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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- Qty in Cart
- Quantity
- Price
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On Sale
ATHENA Piston Kit S4F06640018C
ATHENA
MSRP: $187.95Now: $169.16Was: $187.95ATHENA Piston Kit S4F06640018CTwo-stroke pistons are made from 4032 silicium, Four-stroke pistons are made from 2618 silicium - the same material used to produce Formula 1 pistons, Both include 3% copper in materials for better heat resistance, All...09103894- SKU:
- 09103894
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- DISPLACEMENT:
- 249 CC
- PISTON MATERIAL:
- 4032 ALUMINUM ALLOY
- BORE SIZE METRIC:
- 66.36 MM
- ENGINE TYPE:
- 2-STROKE
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- STREET
- PISTON HEAD SHAPE:
- DOMED
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- C
- COMPRESSION RATIO IMPERIAL:
- STOCK
- UNITS:
- KIT
MSRP: $187.95Now: $169.16Was: $187.95 -
On Sale
ATHENA Piston Kit S4F07700006A
ATHENA
MSRP: $244.95Now: $220.46Was: $244.95ATHENA Piston Kit S4F07700006ATwo-stroke pistons are made from 4032 silicium, Four-stroke pistons are made from 2618 silicium - the same material used to produce Formula 1 pistons, Both include 3% copper in materials for better heat resistance, All...09103897- SKU:
- 09103897
- Availability:
- Ships Same Business Day
- Weight:
- 0.55 LBS
- COMPRESSION RATIO IMPERIAL:
- 13.4:1
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- A
- ENGINE TYPE:
- 4-STROKE
- PISTON HEAD SHAPE:
- DOMED
- UNITS:
- KIT
- DISPLACEMENT:
- 249 CC
- PISTON MATERIAL:
- FORGED 2618 ALUMINUM
- BORE SIZE METRIC:
- 76.95 MM
- PRODUCT NAME:
- PISTON KIT
MSRP: $244.95Now: $220.46Was: $244.95Qty in Cart: 0Quantity:Price:MSRP: $244.95Now: $220.46Was: $244.95Subtotal: -
On Sale
ATHENA Piston Kit S4C04850003B
ATHENA
MSRP: $119.95Now: $107.96Was: $119.95ATHENA Piston Kit S4C04850003BTwo-stroke pistons are made from 4032 silicium, Four-stroke pistons are made from 2618 silicium - the same material used to produce Formula 1 pistons, Both include 3% copper in materials for better heat resistance, All...09104655- SKU:
- 09104655
- Availability:
- Ships Same Business Day
- Weight:
- 0.35 LBS
- ENGINE TYPE:
- 2-STROKE
- PISTON MATERIAL:
- 4032 ALUMINUM ALLOY
- RIDING STYLE:
- OFF-ROAD
- BORE SIZE METRIC:
- 48.45 MM
- COMPRESSION RATIO IMPERIAL:
- STOCK
- PISTON HEAD SHAPE:
- DOMED
- UNITS:
- KIT
- DISPLACEMENT:
- 85 CC
- TYPE:
- B
- PRODUCT NAME:
- PISTON KIT
MSRP: $119.95Now: $107.96Was: $119.95 -
On Sale
ATHENA Complete Gasket Kit - Kawasaki P400250850030
ATHENA
MSRP: $66.95Now: $60.26Was: $66.95ATHENA Complete Gasket Kit Kawasaki P400250850030Superior-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...09341520- SKU:
- 09341520
- Availability:
- Ships Same Business Day
- Weight:
- 0.21 LBS
- PRODUCT NAME:
- GASKET KIT
- ENGINE TYPE:
- -
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- UNITS:
- KIT
MSRP: $66.95Now: $60.26Was: $66.95 -
On Sale
ATHENA Gasket Kit - KX65 - 50 mm P400250160007
ATHENA
MSRP: $40.95Now: $36.86Was: $40.95ATHENA Gasket Kit KX65 50 mm P400250160007Kits 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...09341533- SKU:
- 09341533
- Availability:
- Ships Same Business Day
- Weight:
- 0.07 LBS
- BORE SIZE METRIC:
- 50.00 MM
- RIDING STYLE:
- OFF-ROAD
- BORE SIZE:
- 50,00 MM
- PRODUCT NAME:
- GASKET KIT
- UNITS:
- KIT
- TYPE:
- TOP END
MSRP: $40.95Now: $36.86Was: $40.95 -
On Sale
ATHENA Gasket Kit - RMZ450 - 100 mm P400510160006
ATHENA
MSRP: $88.95Now: $80.06Was: $88.95ATHENA Gasket Kit RMZ450 100 mm P400510160006Kits 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,...09341538- SKU:
