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!
- Product
- Qty in Cart
- Quantity
- Price
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On Sale
ATHENA Cylinder Kit - Honda - Stock P400210100059
ATHENA
MSRP: $647.95Now: $583.16Was: $647.95ATHENA Cylinder Kit Honda Stock P400210100059Kits 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,...09310957- SKU:
- 09310957
- Availability:
- Ships Same Business Day
- Weight:
- 4.05 LBS
- PRODUCT NAME:
- CYLINDER KIT
- DISPLACEMENT:
- 450 CC
- RIDING STYLE:
- OFF-ROAD
- STYLE:
- STOCK BORE
- CYLINDER BORE COATING:
- NICKEL-CARBIDE
- UNITS:
- KIT
- BORE SIZE METRIC:
- 96.00 MM
- ENGINE TYPE:
- 4-STROKE
- MATERIAL:
- ALUMINUM
MSRP: $647.95Now: $583.16Was: $647.95 -
On Sale
ATHENA Cylinder Kit - Kawasaki - Stock P400250100022
ATHENA
MSRP: $647.95Now: $583.16Was: $647.95ATHENA Cylinder Kit Kawasaki Stock P400250100022Kits 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...09310961- SKU:
- 09310961
- Availability:
- Ships Same Business Day
- Weight:
- 4.40 LBS
- ENGINE TYPE:
- 4-STROKE
- CYLINDER BORE COATING:
- NICKEL-CARBIDE
- BORE SIZE METRIC:
- 96.00 MM
- DISPLACEMENT:
- 450 CC
- MATERIAL:
- ALUMINUM
- STYLE:
- STOCK BORE
- PRODUCT NAME:
- CYLINDER KIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
MSRP: $647.95Now: $583.16Was: $647.95 -
On Sale
ATHENA Cylinder Kit - Yamaha - Stock P400485100076
ATHENA
MSRP: $855.95Now: $770.36Was: $855.95ATHENA Cylinder Kit Yamaha Stock P400485100076Kits 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,...09310975- SKU:
- 09310975
- Availability:
- Ships Same Business Day
- Weight:
- 4.85 LBS
- CYLINDER BORE COATING:
- NICKEL-CARBIDE
- ENGINE TYPE:
- 2-STROKE
- MATERIAL:
- ALUMINUM
- STYLE:
- STOCK BORE
- BORE SIZE METRIC:
- 47.50 MM
- DISPLACEMENT:
- 85 CC
- PRODUCT NAME:
- CYLINDER KIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
MSRP: $855.95Now: $770.36Was: $855.95 -
On Sale
ATHENA Piston Kit S4C04750005A
ATHENA
MSRP: $109.95Now: $98.96Was: $109.95ATHENA Piston Kit S4C04750005ATwo-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...09310976- SKU:
- 09310976
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- ENGINE TYPE:
- 2-STROKE
- PISTON MATERIAL:
- 4032 ALUMINUM ALLOY
- RIDING STYLE:
- OFF-ROAD
- COMPRESSION RATIO IMPERIAL:
- STOCK
- UNITS:
- KIT
- PRODUCT NAME:
- PISTON KIT
- TYPE:
- B
- BORE SIZE METRIC:
- 47.45 MM
MSRP: $109.95Now: $98.96Was: $109.95 -
On Sale
ATHENA Gasket Kit - KX125LC P400250160008
ATHENA
MSRP: $102.95Now: $92.66Was: $102.95ATHENA Gasket Kit KX125LC P400250160008Kits 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...09342135- SKU:
- 09342135
- Availability:
- Ships Same Business Day
- Weight:
- 0.24 LBS
- BORE SIZE:
- 58,00 MM
- DISPLACEMENT:
- 144 CC
- UNITS:
- KIT
- RIDING STYLE:
- OFF-ROAD
- BORE SIZE METRIC:
- 58.00 MM
- PRODUCT NAME:
- GASKET KIT
- TYPE:
- TOP END
MSRP: $102.95Now: $92.66Was: $102.95 -
On Sale
ATHENA Gasket Kit - KX250F P400250160010
ATHENA
MSRP: $54.95Now: $49.46Was: $54.95ATHENA Gasket Kit KX250F P400250160010Kits 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...09342136- SKU:
- 09342136
- Availability:
- Ships Same Business Day
- Weight:
- 0.17 LBS
- DISPLACEMENT:
- 290 CC
- PRODUCT NAME:
- GASKET KIT
- TYPE:
- TOP END
- BORE SIZE:
- 83,00 MM
- BORE SIZE METRIC:
- 83.00 MM
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
MSRP: $54.95Now: $49.46Was: $54.95 -
On Sale
ATHENA Gasket Kit - KXF450 P400250160012
ATHENA
MSRP: $85.95Now: $77.36Was: $85.95ATHENA Gasket Kit KXF450 P400250160012Kits 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...09342552- SKU:
- 09342552
- Availability:
- Ships Same Business Day
- Weight:
- 0.22 LBS
- TYPE:
- TOP END
- BORE SIZE:
- 100,00 MM
- PRODUCT NAME:
- GASKET KIT
- BORE SIZE METRIC:
- 100.00 MM
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
MSRP: $85.95Now: $77.36Was: $85.95 -
On Sale
ATHENA Gasket Kit - WR250R/X - 83 mm P400485160017
ATHENA
MSRP: $84.95Now: $76.46Was: $84.95ATHENA Gasket Kit WR250R/X 83 mm P400485160017Kits 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,...09341846- SKU:
- 09341846
- Availability:
- Ships Same Business Day
- Weight:
- 0.22 LBS
- BORE SIZE METRIC:
- 83.00 MM
- DISPLACEMENT:
- 290 CC
- TYPE:
- TOP END
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- BORE SIZE:
- 83,00 MM
MSRP: $84.95Now: $76.46Was: $84.95 -
On Sale
ATHENA Top End Gasket Kit - KTM P400270600047
ATHENA
MSRP: $69.95Now: $62.96Was: $69.95ATHENA Top End Gasket Kit KTM P400270600047Specifically 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...09341981- SKU:
- 09341981
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- GASKET KIT
- MATERIAL:
- RUBBER
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- TYPE:
- TOP END
MSRP: $69.95Now: $62.96Was: $69.95 -
On Sale
ATHENA Complete Gasket Kit - Husqvarna P400220850261
ATHENA
MSRP: $256.95Now: $231.26Was: $256.95ATHENA Complete Gasket Kit Husqvarna P400220850261Superior-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...09342788- SKU:
- 09342788
- Availability:
- Ships Same Business Day
- Weight:
- 0.51 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- UNITS:
- KIT
- ENGINE TYPE:
- -
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- GASKET KIT
MSRP: $256.95Now: $231.26Was: $256.95 -
On Sale
ATHENA Complete Gasket Kit - KX250 P400250850021
ATHENA
MSRP: $100.95Now: $90.86Was: $100.95ATHENA Complete Gasket Kit KX250 P400250850021Head gaskets feature rubber-coated spring steel construction, Soft steel base gaskets are rubber coated, Steel core materials feature high spring-back and superior tensile strength, Revolutionary transparent...09342790- SKU:
- 09342790
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET KIT
MSRP: $100.95Now: $90.86Was: $100.95 -
On Sale
ATHENA Complete Gasket Kit - KTM P400270850049
ATHENA
MSRP: $98.95Now: $89.06Was: $98.95ATHENA Complete Gasket Kit KTM P400270850049Superior-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...09342791- SKU:
- 09342791
- Availability:
- Ships Same Business Day
- Weight:
- 0.17 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- UNITS:
- KIT
- ENGINE TYPE:
- -
- PRODUCT NAME:
- GASKET KIT
MSRP: $98.95Now: $89.06Was: $98.95 -
On Sale
ATHENA Complete Gasket Kit - KTM P400270850028
ATHENA
MSRP: $122.95Now: $110.66Was: $122.95ATHENA Complete Gasket Kit KTM P400270850028Superior-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...09342792- SKU:
- 09342792
- Availability:
- Ships Same Business Day
- Weight:
- 0.37 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- RIDING STYLE:
- STREET
- ENGINE TYPE:
- -
- PRODUCT NAME:
- GASKET KIT
- UNITS:
- KIT
MSRP: $122.95Now: $110.66Was: $122.95 -
On Sale
ATHENA Race Gasket Kit - CRF250R R2106-245
ATHENA
MSRP: $55.95Now: $50.36Was: $55.95ATHENA Race Gasket Kit CRF250R R2106-245Specifically 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...09342807- SKU:
- 09342807
- Availability:
- Ships Same Business Day
- Weight:
- 0.23 LBS
- MATERIAL:
- RUBBER
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- MATERIAL:
- STEEL
- TYPE:
- TOP END
- PRODUCT NAME:
- GASKET KIT
- STYLE:
- RACE
MSRP: $55.95Now: $50.36Was: $55.95 -
On Sale
ATHENA Race Gasket Kit - RM65/KX65 R2506-008
ATHENA
MSRP: $23.95Now: $21.56Was: $23.95ATHENA Race Gasket Kit RM65/KX65 R2506-008Specifically 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...09342816- SKU:
- 09342816
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- MATERIAL:
- RUBBER
- TYPE:
- TOP END
- UNITS:
- KIT
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- GASKET KIT
- STYLE:
- RACE
MSRP: $23.95Now: $21.56Was: $23.95 -
On Sale
ATHENA Race Gasket Kit - KX250F R2506-047
ATHENA
MSRP: $58.95Now: $53.06Was: $58.95ATHENA Race Gasket Kit KX250F R2506-047Specifically 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...09342819- SKU:
- 09342819
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- STYLE:
- RACE
- TYPE:
- TOP END
- PRODUCT NAME:
- GASKET KIT
- MATERIAL:
- RUBBER
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
MSRP: $58.95Now: $53.06Was: $58.95 -
On Sale
ATHENA Top End Gasket Kit - Honda P400210600182
ATHENA
MSRP: $49.95Now: $44.96Was: $49.95ATHENA Top End Gasket Kit Honda P400210600182Specifically 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...09342902- SKU:
- 09342902
- Availability:
- Ships Same Business Day
- Weight:
- 0.17 LBS
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- TYPE:
- TOP END
MSRP: $49.95Now: $44.96Was: $49.95Qty in Cart: 0Quantity:Price:MSRP: $49.95Now: $44.96Was: $49.95Subtotal: -
On Sale
ATHENA Top End Gasket Kit - Kawasaki P400250600104
ATHENA
MSRP: $36.95Now: $33.26Was: $36.95ATHENA Top End Gasket Kit Kawasaki P400250600104Specifically 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...09342904- SKU:
- 09342904
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TOP END
- UNITS:
- KIT
MSRP: $36.95Now: $33.26Was: $36.95Qty in Cart: 0Quantity:Price:MSRP: $36.95Now: $33.26Was: $36.95Subtotal: -
On Sale
ATHENA Top End Gasket Kit - KTM P400270600043
ATHENA
MSRP: $50.95Now: $45.86Was: $50.95ATHENA Top End Gasket Kit KTM P400270600043Specifically 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...09342905- SKU:
- 09342905
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- RIDING STYLE:
- OFF-ROAD
- ENGINE TYPE:
- 2-STROKE
- PRODUCT NAME:
- GASKET KIT
- TYPE:
- TOP END
- UNITS:
- KIT
MSRP: $50.95Now: $45.86Was: $50.95 -
On Sale
ATHENA Gasket Kit - YZ85 P400485160023
ATHENA
MSRP: $38.95Now: $35.06Was: $38.95ATHENA Gasket Kit YZ85 P400485160023Kits 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...09342912- SKU:
- 09342912
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- TYPE:
- TOP END
- BORE SIZE METRIC:
- 53.00 MM
- PRODUCT NAME:
- GASKET KIT
- BORE SIZE:
- 53,00 MM
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
MSRP: $38.95Now: $35.06Was: $38.95
