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
ATHENA Complete Gasket Kit - Kawasaki P400250850029
ATHENA
MSRP: $133.95Now: $120.56Was: $133.95ATHENA Complete Gasket Kit Kawasaki P400250850029Superior-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...9343042- SKU:
- 9343042
- Availability:
- Ships Same Business Day
- Weight:
- 0.39 LBS
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- ATV
- TYPE:
- COMPLETE
- ENGINE TYPE:
- -
- UNITS:
- KIT
MSRP: $133.95Now: $120.56Was: $133.95Qty in Cart: 0Quantity:Price:MSRP: $133.95Now: $120.56Was: $133.95Subtotal: -
On Sale
ATHENA Complete Gasket Kit - Yamaha P400485850078
ATHENA
MSRP: $148.95Now: $134.06Was: $148.95ATHENA Complete Gasket Kit Yamaha P400485850078Superior-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...9343045- SKU:
- 9343045
- Availability:
- Ships Same Business Day
- Weight:
- 0.49 LBS
- RIDING STYLE:
- ATV
- TYPE:
- COMPLETE
- ENGINE TYPE:
- -
- PRODUCT NAME:
- GASKET KIT
- UNITS:
- KIT
MSRP: $148.95Now: $134.06Was: $148.95 -
On Sale
ATHENA Complete Gasket Kit - Yamaha P400485850156
ATHENA
MSRP: $164.95Now: $148.46Was: $164.95ATHENA Complete Gasket Kit Yamaha P400485850156Superior-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...9343046- SKU:
- 9343046
- Availability:
- Ships Same Business Day
- Weight:
- 0.46 LBS
- UNITS:
- KIT
- ENGINE TYPE:
- -
- RIDING STYLE:
- UTV
- TYPE:
- COMPLETE
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- ATV
MSRP: $164.95Now: $148.46Was: $164.95Qty in Cart: 0Quantity:Price:MSRP: $164.95Now: $148.46Was: $164.95Subtotal: -
On Sale
ATHENA Gasket Kit - YZ125 LC - 58 mm P400485160015
ATHENA
MSRP: $69.95Now: $62.96Was: $69.95ATHENA Gasket Kit YZ125 LC 58 mm P400485160015Kits 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,...9343117- SKU:
- 9343117
- Availability:
- Ships Same Business Day
- Weight:
- 0.19 LBS
- DISPLACEMENT:
- 144 CC
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- BORE SIZE:
- 58,00 MM
- BORE SIZE METRIC:
- 58.00 MM
- PRODUCT NAME:
- GASKET KIT
- TYPE:
- TOP END
MSRP: $69.95Now: $62.96Was: $69.95 -
On Sale
ATHENA Complete Gasket Kit P400270160067
ATHENA
MSRP: $56.95Now: $51.26Was: $56.95ATHENA Complete Gasket Kit P400270160067Kits 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...9343157- SKU:
- 9343157
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- BORE SIZE:
- 82,00 MM
- BORE SIZE METRIC:
- 82.00 MM
- DISPLACEMENT:
- 276 CC
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TOP END
- UNITS:
- KIT
MSRP: $56.95Now: $51.26Was: $56.95 -
On Sale
ATHENA Race Gasket Kit - CRF110F R2106-304
ATHENA
MSRP: $26.95Now: $24.26Was: $26.95Specifically 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...9343158- SKU:
- 9343158
- Weight:
- 2.00 LBS
MSRP: $26.95Now: $24.26Was: $26.95Qty in Cart: 0Quantity:Price:MSRP: $26.95Now: $24.26Was: $26.95Subtotal: -
On Sale
ATHENA Top End Gasket Kit - Yamaha P400485600187
ATHENA
MSRP: $86.95Now: $78.26Was: $86.95ATHENA Top End Gasket Kit Yamaha P400485600187Specifically 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...9343171- SKU:
- 9343171
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TOP END
- UNITS:
- KIT
- ENGINE TYPE:
- 4-STROKE
- PRODUCT NAME:
- GASKET KIT
MSRP: $86.95Now: $78.26Was: $86.95 -
On Sale
ATHENA Complete Gasket Kit - Yamaha P400485900187
ATHENA
MSRP: $197.95Now: $178.16Was: $197.95ATHENA Complete Gasket Kit Yamaha P400485900187Superior-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...9343172- SKU:
- 9343172
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
- ENGINE TYPE:
- 4-STROKE
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET KIT
MSRP: $197.95Now: $178.16Was: $197.95 -
On Sale
ATHENA Complete Gasket Kit - Honda P400210850304
ATHENA
MSRP: $82.95Now: $74.66Was: $82.95ATHENA Complete Gasket Kit Honda P400210850304Superior-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...9344819- SKU:
- 9344819
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- PRODUCT NAME:
- GASKET KIT
- ENGINE TYPE:
- -
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- UNITS:
- KIT
MSRP: $82.95Now: $74.66Was: $82.95Qty in Cart: 0Quantity:Price:MSRP: $82.95Now: $74.66Was: $82.95Subtotal: -
On Sale
ATHENA Top End Gasket Kit - Honda P400210600195
ATHENA
MSRP: $100.95Now: $90.86Was: $100.95ATHENA Top End Gasket Kit Honda P400210600195Specifically 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...9344869- SKU:
- 9344869
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- ATV
- TYPE:
- TOP END
- UNITS:
- KIT
MSRP: $100.95Now: $90.86Was: $100.95Qty in Cart: 0Quantity:Price:MSRP: $100.95Now: $90.86Was: $100.95Subtotal: -
On Sale
