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 - KX125 - 2001-2008 - GP 788M05800
WISECO
$199.95WISECO Piston Kit KX125 2001-2008 GP 788M05800Pistons come without gasket kit9101239- SKU:
- 9101239
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
- BORE - OVERSIZE METRIC:
- +4.00 MM
- BORE SIZE METRIC:
- 58.00 MM
- PISTON MATERIAL:
- FORGED
- STROKE LENGTH METRIC:
- 54.50 MM
- DISPLACEMENT:
- 144 CC
- PRODUCT NAME:
- PISTON
- BORE - OVERSIZE:
- +4,00 MM
- ENGINE TYPE:
- 2-STROKE
- MODEL:
- GP STYLE
- PISTON MATERIAL:
- ALUMINUM ALLOY
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
$199.95 -
WISECO Piston Kit - YZ125 - 2002-2004 797M05450
WISECO
$144.95WISECO Piston Kit YZ125 2002-2004 797M05450Pistons come without gasket kit9101240- SKU:
- 9101240
- Availability:
- Ships Same Business Day
- Weight:
- 0.41 LBS
- PISTON MATERIAL:
- FORGED
- STROKE LENGTH METRIC:
- 54.50 MM
- BORE SIZE METRIC:
- 54.50 MM
- DISPLACEMENT:
- 125 CC
- BORE - OVERSIZE:
- +0,50 MM
- PRODUCT NAME:
- PISTON
- BORE - OVERSIZE METRIC:
- +0.50 MM
- ENGINE TYPE:
- 2-STROKE
- MODEL:
- PRO-LITE
- PISTON MATERIAL:
- ALUMINUM ALLOY
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
$144.95 -
WISECO Piston Kit with Gaskets PK1553
WISECO
$179.95WISECO Piston Kit with Gaskets PK1553Most 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...9030711- SKU:
- 9030711
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- BORE - OVERSIZE:
- STANDARD
- PISTON DIAMETER METRIC:
- 46.95 MM
- SKIRT COATING:
- NON-COATED
- STROKE LENGTH METRIC:
- 47.80 MM
- BORE - OVERSIZE METRIC:
- STANDARD
- BORE SIZE METRIC:
- 47.00 MM
- PRODUCT NAME:
- REBUILD KIT
- DISPLACEMENT:
- 82 CC
- ENGINE TYPE:
- 2-STROKE
- MODEL:
- PRO-LITE
- PISTON MATERIAL:
- 4032 ALUMINUM ALLOY
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TOP END
- UNITS:
- KIT
$179.95Qty in Cart: 0Quantity:Price:$179.95Subtotal: -
WISECO Piston Kit with Gaskets PK1557
WISECO
$190.51WISECO Piston Kit with Gaskets PK1557Most 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...9030715- SKU:
- 9030715
- Availability:
- Ships Same Business Day
- Weight:
- 0.77 LBS
$190.51Qty in Cart: 0Quantity:Price:$190.51Subtotal: -
WISECO Piston Kit with Gaskets PK1567
WISECO
$264.95WISECO Piston Kit with Gaskets PK1567Most 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...9030720- SKU:
- 9030720
- Availability:
- Ships Same Business Day
- Weight:
- 1.40 LBS
- ENGINE TYPE:
- 2-STROKE
- MODEL:
- PRO-LITE
- STROKE LENGTH METRIC:
- 68.00 MM
- TYPE:
- TOP END
- BORE SIZE METRIC:
- 68.00 MM
- SKIRT COATING:
- NON-COATED
- UNITS:
- KIT
- PISTON DIAMETER METRIC:
- 67.96 MM
- PISTON MATERIAL:
- 4032 ALUMINUM ALLOY
- RIDING STYLE:
- OFF-ROAD
- BORE - OVERSIZE:
- STANDARD
- BORE - OVERSIZE METRIC:
- STANDARD
- DISPLACEMENT:
- 246.8 CC
- PRODUCT NAME:
- REBUILD KIT
$264.95Qty in Cart: 0Quantity:Price:$264.95Subtotal: -
WISECO Piston Kit with Gaskets PK1569
WISECO
$264.95WISECO Piston Kit with Gaskets PK1569Most 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...9030722- SKU:
- 9030722
- Availability:
- Ships Same Business Day
- Weight:
- 1.49 LBS
- SKIRT COATING:
- NON-COATED
- STROKE LENGTH METRIC:
- 68.00 MM
- BORE - OVERSIZE METRIC:
- +1.00 MM
