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.
- Product
- Qty in Cart
- Quantity
- Price
- Subtotal
-
JE PISTONS Piston Kit 291517
JE PISTONS
$277.63JE PISTONS Piston Kit 291517Machined from 2618-T6 high-tensile forged aluminum, Dome/dish features smooth flowing radii; requires no deburring or preparation, Specifically engineered for extreme applications including professional competition, Pro Series...09105905- SKU:
- 09105905
- Availability:
- Ships Same Business Day
- Weight:
- 0.65 LBS
- BORE SIZE METRIC:
- 76.80 MM
- COMPRESSION RATIO IMPERIAL:
- 14.2:1
- BORE - OVERSIZE METRIC:
- STANDARD
- PISTON HEAD SHAPE:
- DOMED
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- DISPLACEMENT:
- 249 CC
- PISTON MATERIAL:
- FORGED 2618 ALUMINUM
- PRODUCT NAME:
- PISTON KIT
- TYPE:
- FORGED SIDE RELIEF DESIGN
- BORE - OVERSIZE:
- STANDARD
- STYLE:
- PRO SERIES
$277.63 -
JE PISTONS Piston Kit 292330
JE PISTONS
$242.50JE PISTONS Piston Kit 292330Machined from 2618-T6 high-tensile forged aluminum, Dome/dish features smooth flowing radii; requires no deburring or preparation, Specifically engineered for extreme applications including professional competition, Pro Series...09105906- SKU:
- 09105906
- Availability:
- Ships Same Business Day
- Weight:
- 1.50 LBS
- BORE - OVERSIZE:
- +1,00 MM
- PRODUCT NAME:
- PISTON KIT
- COMPRESSION RATIO IMPERIAL:
- 9.0:1
- PISTON HEAD SHAPE:
- FLAT TOP
- PISTON MATERIAL:
- FORGED 2618 ALUMINUM
- STYLE:
- JE PISTON
- BORE - OVERSIZE METRIC:
- +1.00 MM
- TYPE:
- ROUND FORGED DESIGN
- UNITS:
- KIT
- BORE SIZE METRIC:
- 101.00 MM
- DISPLACEMENT:
- 650 CC
- RIDING STYLE:
- OFF-ROAD
$242.50 -
JE PISTONS Piston Kit 299245
JE PISTONS
$277.63JE PISTONS Piston Kit 299245Machined from 2618-T6 high-tensile forged aluminum, Dome/dish features smooth flowing radii; requires no deburring or preparation, Specifically engineered for extreme applications including professional competition, Pro Series...09105908- SKU:
- 09105908
- Availability:
- Ships Same Business Day
- Weight:
- 1.35 LBS
- BORE - OVERSIZE METRIC:
- STANDARD
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- BORE - OVERSIZE:
- STANDARD
- DISPLACEMENT:
- 249 CC
- PISTON MATERIAL:
- FORGED 2618 ALUMINUM
- PRODUCT NAME:
- PISTON KIT
- STYLE:
- PRO SERIES
- BORE SIZE METRIC:
- 77.00 MM
- COMPRESSION RATIO IMPERIAL:
- 14.2:1
- PISTON HEAD SHAPE:
- DOMED
- TYPE:
- FORGED SIDE RELIEF DESIGN
$277.63 -
JE PISTONS Piston Kit 300275
JE PISTONS
$242.50JE PISTONS Piston Kit 300275Machined from 2618-T6 high-tensile forged aluminum, Dome/dish features smooth flowing radii; requires no deburring or preparation, Specifically engineered for extreme applications including professional competition, Pro Series...09105912- SKU:
- 09105912
- Availability:
- Ships Same Business Day
- Weight:
- 1.50 LBS
- BORE - OVERSIZE METRIC:
- STANDARD
- DISPLACEMENT:
- 644 CC
- PISTON MATERIAL:
- FORGED 2618 ALUMINUM
- BORE - OVERSIZE:
- STANDARD
- PRODUCT NAME:
- PISTON KIT
- BORE SIZE METRIC:
- 100.00 MM
- RIDING STYLE:
- OFF-ROAD
