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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PROX Piston Rings 02.4336
PROX
$49.95PROX Piston Rings 02.4336High quality rings which allow for optimum heat transfer and sealing09120655- SKU:
- 09120655
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- PISTON MATERIAL:
- ALUMINUM ALLOY
- BORE SIZE METRIC:
- 76.96 MM - 76.98 MM
- PRODUCT NAME:
- PISTON RING
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- PAIR
$49.95 -
PROX Piston Rings 02.6012
PROX
$24.95PROX Piston Rings 02.6012High quality rings which allow for optimum heat transfer and sealing09120656- SKU:
- 09120656
- Availability:
- Ships Same Business Day
- Weight:
- 0.01 LBS
- PISTON MATERIAL:
- ALUMINUM ALLOY
- BORE SIZE METRIC:
- 39.46 MM - 39.48 MM
- PRODUCT NAME:
- PISTON RING
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- PAIR
$24.95 -
PROX Piston Rings 02.6225
PROX
$49.95PROX Piston Rings 02.6225High quality rings which allow for optimum heat transfer and sealing09120657- SKU:
- 09120657
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- RIDING STYLE:
- OFF-ROAD
- BORE SIZE METRIC:
- 53.94 MM - 53.97 MM
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PRODUCT NAME:
- PISTON RING
- UNITS:
- PAIR
$49.95 -
On Sale
PROX Piston Rings 02.6228
PROX
MSRP: $36.35Now: $22.00Was: $36.35PROX Piston Rings 02.6228High quality rings which allow for optimum heat transfer and sealing09120658- SKU:
- 09120658
- Availability:
- Ships Same Business Day
- Weight:
- 0.01 LBS
- UNITS:
- PAIR
- PRODUCT NAME:
- PISTON RING
- BORE SIZE METRIC:
- 55.94 MM - 55.96 MM
- PISTON MATERIAL:
- ALUMINUM ALLOY
- RIDING STYLE:
- OFF-ROAD
MSRP: $36.35Now: $22.00Was: $36.35 -
PROX Piston Rings 02.6351
PROX
$49.95PROX Piston Rings 02.6351High quality rings which allow for optimum heat transfer and sealing09120661- SKU:
- 09120661
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- UNITS:
- PAIR
- BORE SIZE METRIC:
- 87.96 MM - 87.98 MM
- RIDING STYLE:
- OFF-ROAD
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PRODUCT NAME:
- PISTON RING
$49.95 -
PROX Piston Rings 02.6394
PROX
$49.95PROX Piston Rings 02.6394High quality rings which allow for optimum heat transfer and sealing09120662- SKU:
- 09120662
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- PRODUCT NAME:
- PISTON RING
- RIDING STYLE:
- OFF-ROAD
- BORE SIZE METRIC:
- 71.94 MM - 71.96 MM
- PISTON MATERIAL:
- ALUMINUM ALLOY
- UNITS:
- PAIR
$49.95 -
PROX Piston Rings 02.6429
PROX
$49.95PROX Piston Rings 02.6429High quality rings which allow for optimum heat transfer and sealing09120663- SKU:
- 09120663
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- PRODUCT NAME:
- PISTON RING
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- PAIR
- BORE SIZE METRIC:
- 94.95 MM - 94.97 MM
- ENGINE TYPE:
- 4-STROKE
- PISTON MATERIAL:
- ALUMINUM ALLOY
- RIDING STYLE:
- STREET
$49.95 -
PROX Crankshaft 10.6228
PROX
$369.22PROX Crankshaft 10.6228High-quality forged connecting rod kit, Meet or exceed OEM crankshafts in performance and durability09210791- SKU:
- 09210791
- Availability:
- Ships Same Business Day
- Weight:
- 7.40 LBS
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- CRANKSHAFT
- UNITS:
- EACH
$369.22 -
PROX Crankshaft 10.3340
PROX
$465.98PROX Crankshaft 10.3340High-quality forged connecting rod kit, Meet or exceed OEM crankshafts in performance and durability09210799- SKU:
- 09210799
- Availability:
- Ships Same Business Day
- Weight:
- 7.80 LBS
- UNITS:
- EACH
- PRODUCT NAME:
- CRANKSHAFT
- RIDING STYLE:
- OFF-ROAD
$465.98 -
PROX Crankshaft 10.6335
PROX
$486.39PROX Crankshaft 10.6335High-quality forged connecting rod kit, Meet or exceed OEM crankshafts in performance and durability09210801- SKU:
- 09210801
- Availability:
- Ships Same Business Day
- Weight:
- 7.85 LBS
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- CRANKSHAFT
- UNITS:
- EACH
$486.39 -
PROX Crank Bearing and Seal Kit 23.CBS11085
PROX
$55.95PROX Crank Bearing and Seal Kit 23.CBS11085Made to exact OEM specifications for maximum performance and durability, Includes all necessary bearings/seals for a component's replacement, For use with OEM or Pro X crankshafts09240294- SKU:
- 09240294
- Availability:
- Ships Same Business Day
- Weight:
- 0.92 LBS
- PRODUCT NAME:
- BEARING AND SEAL KIT
- STYLE:
- 2-STROKE
- TYPE:
- BALL
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- APPLICATION:
- CRANKSHAFT
$55.95 -
PROX Crank Bearing and Seal Kit 23.CBS12007
PROX
