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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JE PISTONS Piston Kit 291516
JE PISTONS
$309.99JE PISTONS Piston Kit 291516Machined 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...09105904- SKU:
- 09105904
- Availability:
- Ships Same Business Day
- Weight:
- 0.60 LBS
- BORE - OVERSIZE METRIC:
- STANDARD
- DISPLACEMENT:
- 249 CC
- PISTON MATERIAL:
- FORGED 2618 ALUMINUM
- PRODUCT NAME:
- PISTON KIT
- TYPE:
- FORGED SIDE RELIEF DESIGN
- BORE SIZE METRIC:
- 76.80 MM
- COMPRESSION RATIO IMPERIAL:
- 13.8:1
- PISTON HEAD SHAPE:
- DOMED
- BORE - OVERSIZE:
- STANDARD
- RIDING STYLE:
- OFF-ROAD
- STYLE:
- PRO SERIES
- UNITS:
- KIT
$309.99 -
JE PISTONS Piston Kit 300277
JE PISTONS
$269.99JE PISTONS Piston Kit 300277Machined 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...09105914- SKU:
- 09105914
- Availability:
- Ships Same Business Day
- Weight:
- 1.50 LBS
- BORE - OVERSIZE:
- +2,00 MM
- BORE - OVERSIZE METRIC:
- +2.00 MM
- BORE SIZE METRIC:
- 102.00 MM
- COMPRESSION RATIO IMPERIAL:
- 10.5:1
- PISTON MATERIAL:
- FORGED 2618 ALUMINUM
- PRODUCT NAME:
- PISTON KIT
- STYLE:
- JE PISTON
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- ROUND FORGED DESIGN
- UNITS:
- KIT
- DISPLACEMENT:
- 657 CC
- PISTON HEAD SHAPE:
- FLAT TOP
$269.99 -
On Sale
JE PISTONS Piston Kit 306372
JE PISTONS
MSRP: $584.57Now: $393.00Was: $584.57JE PISTONS Piston Kit 306372Machined 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...09105915- SKU:
- 09105915
- Availability:
- Ships Same Business Day
- Weight:
- 2.50 LBS
- COMPRESSION RATIO IMPERIAL:
- 11.0:1
- UNITS:
- KIT
- PISTON HEAD SHAPE:
- DOMED
- DISPLACEMENT:
- 932 CC
- RIDING STYLE:
- UTV
- WALL THICKNESS IMPERIAL:
- 0.160'
- BORE SIZE METRIC:
- 96.00 MM
- PRODUCT NAME:
- PISTON KIT
- WALL THICKNESS:
- 0,160'
MSRP: $584.57Now: $393.00Was: $584.57 -
On Sale
JE PISTONS Piston Kit 306373
JE PISTONS
MSRP: $584.57Now: $393.00Was: $584.57JE PISTONS Piston Kit 306373Machined 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...09105916- SKU:
- 09105916
- Availability:
- Ships Same Business Day
- Weight:
- 3.90 LBS
- DISPLACEMENT:
- 932 CC
- WALL THICKNESS IMPERIAL:
- 0.160'
- PISTON HEAD SHAPE:
- DOMED
- UNITS:
- KIT
- BORE SIZE METRIC:
- 96.00 MM
- COMPRESSION RATIO IMPERIAL:
- 11.5:1
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- UTV
- WALL THICKNESS:
- 0,160'
MSRP: $584.57Now: $393.00Was: $584.57 -
JE PISTONS Piston Kit 315160
JE PISTONS
$329.99JE PISTONS Piston Kit 315160Machined 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...09105923- SKU:
- 09105923
- Availability:
- Ships Same Business Day
- Weight:
- 1.10 LBS
- RIDING STYLE:
- OFF-ROAD
- WALL THICKNESS IMPERIAL:
- 0.160'
- COMPRESSION RATIO IMPERIAL:
- 13.5:1
- PISTON HEAD SHAPE:
- DOMED
- UNITS:
- KIT
- BORE SIZE METRIC:
