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!
- Product
- Qty in Cart
- Quantity
- Price
- Subtotal
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HOT CAMS Valve Shim - 10.0 x 2.60 - 5 pack 5PK1000260
HOT CAMS
$9.95HOT CAMS Valve Shim 10.0 x 2.60 5 pack 5PK1000260Replacement packs of shims to refill Valve Shim Kits09261289- SKU:
- 09261289
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- OUTSIDE DIAMETER METRIC:
- 10.00 MM
- TYPE:
- VALVE
- MATERIAL:
- STEEL
- PRODUCT NAME:
- SHIM
- UNITS:
- 5 PACK
- VALVE SHIM THICKNESS METRIC:
- 2.60 MM
- RIDING STYLE:
- OFF-ROAD
$9.95 -
HOT CAMS Valve Shim - 10.0 x 2.65 - 5 pack 5PK1000265
HOT CAMS
$9.95HOT CAMS Valve Shim 10.0 x 2.65 5 pack 5PK1000265Replacement packs of shims to refill Valve Shim Kits09261290- SKU:
- 09261290
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- OUTSIDE DIAMETER METRIC:
- 10.00 MM
- TYPE:
- VALVE
- PRODUCT NAME:
- SHIM
- UNITS:
- 5 PACK
- VALVE SHIM THICKNESS METRIC:
- 2.65 MM
$9.95 -
HOT CAMS Valve Shim - 10.0 x 2.70 - 5 pack 5PK1000270
HOT CAMS
$9.95HOT CAMS Valve Shim 10.0 x 2.70 5 pack 5PK1000270Replacement packs of shims to refill Valve Shim Kits09261291- SKU:
- 09261291
- Availability:
- Ships Same Business Day
- Weight:
- 0.01 LBS
- MATERIAL:
- STEEL
- OUTSIDE DIAMETER METRIC:
- 10.00 MM
- TYPE:
- VALVE
- RIDING STYLE:
- OFF-ROAD
- VALVE SHIM THICKNESS METRIC:
- 2.70 MM
- PRODUCT NAME:
- SHIM
- UNITS:
- 5 PACK
$9.95 -
HOT CAMS Valve Shim - 10.0 x 2.75 - 5 pack 5PK1000275
HOT CAMS
$9.95HOT CAMS Valve Shim 10.0 x 2.75 5 pack 5PK1000275Replacement packs of shims to refill Valve Shim Kits09261292- SKU:
- 09261292
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- VALVE SHIM THICKNESS METRIC:
- 2.75 MM
- PRODUCT NAME:
- SHIM
- TYPE:
- VALVE
- OUTSIDE DIAMETER METRIC:
- 10.00 MM
- UNITS:
- 5 PACK
$9.95 -
HOT CAMS Valve Shim - 10.0 x 2.85 - 5 pack 5PK1000285
HOT CAMS
$9.95HOT CAMS Valve Shim 10.0 x 2.85 5 pack 5PK1000285Replacement packs of shims to refill Valve Shim Kits09261294- SKU:
- 09261294
- Availability:
- Ships Same Business Day
- Weight:
- 0.01 LBS
- OUTSIDE DIAMETER METRIC:
- 10.00 MM
- TYPE:
- VALVE
- PRODUCT NAME:
- SHIM
- UNITS:
- 5 PACK
- VALVE SHIM THICKNESS METRIC:
- 2.85 MM
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
$9.95 -
HOT CAMS Valve Shim - 10.0 x 2.90 - 5 pack 5PK1000290
HOT CAMS
$9.95HOT CAMS Valve Shim 10.0 x 2.90 5 pack 5PK1000290Replacement packs of shims to refill Valve Shim Kits09261295- SKU:
- 09261295
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- OUTSIDE DIAMETER METRIC:
- 10.00 MM
- TYPE:
- VALVE
- MATERIAL:
- STEEL
- PRODUCT NAME:
- SHIM
- UNITS:
- 5 PACK
- VALVE SHIM THICKNESS METRIC:
- 2.90 MM
- RIDING STYLE:
- OFF-ROAD
$9.95 -
HOT CAMS Valve Shim - 10.0 x 3.05 - 5 pack 5PK1000305
HOT CAMS
$9.95HOT CAMS Valve Shim 10.0 x 3.05 5 pack 5PK1000305Replacement packs of shims to refill Valve Shim Kits09261298- SKU:
- 09261298
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- OUTSIDE DIAMETER METRIC:
- 10.00 MM
- PRODUCT NAME:
- SHIM
- UNITS:
- 5 PACK
- TYPE:
- VALVE
- RIDING STYLE:
- OFF-ROAD
- VALVE SHIM THICKNESS METRIC:
- 3.05 MM
- MATERIAL:
- STEEL
$9.95 -
HINSON RACING Oil Filler Cap - KTM OC477
HINSON RACING
$19.99HINSON RACING Oil Filler Cap KTM OC477Machined from T-6 aluminum, Replace the stock plastic plug, Give your ATV that "factory" look, Used by race teams worldwide, Made in the U.S.A.09500619- SKU:
- 09500619
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- PRODUCT NAME:
- CAP
- TYPE:
- OIL FILLER
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- COLOR/FINISH:
- POLISHED
$19.99 -
On Sale
VERTEX Piston Ring 53010005800
VERTEX
MSRP: $24.95Now: $22.46Was: $24.95VERTEX Piston Ring 53010005800Replacement piston rings, Nitride coated or chrome plated, increasing wear resistance and extending durability, The latest generation for both two-stroke and four-stroke engines; four-stroke piston rings are sold in sets and...09120173- SKU:
- 09120173
- Availability:
- Ships Same Business Day
- Weight:
- 0.01 LBS
- PRODUCT NAME:
- PISTON RING
- PISTON DIAMETER METRIC:
- 57.95 MM
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
MSRP: $24.95Now: $22.46Was: $24.95 -
On Sale
VERTEX Piston Kit 23641A
VERTEX
MSRP: $247.95Now: $227.66Was: $254.95VERTEX Piston Kit 23641AAll pistons are heat treated with a T-5 hardening and tempering cycle, All piston skirts are coated with a high-tech Molybdenum Disulphite coating for faster break-in time and increased piston life, Cast piston kits are gravity...09102073- SKU:
- 09102073
- Availability:
- Ships Same Business Day
- Weight:
- 0.69 LBS
- DISPLACEMENT:
- 350 CC
- ENGINE TYPE:
- 4-STROKE
- PISTON MATERIAL:
- FORGED 2618 ALUMINUM
- RIDING STYLE:
- OFF-ROAD
- SKIRT COATING:
- MOLYBDENUM DISULPHITE
- COMPRESSION RATIO IMPERIAL:
- 12.8:1
- CYLINDER DIAMETER METRIC:
- 88.00 MM
- PISTON DIAMETER METRIC:
- 87.96 MM
- PRODUCT NAME:
- PISTON KIT
- RIDING STYLE:
- STREET
- STYLE:
- FORGED HIGH COMPRESSION
- UNITS:
- KIT
MSRP: $247.95Now: $227.66Was: $254.95 -
WISECO Piston Kit with Gaskets PK1278
WISECO
$179.95WISECO Piston Kit with Gaskets PK1278Most Wiseco 2-cycle pistons are forged from high-silicone bar stock, Greater strength and lower expansion at high temperatures, Complete piston kits include High-Performance forged pistons, rings, wrist pins, circlips...09030230- SKU:
- 09030230
- Availability:
- Ships Same Business Day
- Weight:
- 0.65 LBS
- BORE - OVERSIZE:
- +1,00 MM
- BORE - OVERSIZE METRIC:
- +1.00 MM
- PISTON DIAMETER METRIC:
- 48.47 MM
- SKIRT COATING:
- NON-COATED
- UNITS:
- KIT
- DISPLACEMENT:
- 79.7 CC
- MODEL:
- FORGED SERIES
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- TOP END
- BORE SIZE METRIC:
- 48.50 MM
- COMPRESSION RATIO IMPERIAL:
- 9.7:1
- RIDING STYLE:
- OFF-ROAD
