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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On Sale
DRAG SPECIALTIES Pistons - M8 21900049-020
DRAG SPECIALTIES
MSRP: $136.95Now: $88.00Was: $136.95DRAG SPECIALTIES Pistons M8 21900049-020Piston for M8 models09110052- SKU:
- 09110052
- Availability:
- Ships Same Business Day
- Weight:
- 2.40 LBS
- BORE OVERSIZE - IMPERIAL:
- +0.020'
- BORE SIZE IMPERIAL:
- 3.937'
- COMPRESSION RATIO IMPERIAL:
- 10.0:1
- DISPLACEMENT:
- 107'
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PISTON MATERIAL:
- CAST
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- STREET
- BORE - OVERSIZE:
- +0,020'
- UNITS:
- KIT
MSRP: $136.95Now: $88.00Was: $136.95Qty in Cart: 0Quantity:Price:MSRP: $136.95Now: $88.00Was: $136.95Subtotal: -
Cylinder Works Big Bore Gasket Kit Honda CRF250R 2004-2009 11001-G01
CYLINDER WORKS
$64.95CYLINDER WORKS Big Bore Gasket Kit 11001-G01 Enhance your engine's performance with the CYLINDER WORKS Big Bore Gasket Kit 11001-G01. Designed for easy installation, this kit features high-quality components that replicate OEM specifications while...09341521- SKU:
- 09341521
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- PRODUCT NAME:
- GASKET KIT
- TYPE:
- TOP END
- BORE SIZE METRIC:
- OVERSIZED (+3.00 MM)
- MATERIAL:
- NICKEL SILICON CARBIDE
- UNITS:
- KIT
- RIDING STYLE:
- OFF-ROAD
- STYLE:
- BIG BORE
$64.95Qty in Cart: 0Quantity:Price:$64.95Subtotal: -
Cylinder Works Big Bore Gasket Kit Honda CRF450R 2002-2008 11002-G01
CYLINDER WORKS
$77.95CYLINDER WORKS Big Bore Gasket Kit 11002-G01 Elevate your engine's performance with the CYLINDER WORKS Big Bore Gasket Kit 11002-G01. This ready-to-install kit offers a seamless fit and enhances power without the need for re-plating. Designed for...09341522- SKU:
- 09341522
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- MATERIAL:
- NICKEL SILICON CARBIDE
- UNITS:
- KIT
- TYPE:
- TOP END
- BORE SIZE METRIC:
- OVERSIZE (+4.00 MM)
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- OFF-ROAD
- STYLE:
- BIG BORE
$77.95 -
Cylinder Works Big Bore Gasket Kit YFZ 450 R 2009-2024 21002-G01
CYLINDER WORKS
$86.95CYLINDER WORKS Big Bore Gasket Kit 21002-G01 Elevate your engine's performance with the CYLINDER WORKS Big Bore Gasket Kit 21002-G01. Designed for easy installation, this kit features high-quality components that enhance durability and efficiency,...09341523- SKU:
- 09341523
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- MATERIAL:
- NICKEL SILICON CARBIDE
- UNITS:
- KIT
- ENGINE TYPE:
- 4-STROKE
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- GASKET KIT
- STYLE:
- BIG BORE
- BORE SIZE METRIC:
- OVERSIZED (+3.00 MM)
- TYPE:
- TOP END
$86.95 -
Cylinder Works Big Bore Gasket Kit Kawasaki KX250F 2004-2008 31001-G01
CYLINDER WORKS
$94.95CYLINDER WORKS Big Bore Gasket Kit 31001-G01 Enhance your engine's performance with the CYLINDER WORKS Big Bore Gasket Kit 31001-G01. Designed for easy installation, this kit provides a direct bolt-on solution that mirrors the OEM design while boosting...09341525- SKU:
- 09341525
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- MATERIAL:
- NICKEL SILICON CARBIDE
- STYLE:
- BIG BORE
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- GASKET KIT
- UNITS:
- KIT
- BORE SIZE METRIC:
- OVERSIZED (+3.00 MM)
- TYPE:
- TOP END
$94.95 -
ATHENA Water Pump Gasket Kit - Suzuki P400510475004
ATHENA
$39.95ATHENA Water Pump Gasket Kit Suzuki P400510475004Include 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 bearings09346083- SKU:
- 09346083
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- GASKET KIT
- TYPE:
- WATER PUMP
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$39.95 -
ATHENA Water Pump Gasket Kit - Yamaha P400485475002
ATHENA
$37.95ATHENA Water Pump Gasket Kit Yamaha P400485475002Include 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 bearings09346084- SKU:
- 09346084
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- TYPE:
- WATER PUMP
$37.95Qty in Cart: 0Quantity:Price:$37.95Subtotal: -
ATHENA Water Pump Gasket Kit - Yamaha P400485475003
ATHENA
$38.95ATHENA Water Pump Gasket Kit Yamaha P400485475003Include 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 bearings09346085- SKU:
- 09346085
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- PRODUCT NAME:
- GASKET KIT
