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!
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Dirt Bike Cams and Parts
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Dirt Bike Connecting Rods and Parts
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Dirt Bike Crankcases and Parts
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Dirt Bike Crankshafts and Parts
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Dirt Bike Cylinder Heads and Parts
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Dirt Bike Cylinders and Parts
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Dirt Bike Engine Bearings
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Dirt Bike Engine Covers
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Dirt Bike Engine Gaskets and Kits
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Dirt Bike Engine Rebuild Kits
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Dirt Bike Engine Seals - Orings and Kits
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Dirt Bike Engine Valves and Parts
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Dirt Bike Flywheel and Rod Assemblies
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Dirt Bike Fuel Filters
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Dirt Bike Miscellaneous Engine Parts
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Dirt Bike Oil Coolers
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Dirt Bike Oil Filters
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Dirt Bike Oil Lines
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Dirt Bike Oil Pumps
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Dirt Bike Piston and Ring Kits
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Dirt Bike Piston Rings Only
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Dirt Bike Wrist Pins and Circlips
- Product
- Qty in Cart
- Quantity
- Price
- Subtotal
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PROX Ring Set 02.1402
PROX
$63.01PROX Ring Set 02.1402Manufactured in Japan and designed as OEM replacements9120047- SKU:
- 9120047
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- UNITS:
- SET
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PRODUCT NAME:
- PISTON RING
- RIDING STYLE:
- OFF-ROAD
$63.01 -
On Sale
ATHENA Piston Ring Set - Standard S41316408
ATHENA
MSRP: $78.95Now: $71.06Was: $78.95ATHENA Piston Ring Set Standard S41316408Replacement rings for Athena Forged Pistons9120026- SKU:
- 9120026
- Availability:
- Ships Same Business Day
- Weight:
- 0.03 LBS
- BORE SIZE METRIC:
- 94.95 MM
- PRODUCT NAME:
- PISTON RING
- UNITS:
- SET
- RIDING STYLE:
- OFF-ROAD
- ENGINE TYPE:
- 4-STROKE
- PISTON MATERIAL:
- FORGED
- RIDING STYLE:
- ATV
MSRP: $78.95Now: $71.06Was: $78.95 -
On Sale
ATHENA Piston Ring Set - .50mm S41316017
ATHENA
MSRP: $33.95Now: $30.56Was: $33.95ATHENA Piston Ring Set .50mm S41316017Replacement rings for Athena Forged Pistons9120022- SKU:
- 9120022
- Availability:
- Ships Same Business Day
- Weight:
- 0.03 LBS
- UNITS:
- SET
- BORE SIZE METRIC:
- 72.44 MM
- PISTON MATERIAL:
- FORGED
- RIDING STYLE:
- ATV
- ENGINE TYPE:
- 2-STROKE
- PRODUCT NAME:
- PISTON RING
