Dirt Bike Engine
Discover a full range of dirt bike engine components for rebuilding or upgrading your performance. From crankshafts to cylinder heads and piston kits, these precision-engineered components ensure reliable performance. For additional upgrades, check out our full selection of off-road dirt bike parts.
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- Qty in Cart
- Quantity
- Price
- Subtotal
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ATHENA Top End Gasket Kit - Kawasaki P400250600029
ATHENA
$119.95ATHENA Top End Gasket Kit Kawasaki P400250600029Specifically 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...09343028- SKU:
- 09343028
- Availability:
- Ships Same Business Day
- Weight:
- 0.21 LBS
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- ATV
- TYPE:
- TOP END
- MATERIAL:
- SILICONE
- UNITS:
- KIT
$119.95 -
ATHENA Top End Gasket Kit - Yamaha P400485600078
ATHENA
$117.95ATHENA Top End Gasket Kit Yamaha P400485600078Specifically 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...09343033- SKU:
- 09343033
- Availability:
- Ships Same Business Day
- Weight:
- 0.26 LBS
- RIDING STYLE:
- ATV
- TYPE:
- TOP END
- UNITS:
- KIT
- MATERIAL:
- SILICONE
- PRODUCT NAME:
- GASKET KIT
$117.95 -
ATHENA Top End Gasket Kit - Yamaha P400485600156
ATHENA
$131.95ATHENA Top End Gasket Kit Yamaha P400485600156Specifically 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...09343034- SKU:
- 09343034
- Availability:
- Ships Same Business Day
- Weight:
- 0.24 LBS
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- ATV
- TYPE:
- TOP END
- UNITS:
- KIT
$131.95Qty in Cart: 0Quantity:Price:$131.95Subtotal: -
ATHENA Complete Gasket Kit - Kawasaki P400250850029
ATHENA
$140.95ATHENA 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...09343042- SKU:
- 09343042
- Availability:
- Ships Same Business Day
- Weight:
- 0.39 LBS
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- ATV
- TYPE:
- COMPLETE
- ENGINE TYPE:
- -
- UNITS:
- KIT
$140.95 -
ATHENA Complete Gasket Kit - Yamaha P400485850078
ATHENA
$156.95ATHENA 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...09343045- SKU:
- 09343045
- Availability:
- Ships Same Business Day
- Weight:
- 0.49 LBS
- RIDING STYLE:
- ATV
- TYPE:
- COMPLETE
- ENGINE TYPE:
- -
- PRODUCT NAME:
- GASKET KIT
- UNITS:
- KIT
$156.95 -
ATHENA Complete Gasket Kit - Yamaha P400485850156
ATHENA
$173.95ATHENA 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...09343046- SKU:
- 09343046
- 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
$173.95 -
ATHENA Gasket Kit - YZ125 LC - 58 mm P400485160015
ATHENA
$81.95ATHENA 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,...09343117- SKU:
- 09343117
- 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
$81.95 -
ATHENA Complete Gasket Kit P400270160067
ATHENA
$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...09343157- SKU:
- 09343157
- 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
$56.95 -
ATHENA Top End Gasket Kit - Yamaha P400485600187
ATHENA
$91.95ATHENA 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...09343171- SKU:
- 09343171
- 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
$91.95Qty in Cart: 0Quantity:Price:$91.95Subtotal: -
ATHENA Complete Gasket Kit - Yamaha P400485900187
ATHENA
$207.95ATHENA 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...09343172- SKU:
- 09343172
- 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
$207.95Qty in Cart: 0Quantity:Price:$207.95Subtotal: -
ATHENA Complete Gasket Kit - Honda P400210850304
ATHENA
$87.95ATHENA 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...09344819- SKU:
- 09344819
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- PRODUCT NAME:
- GASKET KIT
- ENGINE TYPE:
- -
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- UNITS:
- KIT
$87.95 -
ATHENA Top End Gasket Kit - Honda P400210600195
ATHENA
$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...09344869- SKU:
- 09344869
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- ATV
- TYPE:
- TOP END
- UNITS:
- KIT
$100.95Qty in Cart: 0Quantity:Price:$100.95Subtotal: -
ATHENA Complete Gasket Kit - Polaris P400485850006
ATHENA
$15.95ATHENA 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...09344887- SKU:
- 09344887
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- TYPE:
- COMPLETE
- UNITS:
- KIT
- ENGINE TYPE:
- -
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- ATV
$15.95Qty in Cart: 0Quantity:Price:$15.95Subtotal: -
ATHENA Complete Gasket Kit - Polaris P400427870017
ATHENA
$162.95ATHENA 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...09344898- SKU:
- 09344898
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- ATV
- ENGINE TYPE:
- -
- TYPE:
- COMPLETE
- UNITS:
- KIT
$162.95 -
ATHENA Gasket Kit - TRX450R P400210160014
ATHENA
$149.95ATHENA 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...09344911- SKU:
- 09344911
- 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
$149.95 -
ATHENA Water Pump Gasket Kit - Yamaha P400485470001
ATHENA
$44.95ATHENA 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 bearings09345166- SKU:
- 09345166
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- WATER PUMP
- UNITS:
- KIT
$44.95 -
ATHENA Cylinder Kit - CRF150R - 69mm P400210100023
ATHENA
MSRP: $695.95$585.95ATHENA 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: $695.95$585.95 -
ATHENA Cylinder Kit - YZ250 - 72mm P400485100042
ATHENA
$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
$1,497.95 -
ATHENA Cylinder Kit - YZ85 - 105CC P400485100038
ATHENA
$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
$819.95 -
ATHENA Cylinder Gasket Kit - YZ125 P400485160003
ATHENA
$49.95Kits 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 bolt-on; no machining required400485160003- SKU:
- 400485160003
- Weight:
- 12.00 LBS
$49.95