- BORE SIZE METRIC:
- 69.00 MM
- ENGINE TYPE:
- 2-STROKE
- MODEL:
- PRO-LITE
- PISTON MATERIAL:
- 4032 ALUMINUM ALLOY
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TOP END
- UNITS:
- KIT
- DISPLACEMENT:
- 246.8 CC
- PISTON DIAMETER METRIC:
- 68.96 MM
- PRODUCT NAME:
- REBUILD KIT
- BORE - OVERSIZE:
- +1,00 MM
$264.95 -
WISECO Piston Kit - CR125 - GP 841M05700
WISECO
$198.42WISECO Piston Kit CR125 GP 841M05700Pistons come without gasket kit9101254- SKU:
- 9101254
- Availability:
- Ships Same Business Day
- Weight:
- 0.44 LBS
$198.42Qty in Cart: 0Quantity:Price:$198.42Subtotal: -
WISECO Piston Kit with Gaskets PK1571
WISECO
$194.95WISECO Piston Kit with Gaskets PK1571Most 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...9030724- SKU:
- 9030724
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- BORE SIZE METRIC:
- 54.00 MM
- DISPLACEMENT:
- 125 CC
- PRODUCT NAME:
- REBUILD KIT
- PISTON DIAMETER METRIC:
- 53.95 MM
- STROKE LENGTH METRIC:
- 54.50 MM
- BORE - OVERSIZE:
- STANDARD
- BORE - OVERSIZE METRIC:
- STANDARD
- SKIRT COATING:
- NON-COATED
- UNITS:
- KIT
- ENGINE TYPE:
- 2-STROKE
- MODEL:
- PRO-LITE
- PISTON MATERIAL:
- 4032 ALUMINUM ALLOY
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TOP END
$194.95 -
WISECO Piston Kit with Gaskets PK1580
WISECO
$259.95WISECO Piston Kit with Gaskets PK1580Forged from high-silicon aluminum alloy for maximum strength and dependability, Contain all necessary components for overboring or rebuilding your top end, Feature forged pistons, rings, wrist pins, circlips, and top...9030731- SKU:
- 9030731
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
- BORE - OVERSIZE:
- +2,00 MM
- MODEL:
- RACER'S CHOICE
- TYPE:
- TOP END
- UNITS:
- EACH
- BORE - OVERSIZE METRIC:
- +2.00 MM
- DISPLACEMENT:
- 134 CC
- PISTON MATERIAL:
- ALUMINUM
- RIDING STYLE:
- OFF-ROAD
- STROKE LENGTH METRIC:
- 54.50 MM
- BORE SIZE METRIC:
- 56.00 MM
- COOLING SYSTEM:
- AIR COOLED
- PISTON MATERIAL:
- FORGED
- PRODUCT NAME:
- REBUILD KIT
$259.95 -
WISECO Piston Kit with Gaskets PK1581
WISECO
$244.95WISECO Piston Kit with Gaskets PK1581Forged from high-silicon aluminum alloy for maximum strength and dependability, Contain all necessary components for overboring or rebuilding your top end, Feature forged pistons, rings, wrist pins, circlips, and top...9030732- SKU:
- 9030732
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- PRODUCT NAME:
- REBUILD KIT
- STROKE LENGTH METRIC:
- 54.50 MM
- BORE SIZE METRIC:
- 54.00 MM
- PISTON MATERIAL:
- ALUMINUM
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TOP END
- BORE - OVERSIZE:
- STANDARD
- MODEL:
- RACER'S CHOICE
- PISTON MATERIAL:
- FORGED
- UNITS:
- EACH
- BORE - OVERSIZE METRIC:
- STANDARD
- COOLING SYSTEM:
- AIR COOLED
- DISPLACEMENT:
- 125 CC
$244.95Qty in Cart: 0Quantity:Price:$244.95Subtotal: -
WISECO Piston Kit with Gaskets PK1582
WISECO
$264.95WISECO Piston Kit with Gaskets PK1582Forged from high-silicon aluminum alloy for maximum strength and dependability, Contain all necessary components for overboring or rebuilding your top end, Feature forged pistons, rings, wrist pins, circlips, and top...9030733- SKU:
- 9030733
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- DISPLACEMENT:
- 134 CC
- PRODUCT NAME:
- REBUILD KIT
- STROKE LENGTH METRIC:
- 54.50 MM
- COOLING SYSTEM:
- AIR COOLED
- BORE - OVERSIZE:
- +2,00 MM
- BORE SIZE METRIC:
- 56.00 MM
- MODEL:
- RACER'S CHOICE
- PISTON MATERIAL:
- FORGED
- UNITS:
- EACH
- BORE - OVERSIZE METRIC:
- +2.00 MM
- PISTON MATERIAL:
- ALUMINUM
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TOP END
$264.95 -
WISECO Piston Kit with Gaskets PK1659
WISECO
$284.95WISECO Piston Kit with Gaskets PK1659Most 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...9030734- SKU:
- 9030734
- Availability:
- Ships Same Business Day
- Weight:
- 1.70 LBS
- BORE - OVERSIZE:
- STANDARD
- BORE - OVERSIZE METRIC:
- STANDARD
- MODEL:
- FORGED SERIES
- RIDING STYLE:
- STREET
- SKIRT COATING:
- ARMORGLIDE®
- BORE SIZE METRIC:
- 90.00 MM
- COMPRESSION RATIO IMPERIAL:
- 12.2:1
- PRODUCT NAME:
- REBUILD KIT
- STROKE LENGTH METRIC:
- 62.60 MM
- DISPLACEMENT:
- 398 CC
- ENGINE TYPE:
- 4-STROKE
- PISTON DIAMETER METRIC:
- 89.92 MM
- PISTON MATERIAL:
- 2618 ALUMINUM ALLOY
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TOP END
- UNITS:
- KIT
$284.95 -
WISECO Piston Kit with Gaskets PK1661
WISECO
$294.95WISECO Piston Kit with Gaskets PK1661Most 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...9030736- SKU:
- 9030736
- Availability:
- Ships Same Business Day
- Weight:
- 1.60 LBS
- BORE - OVERSIZE:
- STANDARD
- BORE - OVERSIZE METRIC:
- STANDARD
- COMPRESSION RATIO IMPERIAL:
- 13.5:1
- RIDING STYLE:
- OFF-ROAD
- SKIRT COATING:
- ARMORGLIDE®
- UNITS:
- KIT
- BORE SIZE METRIC:
- 90.00 MM
- MODEL:
- FORGED SERIES
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- REBUILD KIT
- STROKE LENGTH METRIC:
- 62.60 MM
- DISPLACEMENT:
- 398 CC
- ENGINE TYPE:
- 4-STROKE
- PISTON DIAMETER METRIC:
- 89.92 MM
- PISTON MATERIAL:
- 2618 ALUMINUM ALLOY
- RIDING STYLE:
- ATV
- TYPE:
- TOP END
$294.95 -
WISECO Piston Kit with Gaskets PK1683
WISECO
$189.95WISECO Piston Kit with Gaskets PK1683Most 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...9030740- SKU:
- 9030740
- Availability:
- Ships Same Business Day
- Weight:
- 0.65 LBS
- BORE SIZE METRIC:
- 54.50 MM
- DISPLACEMENT:
- 123.7 CC
- PISTON DIAMETER METRIC:
- 54.45 MM
- TYPE:
- TOP END
- BORE - OVERSIZE METRIC:
- +0.50 MM
- MODEL:
- FORGED SERIES
- SKIRT COATING:
- NON-COATED
- BORE - OVERSIZE:
- +0,50 MM
- COMPRESSION RATIO IMPERIAL:
- 11.0:1
- PISTON MATERIAL:
- 4032 ALUMINUM ALLOY
- RIDING STYLE:
- OFF-ROAD
- STROKE LENGTH METRIC:
- 54.00 MM
- UNITS:
- KIT
- ENGINE TYPE:
- 4-STROKE
- PRODUCT NAME:
- REBUILD KIT
$189.95 -
WISECO Piston Kit with Gaskets PK1684
WISECO
$189.95WISECO Piston Kit with Gaskets PK1684Most 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...9030741- SKU:
- 9030741
- Availability:
- Ships Same Business Day
- Weight:
- 0.95 LBS
- BORE - OVERSIZE:
- +1,00 MM
- BORE - OVERSIZE METRIC:
- +1.00 MM
- COMPRESSION RATIO IMPERIAL:
- 11.0:1
- RIDING STYLE:
- OFF-ROAD
- SKIRT COATING:
- NON-COATED
- UNITS:
- KIT
- BORE SIZE METRIC:
- 55.00 MM
- MODEL:
- FORGED SERIES
- STROKE LENGTH METRIC:
- 54.00 MM
- DISPLACEMENT:
- 123.7 CC
- PISTON DIAMETER METRIC:
- 54.95 MM
- PRODUCT NAME:
- REBUILD KIT
- ENGINE TYPE:
- 4-STROKE
- PISTON MATERIAL:
- 4032 ALUMINUM ALLOY