- ENGINE TYPE:
- 4-STROKE
- PISTON MATERIAL:
- 4032 ALUMINUM ALLOY
- STROKE LENGTH METRIC:
- 45.00 MM
$179.95 -
WISECO Piston Kit with Gaskets PK1116
WISECO
$204.95WISECO Piston Kit with Gaskets PK1116Most Wiseco 2-cycle pistons are forged from high-silicone bar stock, Greater strength and lower expansion at high temperatures, Complete piston kits include High-Performance forged pistons, rings, wrist pins, circlips...09030231- SKU:
- 09030231
- Availability:
- Ships Same Business Day
- Weight:
- 0.90 LBS
- BORE SIZE METRIC:
- 65.50 MM
- RIDING STYLE:
- OFF-ROAD
- SKIRT COATING:
- NON-COATED
- UNITS:
- KIT
- COMPRESSION RATIO IMPERIAL:
- 10.0:1
- DISPLACEMENT:
- 192 CC
- PISTON DIAMETER METRIC:
- 65.45 MM
- MODEL:
- FORGED SERIES
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- TOP END
- BORE - OVERSIZE:
- STANDARD
- BORE - OVERSIZE METRIC:
- STANDARD
- ENGINE TYPE:
- 4-STROKE
- PISTON MATERIAL:
- 2618 ALUMINUM ALLOY
- STROKE LENGTH METRIC:
- 57.80 MM
$204.95 -
WISECO Engine Kit - RM250 - 2003-2004 PWR165A-100
WISECO
$664.95WISECO Engine Kit RM250 2003-2004 PWR165A-100Includes all top and bottom-end components for a complete engine rebuild, Crankshaft and rod assembly designed and inspected to assure durability, Kit includes main bearings, seals, gaskets, an hour meter and...09031544- SKU:
- 09031544
- Availability:
- Ships Same Business Day
- Weight:
- 13.65 LBS
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- ENGINE
- DISPLACEMENT:
- 250 CC
- ENGINE TYPE:
- 2-STROKE
- BORE SIZE METRIC:
- 66.40 MM
- OVERBORE METRIC:
- STANDARD
- UNITS:
- KIT
- FEATURES:
- PROLITE® PISTON
- MODEL:
- GARAGE BUDDY
- RIDING STYLE:
- OFF-ROAD
$664.95Qty in Cart: 0Quantity:Price:$664.95Subtotal: -
WISECO Engine Kit - RM250 - 2005-2010 PWR165B-100
WISECO
$664.95WISECO Engine Kit RM250 2005-2010 PWR165B-100Includes all top and bottom-end components for a complete engine rebuild, Crankshaft and rod assembly designed and inspected to assure durability, Kit includes main bearings, seals, gaskets, an hour meter and...09031545- SKU:
- 09031545
- Availability:
- Ships Same Business Day
- Weight:
- 13.95 LBS
- ENGINE TYPE:
- 2-STROKE
- MODEL:
- GARAGE BUDDY
- RIDING STYLE:
- OFF-ROAD
- BORE SIZE METRIC:
- 66.40 MM
- UNITS:
- KIT
- DISPLACEMENT:
- 250 CC
- FEATURES:
- PROLITE® PISTON
- OVERBORE METRIC:
- STANDARD
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- ENGINE
$664.95 -
WISECO Piston 4753M09600
WISECO
$229.95WISECO Piston 4753M09600Forged from high-silicon alloy for maximum strength and dependability, Wiseco offers a complete range of popular piston models and years for both trail and racing applications, All Wiseco pistons are priced with rings and circlips4753M09600- SKU:
- 4753M09600
- Availability:
- Ships Same Business Day
- Weight:
- 0.42 LBS
- PISTON MATERIAL:
- FORGED 2618 ALUMINUM
- RIDING STYLE:
- OFF-ROAD
- STROKE LENGTH METRIC:
- 62.10 MM
- COMPRESSION RATIO IMPERIAL:
- 11.5:1
- DISPLACEMENT:
- 449 CC
- PISTON DIAMETER METRIC:
- 95.94 MM
- SKIRT COATING:
- ARMORGLIDE®
- BORE - OVERSIZE:
- STANDARD
- BORE - OVERSIZE METRIC:
- STANDARD
- BORE SIZE METRIC:
- 96.00 MM
- ENGINE TYPE:
- 4-STROKE
- MODEL:
- FORGED SERIES
- PRODUCT NAME:
- PISTON KIT
- UNITS:
- KIT
$229.95 -
WOSSNER Piston Kit 8608DA
WOSSNER
$207.95WOSSNER Piston Kit 8608DA2 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...09104944- SKU:
- 09104944
- Availability:
- Ships Same Business Day
- Weight:
- 0.90 LBS
- BORE - OVERSIZE METRIC:
- STANDARD
- BORE SIZE METRIC:
- 96.00 MM
- PRODUCT NAME:
- PISTON KIT
- BORE - OVERSIZE:
- STANDARD
- COMPRESSION RATIO IMPERIAL:
- 12.0:1
- ENGINE TYPE:
- 4-STROKE
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PISTON MATERIAL:
- FORGED
- PISTON SIZE METRIC:
- 95.96 MM
- MODEL:
- PREMIUM SERIES
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$207.95 -
BOYESEN Impeller Pump YZ250F WPI-37
BOYESEN
$79.95Designed to increase water flow and reduce hydraulic friction for a cooler, more constant temperature, Less horsepower loss during the late stages of a race, Extend engine life, Impellers are designed to minimize cavitationWPI37- SKU:
- WPI37
- Weight:
- 0.14 LBS
- MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- IMPELLER
- UNITS:
- EACH
- TYPE:
- WATER PUMP
- MODEL:
- SUPERCOOLER
- RIDING STYLE:
- OFF-ROAD
$79.95 -
BOYESEN Impeller Pump YZ/WR WPI-32A
BOYESEN
$79.95Designed to increase water flow and reduce hydraulic friction for a cooler, more constant temperature, Less horsepower loss during the late stages of a race, Extend engine life, Impellers are designed to minimize cavitationWPI32A- SKU:
- WPI32A
- Weight:
- 0.35 LBS
- PRODUCT NAME:
- IMPELLER
- RIDING STYLE:
- OFF-ROAD
- MATERIAL:
- ALUMINUM
- MODEL:
- SUPERCOOLER
- TYPE:
- WATER PUMP
- UNITS:
- EACH
$79.95 -
BOYESEN Impeller Pump YZ125 WPI-31
BOYESEN
$79.95Designed to increase water flow and reduce hydraulic friction for a cooler, more constant temperature, Less horsepower loss during the late stages of a race, Extend engine life, Impellers are designed to minimize cavitationWPI31- SKU:
- WPI31
- Weight:
- 0.40 LBS
- MODEL:
- SUPERCOOLER
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- WATER PUMP
- PRODUCT NAME:
- IMPELLER
- MATERIAL:
- ALUMINUM
- UNITS:
- EACH
$79.95 -
BOYESEN Clutch Cover - Gold CC-17AM
BOYESEN
$95.95BOYESEN Clutch Cover Gold CC-17AMSet your ride apart from the rest with the ultimate look in race performance, Lightweight factory clutch covers provide years of outstanding protection, Individually surfaced for a perfect, leak-free fit, Super-tough,...09401117- SKU:
- 09401117
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- UNITS:
- EACH
- COLOR/FINISH:
- MAGNESIUM
- COLOR/FINISH:
- POWDER-COATED
- MODEL:
- FACTORY RACING
- TYPE:
- CLUTCH
- PRODUCT NAME:
- COVER
- RIDING STYLE:
- OFF-ROAD
$95.95