- COMPRESSION RATIO IMPERIAL:
- 10.5:1
- PISTON HEAD SHAPE:
- FLAT TOP
- STYLE:
- JE PISTON
- TYPE:
- ROUND FORGED DESIGN
- UNITS:
- KIT
$242.50 -
JE PISTONS Piston Kit 300276
JE PISTONS
$242.50JE PISTONS Piston Kit 300276Machined from 2618-T6 high-tensile forged aluminum, Dome/dish features smooth flowing radii; requires no deburring or preparation, Specifically engineered for extreme applications including professional competition, Pro Series...09105913- SKU:
- 09105913
- Availability:
- Ships Same Business Day
- Weight:
- 1.35 LBS
- DISPLACEMENT:
- 650 CC
- RIDING STYLE:
- OFF-ROAD
- BORE - OVERSIZE METRIC:
- +1.00 MM
- BORE SIZE METRIC:
- 101.00 MM
- TYPE:
- ROUND FORGED DESIGN
- UNITS:
- KIT
- COMPRESSION RATIO IMPERIAL:
- 10.5:1
- PISTON HEAD SHAPE:
- FLAT TOP
- PISTON MATERIAL:
- FORGED 2618 ALUMINUM
- STYLE:
- JE PISTON
- BORE - OVERSIZE:
- +1,00 MM
- PRODUCT NAME:
- PISTON KIT
$242.50 -
CYLINDER WORKS Gasket Kit - Standard Bore 810989
CYLINDER WORKS
$63.63CYLINDER WORKS Gasket Kit Standard Bore 810989Made in the U.S.A.09346003- SKU:
- 09346003
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- TYPE:
- CYLINDER
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- BORE SIZE IMPERIAL:
- STANDARD
- PRODUCT NAME:
- GASKET KIT
$63.63 -
CYLINDER WORKS Gasket Kit - Big Bore - Honda CW11011G01
CYLINDER WORKS
$61.95CYLINDER WORKS Gasket Kit Big Bore Honda CW11011G01Made in the U.S.A.09346344- SKU:
- 09346344
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CYLINDER BASE
- UNITS:
- KIT
- BORE SIZE IMPERIAL:
- OVERSIZE (+3.00 MM)
- TYPE:
- CYLINDER HEAD
$61.95 -
On Sale
CYLINDER WORKS Gasket Kit - Big Bore CW21012G01
CYLINDER WORKS
MSRP: $96.95Now: $63.00Was: $96.95CYLINDER WORKS Gasket Kit Big Bore CW21012G01Made in the U.S.A.09346345- SKU:
- 09346345
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- BORE SIZE IMPERIAL:
- OVERSIZE (+2.00 MM)
- PRODUCT NAME:
- GASKET
- TYPE:
- CYLINDER BASE
- TYPE:
- CYLINDER HEAD
- UNITS:
- KIT
- RIDING STYLE:
- OFF-ROAD
- ENGINE TYPE:
- 4-STROKE
MSRP: $96.95Now: $63.00Was: $96.95 -
CYLINDER WORKS Gasket Kit - Big Bore 11010-G01
CYLINDER WORKS
$70.95CYLINDER WORKS Gasket Kit Big Bore 11010-G01Made in the U.S.A.09346004- SKU:
- 09346004
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- TYPE:
- CYLINDER
- BORE SIZE IMPERIAL:
- OVERSIZE (+3.00 MM)
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- DIAMETER METRIC:
- 99.00 MM
- PRODUCT NAME:
- GASKET KIT
$70.95Qty in Cart: 0Quantity:Price:$70.95Subtotal: -
CYLINDER WORKS Cylinder - Standard 20010
CYLINDER WORKS
$355.95CYLINDER WORKS Cylinder Standard 20010Ready-to-install, direct bolt-on cylinder requires no re-plating and looks virtually identical to the OEM cylinders, Nickel silicon carbide-plated for long life, Made in the U.S.A.09310579- SKU:
- 09310579
- Availability:
- Ships Same Business Day
- Weight:
- 2.60 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- COMPRESSION RATIO IMPERIAL:
- 13.5:1
- CYLINDER BORE COATING:
- NICKEL-SILICON CARBIDE
- CYLINDER DIAMETER:
- 77,00 MM
- DISPLACEMENT:
- 249 CC
- ENGINE TYPE:
- 4-CYCLE
- PRODUCT NAME:
- CYLINDER
- CYLINDER DIAMETER METRIC:
- 77.00 MM
- OVERBORE METRIC:
- STANDARD
- STYLE:
- STANDARD
$355.95 -
CYLINDER WORKS Cylinder Kit - Big Bore 10007-K02
CYLINDER WORKS
$559.95CYLINDER WORKS Cylinder Kit Big Bore 10007-K02Ready-to-install, direct bolt-on cylinders require no re-plating and look virtually identical to the OEM cylinders, Cylinder kits include matched Vertex pistons to ensure longevity, performance and reduced...09310583- SKU:
- 09310583
- Availability:
- Ships Same Business Day
- Weight:
- 3.55 LBS
- DISPLACEMENT:
- 249 CC
- ENGINE TYPE:
- 4-CYCLE
- CYLINDER DIAMETER:
- 76,80 MM
- STYLE:
- STANDARD
- CYLINDER DIAMETER METRIC:
- 76.80 MM
- RIDING STYLE:
- OFF-ROAD
- COMPRESSION RATIO IMPERIAL:
- 13.5:1
- CYLINDER BORE COATING:
- NICKEL-SILICON CARBIDE
- PRODUCT NAME:
- CYLINDER KIT
- UNITS:
- KIT
$559.95 -
CYLINDER WORKS Cylinder Kit - Standard Bore 20005-K02
CYLINDER WORKS
$646.95CYLINDER WORKS Cylinder Kit Standard Bore 20005-K02Ready-to-install, direct bolt-on cylinders require no re-plating and look virtually identical to the OEM cylinders, Cylinder kits include matched Vertex pistons to ensure longevity, performance and...09310585- SKU:
- 09310585
- Availability:
- Ships Same Business Day
- Weight:
- 4.55 LBS
- CYLINDER DIAMETER:
- 97,00 MM
- DISPLACEMENT:
- 449 CC
- ENGINE TYPE:
- 4-CYCLE
- PRODUCT NAME:
- CYLINDER KIT
- STYLE:
- STANDARD
- COMPRESSION RATIO IMPERIAL:
- 12.5:1
- CYLINDER BORE COATING:
- NICKEL-SILICON CARBIDE
- CYLINDER DIAMETER METRIC:
- 97.00 MM
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$646.95 -
CYLINDER WORKS Cylinder Kit - Standard Bore 20009-K01
CYLINDER WORKS
$690.95CYLINDER WORKS Cylinder Kit Standard Bore 20009-K01Ready-to-install, direct bolt-on cylinders require no re-plating and look virtually identical to the OEM cylinders, Cylinder kits include matched Vertex pistons to ensure longevity, performance and...09310587- SKU:
- 09310587
- Availability:
- Ships Same Business Day
- Weight:
- 7.35 LBS
- PRODUCT NAME:
- CYLINDER KIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
$690.95 -
CYLINDER WORKS Cylinder Head CH2005-K01
CYLINDER WORKS
$118.95CYLINDER WORKS Cylinder Head CH2005-K01New replacement cylinder head, Includes cam caps and cam cap bolts, Includes C630 (nickel/aluminum/bronze) valve seats and guides, Competition valve job, Shortened valve guides to accept higher lift cams, Unshrouded...09300205- SKU:
- 09300205
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- PRODUCT NAME:
- CYLINDER HEAD
- UNITS:
- EACH
- RIDING STYLE:
- OFF-ROAD
$118.95 -
CYLINDER WORKS Cylinder - Standard 30009
CYLINDER WORKS
$455.95CYLINDER WORKS Cylinder Standard 30009Ready-to-install, direct bolt-on cylinder requires no re-plating and looks virtually identical to the OEM cylinders, Nickel silicon carbide-plated for long life, Made in the U.S.A.09310580- SKU:
- 09310580
- Availability:
- Ships Same Business Day
- Weight:
- 3.50 LBS
- OVERBORE METRIC:
- STANDARD
- STYLE:
- STANDARD
- COMPRESSION RATIO IMPERIAL:
- 10.0:1
- CYLINDER BORE COATING:
- NICKEL-SILICON CARBIDE
- DISPLACEMENT:
- 85 CC
- ENGINE TYPE:
- 2-CYCLE
- PRODUCT NAME:
- CYLINDER
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
$455.95Qty in Cart: 0Quantity:Price:$455.95Subtotal: -
CYLINDER WORKS Cylinder Kit - High Compression 10001-K02HC
CYLINDER WORKS
$599.95CYLINDER WORKS Cylinder Kit High Compression 10001-K02HCReady-to-install, direct bolt-on cylinders require no re-plating and look virtually identical to the OEM cylinders, Cylinder kits include matched Vertex pistons to ensure longevity, performance and...09310290- SKU:
- 09310290
- Availability:
- Ships Same Business Day
- Weight:
- 3.40 LBS
- CYLINDER BORE COATING:
- NICKEL-SILICON CARBIDE
- COMPRESSION RATIO IMPERIAL:
- 13.5:1
- PRODUCT NAME:
- CYLINDER KIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- CYLINDER DIAMETER METRIC:
- 78.00 MM
- CYLINDER DIAMETER:
- 78,00 MM
- DISPLACEMENT:
- 249 CC
- ENGINE TYPE:
- 4-CYCLE
- STYLE:
- HIGH COMPRESSION
$599.95 -
DEL WEST Exhaust Valve DW-RMZ450-EV08
DEL WEST
$172.95DEL WEST Exhaust Valve DW-RMZ450-EV08Meets the demands of off-road, all valves are backed by an established record of performance and reliability in competition that is unapproachable09261063- SKU:
- 09261063
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MATERIAL:
- TITANIUM
- PRODUCT NAME:
- VALVE
- RIDING STYLE:
- OFF-ROAD
- APPLICATION:
- EXHAUST
- UNITS:
- EACH
$172.95 -
DEL WEST Intake Valve DW-RMZ450-IV05
DEL WEST
$172.95DEL WEST Intake Valve DW-RMZ450-IV05Meets the demands of off-road, all valves are backed by an established record of performance and reliability in competition that is unapproachable09261064- SKU:
- 09261064
- Availability:
- Ships Same Business Day
- Weight:
- 0.07 LBS
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- VALVE
- APPLICATION:
- INTAKE
- MATERIAL:
- TITANIUM
- UNITS:
- EACH
$172.95 -
DEL WEST Intake Valve DW-CRF150RIV07
DEL WEST
$172.95DEL WEST Intake Valve DW-CRF150RIV07Meets the demands of off-road, all valves are backed by an established record of performance and reliability in competition that is unapproachable09262217- SKU:
- 09262217
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- APPLICATION:
- INTAKE
- PRODUCT NAME:
- VALVE
- RIDING STYLE:
- OFF-ROAD
- MATERIAL:
- TITANIUM
- UNITS:
- EACH
$172.95 -
MOOSE RACING Oil Pump Cover - KTM/Husky T04-5101B
MOOSE RACING
$32.95MOOSE RACING Oil Pump Cover KTM/Husky T04-5101BCNC Machined covers made from 6061 T6 Aluminum, Black anodized finish for added looks and appeal, Aluminum cover helps dissipate added heat from engine oil, Light weight and durable design09401936- SKU:
- 09401936
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- BASE FINISH:
- ANODIZED
- COLOR/FINISH:
- BLACK
- MATERIAL:
- 6061 T-6 ALUMINUM
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- COVER
- COLOR/FINISH:
- ANODIZED
- BASE COLOR:
- BLACK
- COLOR/FINISH:
- MACHINED
- TYPE:
- OIL PUMP
- UNITS:
- EACH
$32.95