$106.87PROX Crank Bearing and Seal Kit 23.CBS12007Made to exact OEM specifications for maximum performance and durability, Includes all necessary bearings/seals for a component's replacement, For use with OEM or Pro X crankshafts09240295- SKU:
- 09240295
- Availability:
- Ships Same Business Day
- Weight:
- 0.90 LBS
- RIDING STYLE:
- OFF-ROAD
- STYLE:
- 4-STROKE
- PRODUCT NAME:
- BEARING AND SEAL KIT
- UNITS:
- KIT
- TYPE:
- BALL
- APPLICATION:
- CRANKSHAFT
$106.87 -
PROX Crank Bearing and Seal Kit 23.CBS12080
PROX
$56.97PROX Crank Bearing and Seal Kit 23.CBS12080Made to exact OEM specifications for maximum performance and durability, Includes all necessary bearings/seals for a component's replacement, For use with OEM or Pro X crankshafts09240296- SKU:
- 09240296
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
- APPLICATION:
- CRANKSHAFT
- PRODUCT NAME:
- BEARING AND SEAL KIT
- UNITS:
- KIT
- TYPE:
- BALL
- RIDING STYLE:
- OFF-ROAD
- STYLE:
- 2-STROKE
$56.97 -
PROX Crank Bearing and Seal Kit 23.CBS12086
PROX
$53.95PROX Crank Bearing and Seal Kit 23.CBS12086Made to exact OEM specifications for maximum performance and durability, Includes all necessary bearings/seals for a component's replacement, For use with OEM or Pro X crankshafts09240297- SKU:
- 09240297
- Availability:
- Ships Same Business Day
- Weight:
- 0.95 LBS
- APPLICATION:
- CRANKSHAFT
- TYPE:
- BALL
- PRODUCT NAME:
- BEARING AND SEAL KIT
- RIDING STYLE:
- OFF-ROAD
- STYLE:
- 2-STROKE
- UNITS:
- KIT
$53.95 -
PROX Crank Bearing and Seal Kit 23.CBS13004
PROX
$111.16PROX Crank Bearing and Seal Kit 23.CBS13004Made to exact OEM specifications for maximum performance and durability, Includes all necessary bearings/seals for a component's replacement, For use with OEM or Pro X crankshafts09240298- SKU:
- 09240298
- Availability:
- Ships Same Business Day
- Weight:
- 1.10 LBS
- PRODUCT NAME:
- BEARING AND SEAL KIT
- STYLE:
- 4-STROKE
- APPLICATION:
- CRANKSHAFT
- TYPE:
- BALL
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$111.16 -
PROX Crank Bearing and Seal Kit 23.CBS13006
PROX
$112.87PROX Crank Bearing and Seal Kit 23.CBS13006Made to exact OEM specifications for maximum performance and durability, Includes all necessary bearings/seals for a component's replacement, For use with OEM or Pro X crankshafts09240299- SKU:
- 09240299
- Availability:
- Ships Same Business Day
- Weight:
- 1.05 LBS
- PRODUCT NAME:
- BEARING AND SEAL KIT
- APPLICATION:
- CRANKSHAFT
- TYPE:
- BALL
- STYLE:
- 4-STROKE
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$112.87 -
PROX Crank Bearing and Seal Kit 23.CBS13084
PROX
$65.95PROX Crank Bearing and Seal Kit 23.CBS13084Made to exact OEM specifications for maximum performance and durability, Includes all necessary bearings/seals for a component's replacement, For use with OEM or Pro X crankshafts09240300- SKU:
- 09240300
- Availability:
- Ships Same Business Day
- Weight:
- 1.50 LBS
- APPLICATION:
- CRANKSHAFT
- PRODUCT NAME:
- BEARING AND SEAL KIT
- TYPE:
- BALL
- RIDING STYLE:
- OFF-ROAD
- STYLE:
- 2-STROKE
- UNITS:
- KIT
$65.95 -
PROX Crank Bearing and Seal Kit 23.CBS13087
PROX
$65.95PROX Crank Bearing and Seal Kit 23.CBS13087Made to exact OEM specifications for maximum performance and durability, Includes all necessary bearings/seals for a component's replacement, For use with OEM or Pro X crankshafts09240301- SKU:
- 09240301
- Availability:
- Ships Same Business Day
- Weight:
- 1.65 LBS
- APPLICATION:
- CRANKSHAFT
- TYPE:
- BALL
- PRODUCT NAME:
- BEARING AND SEAL KIT
- RIDING STYLE:
- ATV
- STYLE:
- 2-STROKE
- UNITS:
- KIT
$65.95 -
PROX Crank Bearing and Seal Kit 23.CBS14002
PROX
$108.08PROX Crank Bearing and Seal Kit 23.CBS14002Made to exact OEM specifications for maximum performance and durability, Includes all necessary bearings/seals for a component's replacement, For use with OEM or Pro X crankshafts09240304- SKU:
- 09240304
- Availability:
- Ships Same Business Day
- Weight:
- 1.40 LBS
- APPLICATION:
- CRANKSHAFT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- BEARING AND SEAL KIT
- STYLE:
- 4-STROKE
- TYPE:
- BALL
$108.08 -
PROX Crank Bearing and Seal Kit 23.CBS14096
PROX
$81.13PROX Crank Bearing and Seal Kit 23.CBS14096Made to exact OEM specifications for maximum performance and durability, Includes all necessary bearings/seals for a component's replacement, For use with OEM or Pro X crankshafts09240306- SKU:
- 09240306
- Availability:
- Ships Same Business Day
- Weight:
- 1.75 LBS
- APPLICATION:
- CRANKSHAFT
- PRODUCT NAME:
- BEARING SET
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- STYLE:
- 4-STROKE
- TYPE:
- BALL
$81.13