- TYPE:
- TOP END
$189.95 -
WISECO Piston Kit with Gaskets PK1682
WISECO
$189.95WISECO Piston Kit with Gaskets PK1682Most 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...9030742- SKU:
- 9030742
- Availability:
- Ships Same Business Day
- Weight:
- 0.77 LBS
- BORE SIZE METRIC:
- 54.00 MM
- DISPLACEMENT:
- 123.7 CC
- PRODUCT NAME:
- REBUILD KIT
- MODEL:
- FORGED SERIES
- PISTON DIAMETER METRIC:
- 53.95 MM
- STROKE LENGTH METRIC:
- 54.00 MM
- BORE - OVERSIZE:
- STANDARD
- BORE - OVERSIZE METRIC:
- STANDARD
- SKIRT COATING:
- NON-COATED
- UNITS:
- KIT
- COMPRESSION RATIO IMPERIAL:
- 11.0:1
- ENGINE TYPE:
- 4-STROKE
- PISTON MATERIAL:
- 4032 ALUMINUM ALLOY
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TOP END
$189.95 -
WISECO Piston Kit - Standard - CRF250R/X 4829M07800
WISECO
$194.95WISECO Piston Kit Standard CRF250R/X 4829M07800Pistons come without gasket kit9100333- SKU:
- 9100333
- Availability:
- Ships Same Business Day
- Weight:
- 0.53 LBS
- ENGINE TYPE:
- 4-STROKE
- PISTON MATERIAL:
- ALUMINUM ALLOY
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- BORE - OVERSIZE:
- STANDARD
- BORE - OVERSIZE METRIC:
- STANDARD
- COMPRESSION RATIO IMPERIAL:
- 12.9:1
- PRODUCT NAME:
- PISTON
- SKIRT COATING:
- ARMORGLIDE®
- STROKE LENGTH METRIC:
- 52.20 MM
- DISPLACEMENT:
- 249 CC
- BORE SIZE METRIC:
- 78.00 MM
- PISTON MATERIAL:
- FORGED
$194.95 -
WISECO Piston Kit - Standard - CRF450R/X 4820M09600
WISECO
$205.95WISECO Piston Kit Standard CRF450R/X 4820M09600Pistons come without gasket kit9100334- SKU:
- 9100334
- Availability:
- Ships Same Business Day
- Weight:
- 0.90 LBS
- BORE - OVERSIZE:
- STANDARD
- BORE - OVERSIZE METRIC:
- STANDARD
- PISTON MATERIAL:
- ALUMINUM ALLOY
- UNITS:
- EACH
- ENGINE TYPE:
- 4-STROKE
- STROKE LENGTH METRIC:
- 62.10 MM
- COMPRESSION RATIO IMPERIAL:
- 12.0:1
- PISTON MATERIAL:
- FORGED
- PRODUCT NAME:
- PISTON
- RIDING STYLE:
- OFF-ROAD
- SKIRT COATING:
- ARMORGLIDE®
- BORE SIZE METRIC:
- 96.00 MM
- DISPLACEMENT:
- 449 CC
$205.95 -
WISECO Piston Kit - Standard - CRF450R/X 4822M09600
WISECO
$269.95WISECO Piston Kit Standard CRF450R/X 4822M09600Pistons come without gasket kit9100335- SKU:
- 9100335
- Availability:
- Ships Same Business Day
- Weight:
- 0.90 LBS
- BORE - OVERSIZE:
- STANDARD
- ENGINE TYPE:
- 4-STROKE
- PISTON MATERIAL:
- ALUMINUM ALLOY
- STROKE LENGTH METRIC:
- 62.10 MM
- UNITS:
- EACH
- BORE - OVERSIZE METRIC:
- STANDARD
- COMPRESSION RATIO IMPERIAL:
- 13.0:1
- PISTON MATERIAL:
- FORGED
- PRODUCT NAME:
- PISTON
- RIDING STYLE:
- OFF-ROAD
- SKIRT COATING:
- ARMORGLIDE®
- BORE SIZE METRIC:
- 96.00 MM
- DISPLACEMENT:
- 449 CC
$269.95 -
WISECO Piston Kit - Standard - XR650L 4562M10000
WISECO
$239.95WISECO Piston Kit Standard XR650L 4562M10000Pistons come without gasket kit9100337- SKU:
- 9100337
- Availability:
- Ships Same Business Day
- Weight:
- 1.38 LBS
- BORE - OVERSIZE:
- STANDARD
- BORE - OVERSIZE METRIC:
- STANDARD
- PRODUCT NAME:
- PISTON
- BORE SIZE METRIC:
- 100.00 MM
- DISPLACEMENT:
- 650 CC
- PISTON MATERIAL:
- FORGED
- RIDING STYLE:
- OFF-ROAD
- ENGINE TYPE:
- 4-STROKE
- PISTON MATERIAL:
- ALUMINUM ALLOY
- UNITS:
- EACH
- COMPRESSION RATIO IMPERIAL:
- 8.7:1
- STROKE LENGTH METRIC:
- 82.00 MM
$239.95