- 96.00 MM
- DISPLACEMENT:
- 449 CC
- PRODUCT NAME:
- PISTON KIT
$329.99 -
On Sale
JE PISTONS Piston Kit 317182
JE PISTONS
MSRP: $484.97Now: $326.00Was: $509.22JE PISTONS Piston Kit 317182Machined 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...09105924- SKU:
- 09105924
- Availability:
- Ships Same Business Day
- Weight:
- 2.40 LBS
- RIDING STYLE:
- ATV
- UNITS:
- KIT
- WALL THICKNESS IMPERIAL:
- 0.140'
- DISPLACEMENT:
- 749 CC
- PISTON HEAD SHAPE:
- FLAT TOP
- BORE SIZE METRIC:
- 85.00 MM
- COMPRESSION RATIO IMPERIAL:
- 11.5:1
- PRODUCT NAME:
- PISTON KIT
MSRP: $484.97Now: $326.00Was: $509.22Qty in Cart: 0Quantity:Price:MSRP: $484.97Now: $326.00Was: $509.22Subtotal: -
On Sale
JE PISTONS Piston Kit 317183
JE PISTONS
MSRP: $484.97Now: $326.00Was: $484.97JE PISTONS Piston Kit 317183Machined 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...09105925- SKU:
- 09105925
- Availability:
- Ships Same Business Day
- Weight:
- 3.90 LBS
- UNITS:
- KIT
- WALL THICKNESS IMPERIAL:
- 0.140'
- COMPRESSION RATIO IMPERIAL:
- 12.0:1
- DISPLACEMENT:
- 749 CC
- PISTON HEAD SHAPE:
- DOMED
- RIDING STYLE:
- ATV
- BORE SIZE METRIC:
- 85.00 MM
- PRODUCT NAME:
- PISTON KIT
MSRP: $484.97Now: $326.00Was: $484.97 -
JE PISTONS Piston Kit 317198
JE PISTONS
$524.99JE PISTONS Piston Kit 317198Machined 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...09105926- SKU:
- 09105926
- Availability:
- Ships Same Business Day
- Weight:
- 2.60 LBS
- UNITS:
- KIT
- WALL THICKNESS IMPERIAL:
- 0.160'
- PISTON HEAD SHAPE:
- DISHED
- PRODUCT NAME:
- PISTON KIT
- BORE SIZE METRIC:
- 94.00 MM
- DISPLACEMENT:
- 994 CC
- RIDING STYLE:
- UTV
- COMPRESSION RATIO IMPERIAL:
- 11.5:1
$524.99 -
JE PISTONS Piston Kit 317239
JE PISTONS
$329.99JE PISTONS Piston Kit 317239Machined 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...09105929- SKU:
- 09105929
- Availability:
- Ships Same Business Day
- Weight:
- 1.35 LBS
- PISTON HEAD SHAPE:
- DOMED
- COMPRESSION RATIO IMPERIAL:
- 13.5:1
- DISPLACEMENT:
- 449 CC
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- BORE SIZE METRIC:
- 96.00 MM
- PRODUCT NAME:
- PISTON KIT
- WALL THICKNESS IMPERIAL:
- 0.160'
$329.99 -
JE PISTONS Piston Kit 317240
JE PISTONS
$329.99JE PISTONS Piston Kit 317240Machined 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...09105930- SKU:
- 09105930
- Availability:
- Ships Same Business Day
- Weight:
- 1.10 LBS
- BORE - OVERSIZE:
- STANDARD
- RIDING STYLE:
- OFF-ROAD
- STYLE:
- PRO SERIES
- BORE - OVERSIZE METRIC:
- STANDARD
- DISPLACEMENT:
- 449 CC
- PISTON HEAD SHAPE:
- DOMED
- UNITS:
- KIT
- PISTON MATERIAL:
- FORGED 2618 ALUMINUM
- TYPE:
- FORGED SIDE RELIEF DESIGN
- BORE SIZE METRIC:
- 96.00 MM
- COMPRESSION RATIO IMPERIAL:
- 14.5:1
- PRODUCT NAME:
- PISTON KIT
$329.99 -
JE PISTONS Piston Kit 323556
JE PISTONS