- RIDING STYLE:
- OFF-ROAD
MSRP: $33.95Now: $30.56Was: $33.95Qty in Cart: 0Quantity:Price:MSRP: $33.95Now: $30.56Was: $33.95Subtotal: -
On Sale
ATHENA Piston Ring Set - Standard S41316016
ATHENA
MSRP: $33.95Now: $30.56Was: $33.95ATHENA Piston Ring Set Standard S41316016Replacement rings for Athena Forged Pistons9120021- SKU:
- 9120021
- Availability:
- Ships Same Business Day
- Weight:
- 0.03 LBS
- BORE SIZE METRIC:
- 71.93 MM
- PISTON MATERIAL:
- FORGED
- ENGINE TYPE:
- 2-STROKE
- PRODUCT NAME:
- PISTON RING
- UNITS:
- SET
- RIDING STYLE:
- OFF-ROAD
MSRP: $33.95Now: $30.56Was: $33.95 -
JE PISTONS Piston Kit 379030
JE PISTONS
$314.99JE PISTONS Piston Kit 379030Machined from 2618-T6 high tensile forged aluminum, Dome/ dish features smooth flowing radii; require no deburring or preparation, JE designs are specifically engineered for extreme applications including professional...9106391- SKU:
- 9106391
- Availability:
- Ships Same Business Day
- Weight:
- 0.60 LBS
- BORE SIZE METRIC:
- 78.00 MM
- PRODUCT NAME:
- PISTON KIT
- BORE - OVERSIZE METRIC:
- STANDARD
- COMPRESSION RATIO IMPERIAL:
- 14.5:1
- BORE - OVERSIZE:
- STANDARD
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$314.99 -
JE PISTONS Piston Kit 379029
JE PISTONS
$314.99JE PISTONS Piston Kit 379029Machined from 2618-T6 high tensile forged aluminum, Dome/ dish features smooth flowing radii; require no deburring or preparation, JE designs are specifically engineered for extreme applications including professional...9106390- SKU:
- 9106390
- Availability:
- Ships Same Business Day
- Weight:
- 0.60 LBS
- BORE SIZE METRIC:
- 78.00 MM
- COMPRESSION RATIO IMPERIAL:
- 14.1:1
- BORE - OVERSIZE:
- STANDARD
- BORE - OVERSIZE METRIC:
- STANDARD
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$314.99 -
JE PISTONS Piston Kit 323898
JE PISTONS
$329.99JE PISTONS Piston Kit 323898Machined 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...9105934- SKU:
- 9105934
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
- BORE - OVERSIZE METRIC:
- STANDARD
- COMPRESSION RATIO IMPERIAL:
- 13.5:1
- PISTON MATERIAL:
- FORGED 2618 ALUMINUM
- BORE SIZE METRIC:
- 95.00 MM
- DISPLACEMENT:
- 450 CC
- RIDING STYLE:
- OFF-ROAD
- BORE - OVERSIZE:
- STANDARD
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- STREET
- PISTON HEAD SHAPE:
- DOMED
- STYLE:
- JE PISTON
- TYPE:
- FORGED SIDE RELIEF DESIGN
- UNITS:
- KIT
$329.99 -
JE PISTONS Piston Kit 284667
JE PISTONS
$329.99JE PISTONS Piston Kit 284667Machined 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...9105890- SKU:
- 9105890
- Availability:
- Ships Same Business Day
- Weight:
- 1.05 LBS
- PISTON HEAD SHAPE:
- DOMED
- TYPE:
- FORGED SIDE RELIEF DESIGN
- BORE - OVERSIZE:
- STANDARD
- BORE SIZE METRIC:
- 96.00 MM
- PISTON MATERIAL:
- FORGED 2618 ALUMINUM
- PRODUCT NAME:
- PISTON KIT
- STYLE:
- PRO SERIES
- BORE - OVERSIZE METRIC:
- STANDARD
- COMPRESSION RATIO IMPERIAL:
- 13.5:1
- DISPLACEMENT:
- 449 CC
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$329.99 -
JE PISTONS Piston Kit 274759
JE PISTONS
$309.99JE PISTONS Piston Kit 274759Machined 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...9105888- SKU:
- 9105888
- Availability:
- Ships Same Business Day
- Weight:
- 1.35 LBS
- BORE - OVERSIZE:
- +4,00 MM
- COMPRESSION RATIO IMPERIAL:
- 12.5:1
- PISTON HEAD SHAPE:
- FLAT TOP
- STYLE:
- JE PISTON
- TYPE:
- FORGED SIDE RELIEF DESIGN
- UNITS:
- KIT
- BORE SIZE METRIC:
- 100.00 MM
- RIDING STYLE:
- OFF-ROAD
- DISPLACEMENT:
- 488 CC
- PRODUCT NAME:
- PISTON KIT
- BORE - OVERSIZE METRIC:
- +4.00 MM
- PISTON MATERIAL:
- FORGED 2618 ALUMINUM
$309.99 -
JE PISTONS Piston Kit 274756
JE PISTONS
$309.99JE PISTONS Piston Kit 274756Machined 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...9105887- SKU:
- 9105887
- Availability:
- Ships Same Business Day
- Weight:
- 1.35 LBS
- PISTON HEAD SHAPE:
- DOMED
- STYLE:
- JE PISTON
- TYPE:
- FORGED SIDE RELIEF DESIGN
- BORE - OVERSIZE:
- STANDARD
- BORE SIZE METRIC:
- 96.00 MM
- PRODUCT NAME:
- PISTON KIT
- DISPLACEMENT:
- 449 CC
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- BORE - OVERSIZE METRIC:
- STANDARD
- COMPRESSION RATIO IMPERIAL:
- 13.5:1
- PISTON MATERIAL:
- FORGED 2618 ALUMINUM
$309.99 -
JE PISTONS Piston Kit 274755
JE PISTONS
$309.99JE PISTONS Piston Kit 274755Machined 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...9105886- SKU:
- 9105886
- Availability:
- Ships Same Business Day
- Weight:
- 1.35 LBS
- PISTON HEAD SHAPE:
- DOMED
- TYPE:
- FORGED SIDE RELIEF DESIGN
- DISPLACEMENT:
- 449 CC
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- BORE - OVERSIZE:
- STANDARD
- BORE SIZE METRIC:
- 96.00 MM
- COMPRESSION RATIO IMPERIAL:
- 12.5:1
- PISTON MATERIAL:
- FORGED 2618 ALUMINUM
- PRODUCT NAME:
- PISTON KIT
- STYLE:
- JE PISTON
- BORE - OVERSIZE METRIC:
- STANDARD
$309.99 -
JE PISTONS Piston Kit 247940
JE PISTONS
$299.99JE PISTONS Piston Kit 247940Machined 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...9105858- SKU:
- 9105858
- Availability:
- Ships Same Business Day
- Weight:
- 0.80 LBS
- BORE - OVERSIZE METRIC:
- +3.00 MM
- COMPRESSION RATIO IMPERIAL:
- 13.0:1
- DISPLACEMENT:
- 270 CC
- PISTON HEAD SHAPE:
- DISHED
- PRODUCT NAME:
- PISTON KIT
- UNITS:
- KIT
- BORE SIZE METRIC:
- 80.00 MM
- PISTON MATERIAL:
- FORGED 2618 ALUMINUM
- STYLE:
- JE PISTON
- TYPE:
- FORGED SIDE RELIEF DESIGN
- BORE - OVERSIZE:
- +3,00 MM
- RIDING STYLE:
- OFF-ROAD
$299.99 -
JE PISTONS Piston Kit 247937
JE PISTONS
$309.99JE PISTONS Piston Kit 247937Machined 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...9105857- SKU:
- 9105857
- Availability:
- Ships Same Business Day
- Weight:
- 0.65 LBS
- BORE - OVERSIZE:
- STANDARD
- BORE - OVERSIZE METRIC:
- STANDARD
- COMPRESSION RATIO IMPERIAL:
- 13.5:1
- PISTON HEAD SHAPE:
- DOMED
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- DISPLACEMENT:
- 249 CC
- PISTON MATERIAL:
- FORGED 2618 ALUMINUM
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- STREET
- STYLE:
- JE PISTON
- TYPE:
- FORGED SIDE RELIEF DESIGN
- BORE SIZE METRIC:
- 77.00 MM
$309.99 -
JE PISTONS Piston Kit 199656
JE PISTONS
$309.99JE PISTONS Piston Kit 199656Machined 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...9105829- SKU:
- 9105829
- Availability:
- Ships Same Business Day
- Weight:
- 1.35 LBS
- BORE - OVERSIZE:
- +2,00 MM
- COMPRESSION RATIO IMPERIAL:
- 12.0:1
- RIDING STYLE:
- ATV
- BORE - OVERSIZE METRIC:
- +2.00 MM
- DISPLACEMENT:
- 415 CC
- PISTON MATERIAL:
- FORGED 2618 ALUMINUM
- PRODUCT NAME:
- PISTON KIT
- STYLE:
- JE PISTON
- BORE SIZE METRIC:
- 87.00 MM
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PISTON HEAD SHAPE:
- DOMED
- TYPE:
- ROUND FORGED DESIGN
$309.99 -
On Sale
ATHENA Piston Kit - Big Bore - Kawasaki S5F08300008B
ATHENA
MSRP: $220.95Now: $198.86Was: $220.95Piston kits include piston, rings, wrist pin, and circlips9105607- SKU:
- 9105607
- Weight:
- 0.65 LBS
MSRP: $220.95Now: $198.86Was: $220.95Qty in Cart: 0Quantity:Price:MSRP: $220.95Now: $198.86Was: $220.95Subtotal: -
On Sale
ATHENA Piston Kit - Big Bore - Kawasaki S5F08300008A
ATHENA
MSRP: $220.95Now: $198.86Was: $220.95Piston kits include piston, rings, wrist pin, and circlips9105606- SKU:
- 9105606
- Weight:
- 10.00 LBS
MSRP: $220.95Now: $198.86Was: $220.95Qty in Cart: 0Quantity:Price:MSRP: $220.95Now: $198.86Was: $220.95Subtotal: -
On Sale
ATHENA Piston Kit - Big Bore - Honda S4F09800011B
ATHENA
MSRP: $264.95Now: $238.46Was: $264.95Piston kits include piston, rings, wrist pin, and circlips9105605- SKU:
- 9105605
- Weight:
- 16.00 LBS
MSRP: $264.95Now: $238.46Was: $264.95Qty in Cart: 0Quantity:Price:MSRP: $264.95Now: $238.46Was: $264.95Subtotal: -
On Sale
ATHENA Piston Kit - Big Bore - Honda S4F09800011A
ATHENA
MSRP: $264.95Now: $238.46Was: $264.95Piston kits include piston, rings, wrist pin, and circlips9105604- SKU:
- 9105604
- Weight:
- 16.00 LBS
MSRP: $264.95Now: $238.46Was: $264.95Qty in Cart: 0Quantity:Price:MSRP: $264.95Now: $238.46Was: $264.95Subtotal: -
WOSSNER Piston Kit 8237DA
WOSSNER
$91.95WOSSNER Piston Kit 8237DA2-stoke pistons include piston, rings, pin and clips, Piston made with high quality, permanent skirt coating to reduce friction and piston rock for quiet and improved performance, 4032 T6 Forged Aluminum Alloy, German Engineered...9105581- SKU:
- 9105581
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- ENGINE TYPE:
- 2-STROKE
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- SINGLE RING
- UNITS:
- KIT
- BORE - OVERSIZE:
- STANDARD
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PISTON MATERIAL:
- FORGED
- DISPLACEMENT:
- 80 CC
- PISTON SIZE METRIC:
- 46.95 MM
- BORE - OVERSIZE METRIC:
- STANDARD
- BORE SIZE METRIC:
- 47.00 MM
- MODEL:
- STANDARD SERIES
- PRODUCT NAME:
- PISTON KIT
$91.95 -
WOSSNER Piston Kit 8233D050
WOSSNER
$91.95WOSSNER Piston Kit 8233D0502-stoke pistons include piston, rings, pin and clips, Piston made with high quality, permanent skirt coating to reduce friction and piston rock for quiet and improved performance, 4032 T6 Forged Aluminum Alloy, German...9105579- SKU:
- 9105579
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- BORE - OVERSIZE:
- +0,50 MM
- BORE SIZE METRIC:
- 47.50 MM
- DISPLACEMENT:
- 79 CC
- ENGINE TYPE:
- 2-STROKE
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- SINGLE RING
- UNITS:
- KIT
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PISTON MATERIAL:
- FORGED
- BORE - OVERSIZE METRIC:
- +0.50 MM
- PISTON SIZE METRIC:
- 47.45 MM
- MODEL:
- STANDARD SERIES
- PRODUCT NAME:
- PISTON KIT
$91.95