- 09341538
- Availability:
- Ships Same Business Day
- Weight:
- 0.17 LBS
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- OFF-ROAD
- BORE SIZE METRIC:
- 100.00 MM
- UNITS:
- KIT
- BORE SIZE:
- 100,00 MM
- TYPE:
- TOP END
MSRP: $88.95Now: $80.06Was: $88.95 -
On Sale
ATHENA Complete Gasket Kit - Kawasaki P400250850011
ATHENA
MSRP: $55.95Now: $50.36Was: $55.95ATHENA Complete Gasket Kit Kawasaki P400250850011Superior-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...09340204- SKU:
- 09340204
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- UNITS:
- KIT
- ENGINE TYPE:
- -
- PRODUCT NAME:
- GASKET KIT
MSRP: $55.95Now: $50.36Was: $55.95Qty in Cart: 0Quantity:Price:MSRP: $55.95Now: $50.36Was: $55.95Subtotal: -
On Sale
ATHENA Top End Gasket Kit P400250600015
ATHENA
MSRP: $32.95Now: $29.66Was: $32.95ATHENA Top End Gasket Kit P400250600015Specifically 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...09340205- SKU:
- 09340205
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- MATERIAL:
- RUBBER
- UNITS:
- KIT
- TYPE:
- TOP END
- ENGINE TYPE:
- 2-STROKE
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- OFF-ROAD
MSRP: $32.95Now: $29.66Was: $32.95Qty in Cart: 0Quantity:Price:MSRP: $32.95Now: $29.66Was: $32.95Subtotal: -
On Sale
ATHENA Top End Gasket Kit P400250600011
ATHENA
MSRP: $39.95Now: $35.96Was: $39.95ATHENA Top End Gasket Kit P400250600011Specifically 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...09340206- SKU:
- 09340206
- Availability:
- Ships Same Business Day
- Weight:
- 0.19 LBS
- TYPE:
- TOP END
- PRODUCT NAME:
- GASKET KIT
- UNITS:
- KIT
- MATERIAL:
- RUBBER
- RIDING STYLE:
- OFF-ROAD
MSRP: $39.95Now: $35.96Was: $39.95 -
On Sale
ATHENA Complete Gasket Kit - Suzuki P400510850034
ATHENA
MSRP: $40.95Now: $36.86Was: $40.95ATHENA Complete Gasket Kit Suzuki P400510850034Superior-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...09340207- SKU:
- 09340207
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- PRODUCT NAME:
- GASKET KIT
- ENGINE TYPE:
- -
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- UNITS:
- KIT
MSRP: $40.95Now: $36.86Was: $40.95 -
On Sale
ATHENA Complete Gasket Kit - Suzuki P400510850035
ATHENA
MSRP: $74.95Now: $67.46Was: $74.95ATHENA Complete Gasket Kit Suzuki P400510850035Superior-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...09340208- SKU:
- 09340208
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET KIT
- ENGINE TYPE:
- 2-STROKE
MSRP: $74.95Now: $67.46Was: $74.95 -
On Sale
ATHENA Top End Gasket Kit P400510600034
ATHENA
MSRP: $20.95Now: $18.86Was: $20.95ATHENA Top End Gasket Kit P400510600034Specifically 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...09340210- SKU:
- 09340210
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- PRODUCT NAME:
- GASKET KIT
- ENGINE TYPE:
- 2-STROKE
- MATERIAL:
- RUBBER
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TOP END
- UNITS:
- KIT
MSRP: $20.95Now: $18.86Was: $20.95 -
On Sale
ATHENA Top End Gasket Kit P400510600035
ATHENA
MSRP: $40.95Now: $36.86Was: $40.95ATHENA Top End Gasket Kit P400510600035Specifically 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...09340211- SKU:
- 09340211
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- ENGINE TYPE:
- 2-STROKE
- MATERIAL:
- RUBBER
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET KIT
- TYPE:
- TOP END
MSRP: $40.95Now: $36.86Was: $40.95 -
On Sale
ATHENA Complete Gasket Kit - Yamaha P400485850053
ATHENA
MSRP: $155.95Now: $140.36Was: $155.95ATHENA Complete Gasket Kit Yamaha P400485850053Superior-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...09340213- SKU:
- 09340213
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
- ENGINE TYPE:
- 4-STROKE
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- UNITS:
- KIT
MSRP: $155.95Now: $140.36Was: $155.95Qty in Cart: 0Quantity:Price:MSRP: $155.95Now: $140.36Was: $155.95Subtotal: -
On Sale
ATHENA Complete Gasket Kit - KTM P400270850003
ATHENA
MSRP: $26.95Now: $24.26Was: $26.95ATHENA Complete Gasket Kit KTM P400270850003Superior-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...09340216- SKU:
- 09340216
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET KIT
- ENGINE TYPE:
- -
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
MSRP: $26.95Now: $24.26Was: $26.95 -
On Sale
ATHENA Cylinder Kit - CRF230F P400210100054
ATHENA
MSRP: $348.95Now: $314.06Was: $348.95ATHENA Cylinder Kit CRF230F P400210100054Kits 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...09310662- SKU:
- 09310662
- Availability:
- Ships Same Business Day
- Weight:
- 4.75 LBS
- STYLE:
- BIG BORE
- CYLINDER BORE COATING:
- NICKEL-CARBIDE
- ENGINE TYPE:
- 4-STROKE
- BORE SIZE METRIC:
- 67.00 MM
- MATERIAL:
- ALUMINUM
- DISPLACEMENT:
- 233 CC
- PRODUCT NAME:
- CYLINDER KIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
MSRP: $348.95Now: $314.06Was: $348.95 -
On Sale
ATHENA Cylinder Kit - Suzuki RM-Z450 P400510100027
ATHENA
MSRP: $647.95Now: $583.16Was: $647.95ATHENA Cylinder Kit Suzuki RM-Z450 P400510100027Kits 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...09310678- SKU:
- 09310678
- Availability:
- Ships Same Business Day
- Weight:
- 4.05 LBS
- DISPLACEMENT:
- 450 CC
- MATERIAL:
- ALUMINUM
- STYLE:
- STOCK BORE
- PRODUCT NAME:
- CYLINDER KIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- ENGINE TYPE:
- 4-STROKE
- BORE SIZE METRIC:
- 96.00 MM
- CYLINDER BORE COATING:
- NICKEL-CARBIDE
MSRP: $647.95Now: $583.16Was: $647.95 -
On Sale
ATHENA Cylinder Kit - Suzuki RM-Z450 P400510100028
ATHENA
MSRP: $965.95Now: $869.36Was: $965.95ATHENA Cylinder Kit Suzuki RM-Z450 P400510100028Kits 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...09310679- SKU:
- 09310679
- Availability:
- Ships Same Business Day
- Weight:
- 3.80 LBS
- DISPLACEMENT:
- 490 CC
- MATERIAL:
- ALUMINUM
- CYLINDER BORE COATING:
- NICKEL-CARBIDE
- ENGINE TYPE:
- 4-STROKE
- BORE SIZE METRIC:
- 100.00 MM
- PRODUCT NAME:
- CYLINDER KIT
- RIDING STYLE:
- OFF-ROAD
- STYLE:
- BIG BORE
- UNITS:
- KIT
MSRP: $965.95Now: $869.36Was: $965.95 -
On Sale
ATHENA Cylinder Kit - Honda - Stock P400210100066
ATHENA
MSRP: $647.95Now: $583.16Was: $647.95ATHENA Cylinder Kit Honda Stock P400210100066Kits 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,...09310955- SKU:
- 09310955
- Availability:
- Ships Same Business Day
- Weight:
- 3.35 LBS
- DISPLACEMENT:
- 250 CC
- MATERIAL:
- ALUMINUM
- STYLE:
- STOCK BORE
- CYLINDER BORE COATING:
- NICKEL-CARBIDE
- ENGINE TYPE:
- 4-STROKE
- BORE SIZE METRIC:
- 79.00 MM
- PRODUCT NAME:
- CYLINDER KIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
MSRP: $647.95Now: $583.16Was: $647.95 -
On Sale
ATHENA Cylinder Kit - Honda - Big Bore P400210100067
ATHENA
MSRP: $978.95Now: $881.06Was: $978.95ATHENA Cylinder Kit Honda Big Bore P400210100067Kits 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...09310956- SKU:
- 09310956
- Availability:
- Ships Same Business Day
- Weight:
- 3.70 LBS
- DISPLACEMENT:
- 289 CC
- MATERIAL:
- ALUMINUM
- BORE SIZE METRIC:
- 82.00 MM
- PRODUCT NAME:
- CYLINDER KIT
- RIDING STYLE:
- OFF-ROAD
- STYLE:
- BIG BORE
- UNITS:
- KIT
- ENGINE TYPE:
- 4-STROKE
- CYLINDER BORE COATING:
- NICKEL-CARBIDE
MSRP: $978.95Now: $881.06Was: $978.95
