270850074
ATHENA
MSRP: $256.95Now: $231.26Was: $256.95Superior-quality gasket sets from Athena, Head gaskets feature rubber-coated spring steel construction, Soft steel base gaskets are rubber coated, Steel core materials feature high springback and superior tensile strength, Revolutionary transparent...9343474- SKU:
- 9343474
- Weight:
- 10.00 LBS
MSRP: $256.95Now: $231.26Was: $256.95Qty in Cart: 0Quantity:Price:MSRP: $256.95Now: $231.26Was: $256.95Subtotal: -
On Sale
ATHENA Top End Gasket Kit - Husqvarna P400270600074
ATHENA
MSRP: $131.95Now: $118.76Was: $131.95Specifically designed for the pro, semi-pro and amateur rider who freshens up their engine prior to a race or during midseason. Gives the rider a choice of using standard gas with stock compression, or race gas with a higher compression. Kits do not...9343476- SKU:
- 9343476
- Weight:
- 4.00 LBS
MSRP: $131.95Now: $118.76Was: $131.95Qty in Cart: 0Quantity:Price:MSRP: $131.95Now: $118.76Was: $131.95Subtotal: -
On Sale
ATHENA Water Pump Gasket Kit - Suzuki P400510470005
ATHENA
MSRP: $40.95Now: $36.86Was: $40.95ATHENA Water Pump Gasket Kit Suzuki P400510470005Include water pump gasket, clutch cover gasket, water pump shaft oil seals and washers, Kit contents will vary slightly based on application, Kits do not contain replacement bearings9345162- SKU:
- 9345162
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- TYPE:
- WATER PUMP
- UNITS:
- KIT
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- GASKET KIT
MSRP: $40.95Now: $36.86Was: $40.95Qty in Cart: 0Quantity:Price:MSRP: $40.95Now: $36.86Was: $40.95Subtotal: -
On Sale
ATHENA Cylinder Kit - YZ125 - 58mm P400485100030
ATHENA
MSRP: $1,025.95Now: $923.36Was: $1,025.95ATHENA Cylinder Kit YZ125 58mm P400485100030Kits include aluminum cylinder with nickel-carbide coating designed with larger water jackets, Forged piston with molybdenum coating, Special gasket kit, Easy-to-follow step-by-step installation instructions,...9310146- SKU:
- 9310146
- Availability:
- Ships Same Business Day
- Weight:
- 5.16 LBS
- CYLINDER BORE COATING:
- NICKEL-CARBIDE
- DISPLACEMENT:
- 144 CC
- ENGINE TYPE:
- 2-STROKE
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- BORE SIZE METRIC:
- 58.00 MM
- MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- CYLINDER KIT
- STYLE:
- BIG BORE
MSRP: $1,025.95Now: $923.36Was: $1,025.95 -
On Sale
ATHENA Cylinder Kit - YZ85 - 112CC P400485100039
ATHENA
MSRP: $1,069.95Now: $962.96Was: $1,069.95ATHENA Cylinder Kit YZ85 112CC P400485100039Kits include aluminum cylinder with nickel-carbide coating designed with larger water jackets, Forged piston with molybdenum coating, Special gasket kit, Easy-to-follow step-by-step installation instructions,...9310474- SKU:
- 9310474
- Availability:
- Ships Same Business Day
- Weight:
- 9.45 LBS
MSRP: $1,069.95Now: $962.96Was: $1,069.95Qty in Cart: 0Quantity:Price:MSRP: $1,069.95Now: $962.96Was: $1,069.95Subtotal: -
On Sale
ATHENA Piston Kit S5F08300003A
ATHENA
MSRP: $233.95Now: $210.56Was: $233.95ATHENA Piston Kit S5F08300003AIncludes rings, clips and pin, Easy-to-follow step-by-step installation instructions9100310- SKU:
- 9100310
- Availability:
- Ships Same Business Day
- Weight:
- 0.60 LBS
MSRP: $233.95Now: $210.56Was: $233.95Qty in Cart: 0Quantity:Price:MSRP: $233.95Now: $210.56Was: $233.95Subtotal:
