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
- Subtotal
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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,...09310307- SKU:
- 09310307
- 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,...09310440- SKU:
- 09310440
- 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,...09310473- SKU:
- 09310473
- 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...09346689- SKU:
- 09346689
- 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 -
On Sale
ATHENA Top End Gasket Kit - KTM SX85 P400270600088
ATHENA
MSRP: $94.95Now: $85.46Was: $94.95ATHENA Top End Gasket Kit KTM SX85 P400270600088Specifically 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...09346189- SKU:
- 09346189
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- TYPE:
- TOP END
MSRP: $94.95Now: $85.46Was: $94.95Qty in Cart: 0Quantity:Price:MSRP: $94.95Now: $85.46Was: $94.95Subtotal: -
On Sale
ATHENA Complete Gasket Kit - YZF450 P400485900197
ATHENA
MSRP: $155.95Now: $140.36Was: $155.95ATHENA Complete Gasket Kit YZF450 P400485900197Head 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...09346208- SKU:
- 09346208
- Availability:
- Ships Same Business Day
- Weight:
- 0.55 LBS
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- UNITS:
- KIT
MSRP: $155.95Now: $140.36Was: $155.95 -
On Sale
ATHENA Top End Gasket Kit - Yamaha P400485600197
ATHENA
MSRP: $60.55Now: $54.50Was: $60.55ATHENA Top End Gasket Kit Yamaha P400485600197Specifically 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...09346215- SKU:
- 09346215
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- TYPE:
- TOP END
- ENGINE TYPE:
- 4-STROKE
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
MSRP: $60.55Now: $54.50Was: $60.55Qty in Cart: 0Quantity:Price:MSRP: $60.55Now: $54.50Was: $60.55Subtotal: -
On Sale
ATHENA Top End Gasket Kit - Honda P400210600319
ATHENA
MSRP: $63.95Now: $57.56Was: $63.95ATHENA Top End Gasket Kit Honda P400210600319Specifically 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...09346346- SKU:
- 09346346
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TOP END
- UNITS:
- KIT
MSRP: $63.95Now: $57.56Was: $63.95 -
On Sale
ATHENA Complete Gasket Kit - Honda P400210900319
ATHENA
MSRP: $188.95Now: $170.06Was: $188.95ATHENA Complete Gasket Kit Honda P400210900319Head 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...09346347- SKU:
- 09346347
- Availability:
- Ships Same Business Day
- Weight:
- 0.55 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET KIT
MSRP: $188.95Now: $170.06Was: $188.95 -
On Sale
ATHENA Top End Gasket Kit - Honda P400210600320
ATHENA
MSRP: $78.95Now: $71.06Was: $78.95ATHENA Top End Gasket Kit Honda P400210600320Specifically 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...09346348- SKU:
- 09346348
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- TYPE:
- TOP END
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
MSRP: $78.95Now: $71.06Was: $78.95 -
On Sale
ATHENA Complete Gasket Kit - Honda P400210900320
ATHENA
MSRP: $199.95Now: $179.96Was: $199.95ATHENA Complete Gasket Kit Honda P400210900320Head 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...09346349- SKU:
- 09346349
- Availability:
- Ships Same Business Day
- Weight:
- 0.55 LBS
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- UNITS:
- KIT
MSRP: $199.95Now: $179.96Was: $199.95 -
On Sale
ATHENA Complete Gasket Kit - Yamaha P400485900198
ATHENA
MSRP: $93.95Now: $84.56Was: $93.95ATHENA Complete Gasket Kit Yamaha P400485900198Head 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...09346358- SKU:
- 09346358
- Availability:
- Ships Same Business Day
- Weight:
- 0.35 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET KIT
MSRP: $93.95Now: $84.56Was: $93.95 -
On Sale
ATHENA Top End Gasket Kit - Yamaha P400485600199
ATHENA
MSRP: $29.95Now: $26.96Was: $29.95ATHENA Top End Gasket Kit Yamaha P400485600199Specifically 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...09346359- SKU:
- 09346359
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- TYPE:
- TOP END
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
MSRP: $29.95Now: $26.96Was: $29.95 -
On Sale
ATHENA Complete Gasket Kit - Yamaha P400485900199
ATHENA
MSRP: $93.95Now: $84.56Was: $93.95ATHENA Complete Gasket Kit Yamaha P400485900199Head 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...09346360- SKU:
- 09346360
- Availability:
- Ships Same Business Day
- Weight:
- 0.35 LBS
- PRODUCT NAME:
- GASKET KIT
- TYPE:
- COMPLETE
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
MSRP: $93.95Now: $84.56Was: $93.95 -
On Sale
ATHENA Top End Gasket Kit - Yamaha P400485600212
ATHENA
MSRP: $68.95Now: $62.06Was: $68.95ATHENA Top End Gasket Kit Yamaha P400485600212Specifically 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...09346361- SKU:
- 09346361
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- TYPE:
- TOP END
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- ENGINE TYPE:
- 4-STROKE
- PRODUCT NAME:
- GASKET KIT
MSRP: $68.95Now: $62.06Was: $68.95 -
On Sale
ATHENA Complete Gasket Kit - Yamaha P400485900212
ATHENA
MSRP: $174.95Now: $157.46Was: $174.95ATHENA Complete Gasket Kit Yamaha P400485900212Head 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...09346362- SKU:
- 09346362
- Availability:
- Ships Same Business Day
- Weight:
- 0.40 LBS
- ENGINE TYPE:
- 4-STROKE
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- UNITS:
- KIT
MSRP: $174.95Now: $157.46Was: $174.95 -
On Sale
ATHENA Race Gasket Kit - Honda R2106-319
ATHENA
MSRP: $66.95Now: $60.26Was: $66.95ATHENA Race Gasket Kit Honda R2106-319Specifically 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...09346365- SKU:
- 09346365
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- TYPE:
- TOP END
- PRODUCT NAME:
- GASKET KIT
- STYLE:
- RACE
MSRP: $66.95Now: $60.26Was: $66.95 -
On Sale
ATHENA Race Gasket Kit - KTM/Husqvarna R2706-090
ATHENA
MSRP: $62.95Now: $56.66Was: $62.95ATHENA Race Gasket Kit KTM/Husqvarna R2706-090Specifically 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...09346367- SKU:
- 09346367
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- STYLE:
- RACE
- TYPE:
- TOP END
- UNITS:
- KIT
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- GASKET KIT
MSRP: $62.95Now: $56.66Was: $62.95Qty in Cart: 0Quantity:Price:MSRP: $62.95Now: $56.66Was: $62.95Subtotal: -
On Sale
ATHENA Race Gasket Kit - Kawasaki R2506-068
ATHENA
MSRP: $64.95Now: $58.46Was: $64.95ATHENA Race Gasket Kit Kawasaki R2506-068Specifically 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...09346368- SKU:
- 09346368
- Availability:
- Ships Same Business Day
- Weight:
- 0.35 LBS
- PRODUCT NAME:
- GASKET KIT
- STYLE:
- RACE
- TYPE:
- TOP END
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
MSRP: $64.95Now: $58.46Was: $64.95 -
On Sale
ATHENA Race Gasket Kit - Yamaha R4856-198
ATHENA
MSRP: $23.95Now: $21.56Was: $23.95ATHENA Race Gasket Kit Yamaha R4856-198Specifically 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...09346369- SKU:
- 09346369
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
- PRODUCT NAME:
- GASKET KIT
- STYLE:
- RACE
- TYPE:
- TOP END
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
MSRP: $23.95Now: $21.56Was: $23.95