$309.99JE PISTONS Piston Kit 323556Machined 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...09105931- SKU:
- 09105931
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- BORE - OVERSIZE:
- STANDARD
- STYLE:
- PRO SERIES
- PISTON MATERIAL:
- FORGED 2618 ALUMINUM
- PRODUCT NAME:
- PISTON KIT
- TYPE:
- FORGED SIDE RELIEF DESIGN
- BORE - OVERSIZE METRIC:
- STANDARD
- COMPRESSION RATIO IMPERIAL:
- 13.5:1
- PISTON HEAD SHAPE:
- DOMED
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- BORE SIZE METRIC:
- 77.00 MM
- DISPLACEMENT:
- 250 CC
$309.99 -
JE PISTONS Piston Kit 323557
JE PISTONS
$309.99JE PISTONS Piston Kit 323557Machined 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...09105932- SKU:
- 09105932
- Availability:
- Ships Same Business Day
- Weight:
- 1.35 LBS
- BORE - OVERSIZE METRIC:
- STANDARD
- COMPRESSION RATIO IMPERIAL:
- 14.0:1
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- BORE - OVERSIZE:
- STANDARD
- PISTON MATERIAL:
- FORGED 2618 ALUMINUM
- PRODUCT NAME:
- PISTON KIT
- STYLE:
- PRO SERIES
- BORE SIZE METRIC:
- 77.00 MM
- DISPLACEMENT:
- 250 CC
- PISTON HEAD SHAPE:
- DOMED
- TYPE:
- FORGED SIDE RELIEF DESIGN
$309.99 -
JE PISTONS Piston Kit 323558
JE PISTONS
$309.99JE PISTONS Piston Kit 323558Machined 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...09105933- SKU:
- 09105933
- Availability:
- Ships Same Business Day
- Weight:
- 1.35 LBS
- BORE - OVERSIZE METRIC:
- STANDARD
- BORE - OVERSIZE:
- STANDARD
- BORE SIZE METRIC:
- 77.00 MM
- PISTON MATERIAL:
- FORGED 2618 ALUMINUM
- PRODUCT NAME:
- PISTON KIT
- STYLE:
- PRO SERIES
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- COMPRESSION RATIO IMPERIAL:
- 14.5:1
- DISPLACEMENT:
- 250 CC
- PISTON HEAD SHAPE:
- DOMED
- TYPE:
- FORGED SIDE RELIEF DESIGN
$309.99 -
JE PISTONS Piston Kit 324915
JE PISTONS
$329.99JE PISTONS Piston Kit 324915Machined 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...09105939- SKU:
- 09105939
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
- DISPLACEMENT:
- 450 CC
- PRODUCT NAME:
- PISTON KIT
- BORE - OVERSIZE METRIC:
- STANDARD
- BORE SIZE METRIC:
- 97.00 MM
- COMPRESSION RATIO IMPERIAL:
- 14.0:1
- PISTON HEAD SHAPE:
- DOMED
- UNITS:
- KIT
- PISTON MATERIAL:
- FORGED 2618 ALUMINUM
- TYPE:
- FORGED SIDE RELIEF DESIGN
- BORE - OVERSIZE:
- STANDARD
- RIDING STYLE:
- OFF-ROAD
- STYLE:
- PRO SERIES
$329.99 -
JE PISTONS Piston Kit 325025
JE PISTONS
$329.99JE PISTONS Piston Kit 325025Machined 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...09105940- SKU:
- 09105940
- Availability:
- Ships Same Business Day
- Weight:
- 1.15 LBS
- UNITS:
- KIT
- WALL THICKNESS IMPERIAL:
- 0.160'
- DISPLACEMENT:
- 478 CC
- PISTON HEAD SHAPE:
- DISHED
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- ATV
- BORE SIZE METRIC:
- 98.00 MM
- COMPRESSION RATIO IMPERIAL:
- 13.5:1
- WALL THICKNESS:
- 0,160'
$329.99 -
JE PISTONS Piston Kit 325027