ATHENA Complete Gasket Kit - Honda P400210850195
ATHENA
MSRP: $148.95Now: $134.06Was: $148.95ATHENA Complete Gasket Kit Honda P400210850195Superior-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...9344870- SKU:
- 9344870
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
- RIDING STYLE:
- ATV
- TYPE:
- COMPLETE
- UNITS:
- KIT
- ENGINE TYPE:
- -
- PRODUCT NAME:
- GASKET KIT
MSRP: $148.95Now: $134.06Was: $148.95Qty in Cart: 0Quantity:Price:MSRP: $148.95Now: $134.06Was: $148.95Subtotal: -
On Sale
ATHENA Complete Gasket Kit - Polaris P400485850006
ATHENA
MSRP: $14.95Now: $13.46Was: $14.95ATHENA Complete Gasket Kit Polaris P400485850006Superior-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...9344887- SKU:
- 9344887
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- TYPE:
- COMPLETE
- UNITS:
- KIT
- ENGINE TYPE:
- -
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- ATV
MSRP: $14.95Now: $13.46Was: $14.95 -
On Sale
ATHENA Complete Gasket Kit - Polaris P400427870017
ATHENA
MSRP: $154.95Now: $139.46Was: $154.95ATHENA Complete Gasket Kit Polaris P400427870017Superior-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...9344898- SKU:
- 9344898
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- ATV
- ENGINE TYPE:
- -
- TYPE:
- COMPLETE
- UNITS:
- KIT
MSRP: $154.95Now: $139.46Was: $154.95 -
On Sale
ATHENA Gasket Kit - TRX450R P400210160014
ATHENA
MSRP: $130.95Now: $117.86Was: $130.95ATHENA Gasket Kit TRX450R P400210160014Kits 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...9344911- SKU:
- 9344911
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- BORE SIZE METRIC:
- 100.00 MM
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- ATV
- TYPE:
- TOP END
- UNITS:
- KIT
- BORE SIZE:
- 100,00 MM
MSRP: $130.95Now: $117.86Was: $130.95 -
On Sale
ATHENA Water Pump Gasket Kit - Suzuki P400510470006
ATHENA
MSRP: $35.95Now: $32.36Was: $35.95Include 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 bearings9345163- SKU:
- 9345163
- Weight:
- 3.00 LBS
MSRP: $35.95Now: $32.36Was: $35.95Qty in Cart: 0Quantity:Price:MSRP: $35.95Now: $32.36Was: $35.95Subtotal: -
On Sale
ATHENA Water Pump Gasket Kit - Yamaha P400485470001
ATHENA
MSRP: $41.95Now: $37.76Was: $41.95ATHENA Water Pump Gasket Kit Yamaha P400485470001Include 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 bearings9345166- SKU:
- 9345166
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- WATER PUMP
- UNITS:
- KIT
MSRP: $41.95Now: $37.76Was: $41.95 -
On Sale
ATHENA Cylinder Kit - CRF150R - 69mm P400210100023
ATHENA
MSRP: $695.95Now: $626.36Was: $695.95ATHENA Cylinder Kit CRF150R 69mm P400210100023Kits 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,...9310307- SKU:
- 9310307
- Availability:
- Ships Same Business Day
- Weight:
- 3.14 LBS
- DISPLACEMENT:
- 163.5 CC
- ENGINE TYPE:
- 4-STROKE
- BORE SIZE METRIC:
- 69.00 MM
- PRODUCT NAME:
- CYLINDER KIT
- RIDING STYLE:
- OFF-ROAD
- STYLE:
- BIG BORE
- UNITS:
- KIT
- MATERIAL:
- ALUMINUM
- CYLINDER BORE COATING:
- NICKEL-CARBIDE
MSRP: $695.95Now: $626.36Was: $695.95 -
On Sale
ATHENA Cylinder Kit - YZ250 - 72mm P400485100042
ATHENA
MSRP: $1,497.95Now: $1,348.16Was: $1,497.95ATHENA Cylinder Kit YZ250 72mm P400485100042Kits 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,...9310440- SKU:
- 9310440
- Availability:
- Ships Same Business Day
- Weight:
- 9.00 LBS
- BORE SIZE METRIC:
- 72.00 MM
- CYLINDER BORE COATING:
- NICKEL-CARBIDE
- ENGINE TYPE:
- 2-STROKE
- DISPLACEMENT:
- 293 CC
- MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- CYLINDER KIT
- RIDING STYLE:
- OFF-ROAD
- STYLE:
- BIG BORE
- UNITS:
- KIT
MSRP: $1,497.95Now: $1,348.16Was: $1,497.95 -
On Sale
ATHENA Cylinder Kit - YZ85 - 105CC P400485100038
ATHENA
MSRP: $819.95Now: $737.96Was: $819.95ATHENA Cylinder Kit YZ85 105CC P400485100038Kits 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,...9310473- SKU:
- 9310473
- Availability:
- Ships Same Business Day
- Weight:
- 4.33 LBS
- CYLINDER BORE COATING:
- NICKEL-CARBIDE
- UNITS:
- KIT
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- CYLINDER KIT
- STYLE:
- BIG BORE
- BORE SIZE METRIC:
- 53.00 MM
- DISPLACEMENT:
- 105 CC
- ENGINE TYPE:
- 2-STROKE
- MATERIAL:
- ALUMINUM
MSRP: $819.95Now: $737.96Was: $819.95 -
On Sale
ATHENA Top End Gasket Kit - Yamaha P400485160076
ATHENA
MSRP: $25.95Now: $23.36Was: $25.95ATHENA Top End Gasket Kit Yamaha P400485160076Specifically 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...9346689- SKU:
- 9346689
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- UNITS:
- KIT
- TYPE:
- TOP END
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- OFF-ROAD
MSRP: $25.95Now: $23.36Was: $25.95