- TYPE:
- WATER PUMP
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$38.95Qty in Cart: 0Quantity:Price:$38.95Subtotal: -
ATHENA Water Pump Gasket Kit - Yamaha P400485475004
ATHENA
$34.95ATHENA Water Pump Gasket Kit Yamaha P400485475004Include 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 bearings09346086- SKU:
- 09346086
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- TYPE:
- WATER PUMP
$34.95Qty in Cart: 0Quantity:Price:$34.95Subtotal: -
ATHENA Water Pump Gasket Kit - Yamaha P400485475005
ATHENA
$34.95ATHENA Water Pump Gasket Kit Yamaha P400485475005Include 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 bearings09346087- SKU:
- 09346087
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- TYPE:
- WATER PUMP
- UNITS:
- KIT
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- GASKET KIT
$34.95 -
ATHENA Water Pump Gasket Kit - Yamaha P400485475006
ATHENA
$37.95ATHENA Water Pump Gasket Kit Yamaha P400485475006Include 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 bearings09346088- SKU:
- 09346088
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- PRODUCT NAME:
- GASKET KIT
- TYPE:
- WATER PUMP
- UNITS:
- KIT
- ENGINE TYPE:
- 4-STROKE
- RIDING STYLE:
- OFF-ROAD
$37.95 -
ATHENA Gasket Kit - CRF230F P400210160316
ATHENA
$37.95ATHENA Gasket Kit CRF230F P400210160316Kits 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...09344814- SKU:
- 09344814
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- BORE SIZE METRIC:
- 67.00 MM
- DISPLACEMENT:
- 233 CC
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TOP END
- UNITS:
- KIT
- BORE SIZE:
- 67,00 MM
- PRODUCT NAME:
- GASKET KIT
$37.95Qty in Cart: 0Quantity:Price:$37.95Subtotal: -
ATHENA Top End Gasket Kit - Honda P400210600304
ATHENA
$38.95ATHENA Top End Gasket Kit Honda P400210600304Specifically 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...09344815- SKU:
- 09344815
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TOP END
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET KIT
$38.95 -
ATHENA Top End Gasket Kit - Yamaha P400485600004
ATHENA
$12.95ATHENA Top End Gasket Kit Yamaha P400485600004Specifically 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...09344818- SKU:
- 09344818
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TOP END
- UNITS:
- KIT
$12.95 -
ATHENA Top End Gasket Kit P400210600065
ATHENA
$42.95ATHENA Top End Gasket Kit P400210600065Specifically 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...09340200- SKU:
- 09340200
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- PRODUCT NAME:
- GASKET KIT
- MATERIAL:
- RUBBER
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- TYPE:
- TOP END
$42.95 -
ATHENA Complete Gasket Kit - Kawasaki P400250850015
ATHENA
$102.95ATHENA Complete Gasket Kit Kawasaki P400250850015Superior-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...09340203- SKU:
- 09340203
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- ENGINE TYPE:
- 2-STROKE
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET KIT
$102.95 -
ATHENA Top End Gasket Kit - KTM/Husqvarna P400270600090
ATHENA
$72.95ATHENA Top End Gasket Kit KTM/Husqvarna P400270600090Specifically 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...09346351- SKU:
- 09346351
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET KIT
- TYPE:
- TOP END
- RIDING STYLE:
- STREET
$72.95 -
ATHENA Top End Gasket Kit - Kawasaki P400250600068
ATHENA
$82.95ATHENA Top End Gasket Kit Kawasaki P400250600068Specifically 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...09346354- SKU:
- 09346354
- Availability:
- Ships Same Business Day
- Weight:
- 0.35 LBS
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- TYPE:
- TOP END
$82.95 -
ATHENA Complete Gasket Kit - Kawasaki P400250900068
ATHENA
$224.95ATHENA Complete Gasket Kit Kawasaki P400250900068Head 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...09346355- SKU:
- 09346355
- Availability:
- Ships Same Business Day
- Weight:
- 0.45 LBS
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
- UNITS:
- KIT
$224.95 -
ATHENA Complete Gasket Kit - KTM P400270900088
ATHENA
$205.95ATHENA Complete Gasket Kit KTM P400270900088Head 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...09346356- SKU:
- 09346356
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- COMPLETE
$205.95