JE PISTONS
$329.99JE PISTONS Piston Kit 325027Machined 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...09105941- SKU:
- 09105941
- Availability:
- Ships Same Business Day
- Weight:
- 1.35 LBS
- PISTON HEAD SHAPE:
- DOMED
- UNITS:
- KIT
- WALL THICKNESS IMPERIAL:
- 0.160'
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- ATV
- WALL THICKNESS:
- 0,160'
- BORE SIZE METRIC:
- 99.00 MM
- DISPLACEMENT:
- 477 CC
- COMPRESSION RATIO IMPERIAL:
- 13.5:1
$329.99Qty in Cart: 0Quantity:Price:$329.99Subtotal: -
JE PISTONS Piston Kit 344514
JE PISTONS
$368.94JE PISTONS Piston Kit 344514Machined 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...09105942- SKU:
- 09105942
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- BORE - OVERSIZE:
- STANDARD
- RIDING STYLE:
- OFF-ROAD
- STYLE:
- PRO SERIES
- UNITS:
- KIT
- TYPE:
- FORGED SIDE RELIEF DESIGN
- BORE - OVERSIZE METRIC:
- STANDARD
- BORE SIZE METRIC:
- 76.80 MM
- COMPRESSION RATIO IMPERIAL:
- 14.5:1
- PISTON HEAD SHAPE:
- DOMED
- DISPLACEMENT:
- 249 CC
- PISTON MATERIAL:
- FORGED 2618 ALUMINUM
- PRODUCT NAME:
- PISTON KIT
$368.94Qty in Cart: 0Quantity:Price:$368.94Subtotal: -
JE PISTONS Piston Kit 345054
JE PISTONS
$424.99JE PISTONS Piston Kit 345054Machined 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...09105943- SKU:
- 09105943
- Availability:
- Ships Same Business Day
- Weight:
- 1.35 LBS
- BORE - OVERSIZE:
- STANDARD
- RIDING STYLE:
- OFF-ROAD
- STYLE:
- PRO SERIES
- UNITS:
- KIT
- PISTON HEAD SHAPE:
- DOMED
- TYPE:
- FORGED SIDE RELIEF DESIGN
- BORE - OVERSIZE METRIC:
- STANDARD
- BORE SIZE METRIC:
- 96.00 MM
- COMPRESSION RATIO IMPERIAL:
- 13.5:1
- DISPLACEMENT:
- 449 CC
- PISTON MATERIAL:
- FORGED 2618 ALUMINUM
- PRODUCT NAME:
- PISTON KIT
$424.99 -
JE PISTONS Piston Kit 345056
JE PISTONS
$424.99JE PISTONS Piston Kit 345056Machined 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...09105945- SKU:
- 09105945
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
- BORE - OVERSIZE:
- STANDARD
- RIDING STYLE:
- OFF-ROAD
- STYLE:
- PRO SERIES
- UNITS:
- KIT
- BORE - OVERSIZE METRIC:
- STANDARD
- COMPRESSION RATIO IMPERIAL:
- 14.5:1
- PISTON HEAD SHAPE:
- DOMED
- PISTON MATERIAL:
- FORGED 2618 ALUMINUM
- TYPE:
- FORGED SIDE RELIEF DESIGN
- BORE SIZE METRIC:
- 96.00 MM
- DISPLACEMENT:
- 449 CC
- PRODUCT NAME:
- PISTON KIT
$424.99 -
JE PISTONS Piston Kit 345193
JE PISTONS
$839.99JE PISTONS Piston Kit 345193Machined 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...09105947- SKU:
- 09105947
- Availability:
- Ships Same Business Day
- Weight:
- 2.65 LBS
- DISPLACEMENT:
- 998 CC
- UNITS:
- KIT
- BORE SIZE METRIC:
- 80.00 MM
- COMPRESSION RATIO IMPERIAL:
- 11.5:1
- PRODUCT NAME:
- PISTON KIT
- WALL THICKNESS:
- 0,160'
- WALL THICKNESS IMPERIAL:
- 0.160'
- PISTON HEAD SHAPE:
- DOMED
- RIDING STYLE:
- UTV
$839.99
