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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WISECO Piston Kit - XR/TRX400 4606M08700
WISECO
$219.95WISECO Piston Kit XR/TRX400 4606M08700Pistons come without gasket kit9102910- SKU:
- 9102910
- Availability:
- Ships Same Business Day
- Weight:
- 1.15 LBS
- BORE - OVERSIZE METRIC:
- +2.00 MM
- STROKE LENGTH METRIC:
- 70.00 MM
- BORE SIZE METRIC:
- 87.00 MM
- COMPRESSION RATIO IMPERIAL:
- 10.0:1
- DISPLACEMENT:
- 397 CC
- RIDING STYLE:
- OFF-ROAD
- BORE - OVERSIZE:
- +2,00 MM
- ENGINE TYPE:
- 4-STROKE
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PISTON MATERIAL:
- FORGED
- PRODUCT NAME:
- PISTON
- UNITS:
- EACH
$219.95 -
WISECO Piston Kit - XR400R 4606M08800
WISECO
$220.70WISECO Piston Kit XR400R 4606M08800Pistons come without gasket kit9102911- SKU:
- 9102911
- Availability:
- Ships Same Business Day
- Weight:
- 1.10 LBS
$220.70Qty in Cart: 0Quantity:Price:$220.70Subtotal: -
WISECO Piston Kit - XR/TRX400 4628M08600
WISECO
$220.70WISECO Piston Kit XR/TRX400 4628M08600Pistons come without gasket kit9102913- SKU:
- 9102913
- Availability:
- Ships Same Business Day
- Weight:
- 1.10 LBS
$220.70Qty in Cart: 0Quantity:Price:$220.70Subtotal: -
WISECO Piston Kit - XR/TRX400 4628M08700
WISECO
$244.68WISECO Piston Kit XR/TRX400 4628M08700Pistons come without gasket kit9102914- SKU:
- 9102914
- Availability:
- Ships Same Business Day
- Weight:
- 1.15 LBS
$244.68Qty in Cart: 0Quantity:Price:$244.68Subtotal: -
WISECO Piston Kit - XR/TRX400 4628M08800
WISECO
$244.95WISECO Piston Kit XR/TRX400 4628M08800Pistons come without gasket kit9102915- SKU:
- 9102915
- Availability:
- Ships Same Business Day
- Weight:
- 1.10 LBS
- BORE - OVERSIZE:
- +3,00 MM
- COMPRESSION RATIO IMPERIAL:
- 11.0:1
- ENGINE TYPE:
- 4-STROKE
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PRODUCT NAME:
- PISTON
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- STROKE LENGTH METRIC:
- 70.00 MM
- BORE SIZE METRIC:
- 88.00 MM
- DISPLACEMENT:
- 397 CC
- PISTON MATERIAL:
- FORGED
- BORE - OVERSIZE METRIC:
- +3.00 MM
$244.95Qty in Cart: 0Quantity:Price:$244.95Subtotal: -
WISECO Piston Kit - XT/TT 350 4674M08600
WISECO
$185.95WISECO Piston Kit XT/TT 350 4674M08600Pistons come without gasket kit9102916- SKU:
- 9102916
- Availability:
- Ships Same Business Day
- Weight:
- 0.97 LBS
- BORE - OVERSIZE:
- STANDARD
- BORE - OVERSIZE METRIC:
- STANDARD
- DISPLACEMENT:
- 346 CC
- ENGINE TYPE:
- 4-STROKE
- RIDING STYLE:
- OFF-ROAD
- STROKE LENGTH METRIC:
- 59.60 MM
- BORE SIZE METRIC:
- 86.00 MM
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PISTON MATERIAL:
- FORGED
- PRODUCT NAME:
- PISTON
- UNITS:
- EACH
- COMPRESSION RATIO IMPERIAL:
- 9.0:1
$185.95 -
WISECO Piston Kit - XT/TT 350 4674M08750
WISECO
$203.95WISECO Piston Kit XT/TT 350 4674M08750Pistons come without gasket kit9102917- SKU:
- 9102917
- Availability:
- Ships Same Business Day
- Weight:
- 1.01 LBS
- ENGINE TYPE:
- 4-STROKE
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PISTON MATERIAL:
- FORGED
- PRODUCT NAME:
- PISTON
- UNITS:
- EACH
- BORE - OVERSIZE:
- +1,00 MM
- BORE SIZE METRIC:
- 87.00 MM
- DISPLACEMENT:
- 346 CC
- STROKE LENGTH METRIC:
- 59.60 MM
- BORE - OVERSIZE METRIC:
- +1.00 MM
- COMPRESSION RATIO IMPERIAL:
- 9.0:1
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
$203.95 -
WISECO Piston - +.50 mm - Yamaha WR 500 Z/YZ 490 546M08750
WISECO
$234.72WISECO Piston +.50 mm Yamaha WR 500 Z/YZ 490 546M08750Forged from high-silicon aluminum alloy for maximum strength and dependability, Wiseco offers a complete range of popular piston models and years for both trail and racing applications, Durability,...546M08750- SKU:
- 546M08750
- Availability:
- Ships Same Business Day
- Weight:
- 1.15 LBS
- BORE - OVERSIZE:
- +0,50 MM
- BORE - OVERSIZE METRIC:
- +0.50 MM
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- DISPLACEMENT:
- 487 CC
- STROKE LENGTH:
- 82,00 MM
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PRODUCT NAME:
- PISTON
- BORE SIZE METRIC:
- 87.50 MM
- PISTON MATERIAL:
- FORGED
- STROKE LENGTH METRIC:
- 82.00 MM
$234.72Qty in Cart: 0Quantity:Price:$234.72Subtotal: -
WISECO Piston - +1.00 mm - Yamaha WR 500 Z/YZ 490 546M08800
WISECO
$234.95WISECO Piston +1.00 mm Yamaha WR 500 Z/YZ 490 546M08800Forged from high-silicon aluminum alloy for maximum strength and dependability, Wiseco offers a complete range of popular piston models and years for both trail and racing applications, Durability,...546M08800- SKU:
- 546M08800
- Availability:
- Ships Same Business Day
- Weight:
- 1.40 LBS
- BORE - OVERSIZE METRIC:
- +1.00 MM
- RIDING STYLE:
- OFF-ROAD
- PISTON MATERIAL:
- ALUMINUM ALLOY
- UNITS:
- EACH
- DISPLACEMENT:
- 487 CC
- STROKE LENGTH:
- 82,00 MM
- BORE - OVERSIZE:
- +1,00 MM
- BORE SIZE METRIC:
- 88.00 MM
- PISTON MATERIAL:
- FORGED
- PRODUCT NAME:
- PISTON
- STROKE LENGTH METRIC:
- 82.00 MM
$234.95 -
WISECO Piston - +1.50 mm - Yamaha WR 500 Z/YZ 490 546M08850
WISECO
$244.95WISECO Piston +1.50 mm Yamaha WR 500 Z/YZ 490 546M08850Forged from high-silicon aluminum alloy for maximum strength and dependability, Wiseco offers a complete range of popular piston models and years for both trail and racing applications, Durability,...546M08850- SKU:
- 546M08850
- Availability:
- Ships Same Business Day
- Weight:
- 1.25 LBS
- BORE - OVERSIZE METRIC:
- +1.50 MM
- PISTON MATERIAL:
- FORGED
- STROKE LENGTH METRIC:
- 82.00 MM
- BORE SIZE METRIC:
- 88.50 MM
- DISPLACEMENT:
- 487 CC
- STROKE LENGTH:
- 82,00 MM
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PRODUCT NAME:
- PISTON
- BORE - OVERSIZE:
- +1,50 MM
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
$244.95 -
WISECO Piston - +2.00 mm - Yamaha WR 500 Z/YZ 490 546M08900
WISECO
$244.95WISECO Piston +2.00 mm Yamaha WR 500 Z/YZ 490 546M08900Forged from high-silicon aluminum alloy for maximum strength and dependability, Wiseco offers a complete range of popular piston models and years for both trail and racing applications, Durability,...546M08900- SKU:
- 546M08900
- Availability:
- Ships Same Business Day
- Weight:
- 1.25 LBS
- BORE - OVERSIZE METRIC:
- +2.00 MM
- DISPLACEMENT:
- 487 CC
- PISTON MATERIAL:
- ALUMINUM ALLOY
- STROKE LENGTH:
- 82,00 MM
- UNITS:
- EACH
- BORE - OVERSIZE:
- +2,00 MM
- PISTON MATERIAL:
- FORGED
- PRODUCT NAME:
- PISTON
- RIDING STYLE:
- OFF-ROAD
- BORE SIZE METRIC:
- 89.00 MM
- STROKE LENGTH METRIC:
- 82.00 MM
$244.95 -
WISECO Piston - 76 mm 549M07600
WISECO
$141.18WISECO Piston 76 mm 549M07600Most Wiseco 2-cycle pistons are forged from high-silicone bar stock, Greater strength and lower expansion at high temperatures, All Wiseco High-Performance pistons are priced with rings, wrist pins and circlips, Wiseco ring...549M07600- SKU:
- 549M07600
- Availability:
- Ships Same Business Day
- Weight:
- 0.80 LBS
$141.18Qty in Cart: 0Quantity:Price:$141.18Subtotal: -
WISECO Piston - 76.5 mm 549M07650
WISECO
$149.95WISECO Piston 76.5 mm 549M07650Most Wiseco 2-cycle pistons are forged from high-silicone bar stock, Greater strength and lower expansion at high temperatures, All Wiseco High-Performance pistons are priced with rings, wrist pins and circlips, Wiseco ring...549M07650- SKU:
- 549M07650
- Availability:
- Ships Same Business Day
- Weight:
- 0.80 LBS
- BORE - OVERSIZE METRIC:
- +0.50 MM
- DISPLACEMENT:
- 299 CC
- BORE SIZE METRIC:
- 76.50 MM
- PISTON MATERIAL:
- ALUMINUM
- RIDING STYLE:
- WATERCRAFT
- BORE - OVERSIZE:
- +0,50 MM
- PRODUCT NAME:
- PISTON
- UNITS:
- EACH
$149.95 -
WISECO Piston - 77 mm 549M07700
WISECO
$149.95WISECO Piston 77 mm 549M07700Most Wiseco 2-cycle pistons are forged from high-silicone bar stock, Greater strength and lower expansion at high temperatures, All Wiseco High-Performance pistons are priced with rings, wrist pins and circlips, Wiseco ring...549M07700- SKU:
- 549M07700
- Availability:
- Ships Same Business Day
- Weight:
- 0.80 LBS
- BORE - OVERSIZE:
- +1,00 MM
- RIDING STYLE:
- WATERCRAFT
- BORE - OVERSIZE METRIC:
- +1.00 MM
- DISPLACEMENT:
- 303 CC
- PISTON MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- PISTON
- UNITS:
- EACH
- BORE SIZE METRIC:
- 77.00 MM
$149.95 -
On Sale
WISECO Piston - 77.5 mm 549M07750
WISECO
MSRP: $154.23Now: $105.26Was: $161.94WISECO Piston 77.5 mm 549M07750Most Wiseco 2-cycle pistons are forged from high-silicone bar stock, Greater strength and lower expansion at high temperatures, All Wiseco High-Performance pistons are priced with rings, wrist pins and circlips, Wiseco ring...549M07750- SKU:
- 549M07750
- Availability:
- Ships Same Business Day
- Weight:
- 0.85 LBS
- DISPLACEMENT:
- 660 CC
- BORE SIZE METRIC:
- 77.50 MM
- PRODUCT NAME:
- PISTON
- UNITS:
- EACH
- BORE - OVERSIZE:
- +1,50 MM
- BORE - OVERSIZE METRIC:
- +1.50 MM
- PISTON MATERIAL:
- ALUMINUM
- RIDING STYLE:
- WATERCRAFT
MSRP: $154.23Now: $105.26Was: $161.94 -
WISECO Cam Chain CC020
WISECO
$89.95WISECO Cam Chain CC020Made from premium materials to reduce friction and increase service life, "M" style chain gives you maximum strength and durability, Wiseco's in-house engineering ensures its cam chains exceed OEM specifications and tolerance9250647- SKU:
- 9250647
- Availability:
- Ships Same Business Day
- Weight:
- 0.46 LBS
- TYPE:
- CAM
- CHAIN SIZE:
- 92RH2010
- NUMBER OF LINKS:
- 126
- UNITS:
- EACH
- PRODUCT NAME:
- CHAIN
- RIDING STYLE:
- UTV
- RIDING STYLE:
- ATV
$89.95 -
WISECO Connecting Rod Kit - Racer Elite WPR1402
WISECO
$435.95WISECO Connecting Rod Kit Racer Elite WPR1402Billet machined connecting rod kit, Made in the U.S.A.9230592- SKU:
- 9230592
- Availability:
- Ships Same Business Day
- Weight:
- 0.01 LBS
$435.95Qty in Cart: 0Quantity:Price:$435.95Subtotal: -
WISECO Connecting Rod Kit - Racer Elite WPR1405
WISECO
$447.06WISECO Connecting Rod Kit Racer Elite WPR1405Billet machined connecting rod kit, Made in the U.S.A.9230593- SKU:
- 9230593
- Availability:
- Ships Same Business Day
- Weight:
- 1.80 LBS
- TYPE:
- RACER ELITE
- PRODUCT NAME:
- CONNECTING ROD KIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$447.06Qty in Cart: 0Quantity:Price:$447.06Subtotal: -
On Sale
WISECO Connecting Rod Kit - Racer Elite WPR1409
WISECO
MSRP: $435.95Now: $290.59Was: $447.06WISECO Connecting Rod Kit Racer Elite WPR1409Billet machined connecting rod kit, Made in the U.S.A.9230594- SKU:
- 9230594
- Availability:
- Ships Same Business Day
- Weight:
- 1.75 LBS
- PRODUCT NAME:
- CONNECTING ROD KIT
- TYPE:
- RACER ELITE
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
MSRP: $435.95Now: $290.59Was: $447.06 -
WISECO Connecting Rod Kit - Racer Elite WPR1417
WISECO
$447.06WISECO Connecting Rod Kit Racer Elite WPR1417Billet machined connecting rod kit, Made in the U.S.A.9230595- SKU:
- 9230595
- Availability:
- Ships Same Business Day
- Weight:
- 1.90 LBS
$447.06Qty in Cart: 0Quantity:Price:$447.06Subtotal:
