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 - Standard 762M05400
WISECO
$174.95WISECO Piston Kit Standard 762M05400Pistons come without gasket kit9100729- SKU:
- 9100729
- Availability:
- Ships Same Business Day
- Weight:
- 0.41 LBS
- BORE - OVERSIZE:
- STANDARD
- PISTON MATERIAL:
- ALUMINUM ALLOY
- UNITS:
- EACH
- BORE - OVERSIZE METRIC:
- STANDARD
- PISTON MATERIAL:
- FORGED
- PRODUCT NAME:
- PISTON
- RIDING STYLE:
- OFF-ROAD
- BORE SIZE METRIC:
- 54.00 MM
- DISPLACEMENT:
- 125 CC
- ENGINE TYPE:
- 2-STROKE
- STROKE LENGTH METRIC:
- 54.50 MM
$174.95 -
WISECO Piston Kit - +2.00 mm 762M05600
WISECO
$199.95WISECO Piston Kit +2.00 mm 762M05600Pistons come without gasket kit9100730- SKU:
- 9100730
- Availability:
- Ships Same Business Day
- Weight:
- 0.45 LBS
- ENGINE TYPE:
- 2-STROKE
- PISTON MATERIAL:
- ALUMINUM ALLOY
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- BORE - OVERSIZE:
- +2,00 MM
- BORE SIZE METRIC:
- 56.00 MM
- PRODUCT NAME:
- PISTON
- BORE - OVERSIZE METRIC:
- +2.00 MM
- DISPLACEMENT:
- 134 CC
- PISTON MATERIAL:
- FORGED
- STROKE LENGTH METRIC:
- 54.50 MM
$199.95 -
WISECO Piston Kit - Standard 841M05400
WISECO
$174.95WISECO Piston Kit Standard 841M05400Pistons come without gasket kit9100731- SKU:
- 9100731
- Availability:
- Ships Same Business Day
- Weight:
- 0.41 LBS
- BORE - OVERSIZE:
- STANDARD
- BORE SIZE METRIC:
- 54.00 MM
- UNITS:
- EACH
- DISPLACEMENT:
- 125 CC
- ENGINE TYPE:
- 2-STROKE
- MODEL:
- GP STYLE
- BORE - OVERSIZE METRIC:
- STANDARD
- PISTON MATERIAL:
- ALUMINUM
- PISTON MATERIAL:
- FORGED
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- PISTON KIT
- STROKE LENGTH METRIC:
- 54.50 MM
$174.95 -
WISECO Piston Kit - +2.00 mm - CR125R 841M05600
WISECO
$199.95WISECO Piston Kit +2.00 mm CR125R 841M05600Pistons come without gasket kit9100732- SKU:
- 9100732
- Availability:
- Ships Same Business Day
- Weight:
- 0.45 LBS
- BORE SIZE METRIC:
- 56.00 MM
- MODEL:
- RACER'S CHOICE
- UNITS:
- EACH
- BORE - OVERSIZE:
- +2,00 MM
- PISTON MATERIAL:
- ALUMINUM
- PISTON MATERIAL:
- FORGED
- RIDING STYLE:
- OFF-ROAD
- BORE - OVERSIZE METRIC:
- +2.00 MM
- DISPLACEMENT:
- 125 CC
- ENGINE TYPE:
- 2-STROKE
- PRODUCT NAME:
- PISTON KIT
- STROKE LENGTH METRIC:
- 54.50 MM
$199.95 -
WISECO Piston Kit - Standard - CR125R 840M05400
WISECO
$144.95WISECO Piston Kit Standard CR125R 840M05400Pistons come without gasket kit9100733- SKU:
- 9100733
- Availability:
- Ships Same Business Day
- Weight:
- 0.40 LBS
- BORE - OVERSIZE:
- STANDARD
- BORE - OVERSIZE METRIC:
- STANDARD
- BORE SIZE METRIC:
- 54.00 MM
- DISPLACEMENT:
- 125 CC
- ENGINE TYPE:
- 2-STROKE
- MODEL:
- PRO-LITE
- UNITS:
- EACH
- PISTON MATERIAL:
- FORGED
- RIDING STYLE:
- OFF-ROAD
- STROKE LENGTH METRIC:
- 54.50 MM
- PISTON MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- PISTON KIT
$144.95 -
WISECO Piston Kit - Standard - CR125R 859M05400
WISECO
$138.27WISECO Piston Kit Standard CR125R 859M05400Pistons come without gasket kit9100735- SKU:
- 9100735
- Availability:
- Ships Same Business Day
- Weight:
- 0.46 LBS
$138.27Qty in Cart: 0Quantity:Price:$138.27Subtotal: -
WISECO Piston Kit - Standard - CR250R 802M06640
WISECO
$222.61WISECO Piston Kit Standard CR250R 802M06640Pistons come without gasket kit9100736- SKU:
- 9100736
- Availability:
- Ships Same Business Day
- Weight:
- 0.45 LBS
$222.61Qty in Cart: 0Quantity:Price:$222.61Subtotal: -
WISECO Piston Kit with Gaskets PK1366
WISECO
$334.95WISECO Piston Kit with Gaskets PK1366Most 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...9030574- SKU:
- 9030574
- Availability:
- Ships Same Business Day
- Weight:
- 1.80 LBS
- BORE - OVERSIZE:
- STANDARD
- BORE - OVERSIZE METRIC:
- STANDARD
- COMPRESSION RATIO IMPERIAL:
- 12.0:1
- DISPLACEMENT:
- 449 CC
- PISTON DIAMETER METRIC:
- 95.94 MM
- PRODUCT NAME:
- REBUILD KIT
- SKIRT COATING:
- ARMORGLIDE®
- PISTON MATERIAL:
- 2618 ALUMINUM ALLOY
- RIDING STYLE:
- OFF-ROAD
- BORE SIZE METRIC:
- 96.00 MM
- ENGINE TYPE:
- 4-STROKE
- MODEL:
- FORGED SERIES
- TYPE:
- TOP END
- STROKE LENGTH METRIC:
- 62.10 MM
- UNITS:
- KIT
$334.95Qty in Cart: 0Quantity:Price:$334.95Subtotal: -
WISECO Piston Kit with Gaskets PK1403
WISECO
$319.95WISECO Piston Kit with Gaskets PK1403Most 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...9030575- SKU:
- 9030575
- Availability:
- Ships Same Business Day
- Weight:
- 1.70 LBS
- BORE - OVERSIZE METRIC:
- STANDARD
- BORE SIZE METRIC:
- 96.00 MM
- DISPLACEMENT:
- 449 CC
- PISTON DIAMETER METRIC:
- STANDARD
- SKIRT COATING:
- ARMORGLIDE®
- BORE - OVERSIZE:
- STANDARD
- COMPRESSION RATIO IMPERIAL:
- 12.0:1
- ENGINE TYPE:
- 4-STROKE
- MODEL:
- FORGED SERIES
- PISTON MATERIAL:
- 2618 ALUMINUM ALLOY
- PRODUCT NAME:
- REBUILD KIT
- RIDING STYLE:
- OFF-ROAD
- STROKE LENGTH METRIC:
- 62.10 MM
- TYPE:
- TOP END
- UNITS:
- KIT
$319.95 -
WISECO Piston Kit with Gaskets PK1405
WISECO
$349.95WISECO Piston Kit with Gaskets PK1405Most 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...9030576- SKU:
- 9030576
- Availability:
- Ships Same Business Day
- Weight:
- 1.65 LBS
- MODEL:
- FORGED SERIES
- STROKE LENGTH METRIC:
- 62.10 MM
- BORE SIZE METRIC:
- 96.00 MM
- ENGINE TYPE:
- 4-STROKE
- TYPE:
- TOP END
- COMPRESSION RATIO IMPERIAL:
- 13.0:1
- DISPLACEMENT:
- 449 CC
- PISTON DIAMETER METRIC:
- STANDARD
- PISTON MATERIAL:
- 2618 ALUMINUM ALLOY
- RIDING STYLE:
- OFF-ROAD
- SKIRT COATING:
- ARMORGLIDE®
- UNITS:
- KIT
- BORE - OVERSIZE:
- STANDARD
- BORE - OVERSIZE METRIC:
- STANDARD
- PRODUCT NAME:
- REBUILD KIT
$349.95 -
WISECO Piston Kit with Gaskets PK1279
WISECO
$179.95WISECO Piston Kit with Gaskets PK1279Most 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...9030579- SKU:
- 9030579
- Availability:
- Ships Same Business Day
- Weight:
- 0.80 LBS
- BORE SIZE METRIC:
- 49.00 MM
- DISPLACEMENT:
- 79.7 CC
- MODEL:
- FORGED SERIES
- SKIRT COATING:
- NON-COATED
- BORE - OVERSIZE:
- +1,50 MM
- COMPRESSION RATIO IMPERIAL:
- 9.7:1
- PISTON DIAMETER METRIC:
- 48.97 MM
- PISTON MATERIAL:
- 4032 ALUMINUM ALLOY
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- BORE - OVERSIZE METRIC:
- +1.50 MM
- TYPE:
- TOP END
- ENGINE TYPE:
- 4-STROKE
- PRODUCT NAME:
- REBUILD KIT
- STROKE LENGTH METRIC:
- 45.00 MM
$179.95 -
WISECO Piston Kit - Standard - KX85 862M04850
WISECO
$134.95WISECO Piston Kit Standard KX85 862M04850Pistons come without gasket kit9100762- SKU:
- 9100762
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- BORE - OVERSIZE:
- STANDARD
- BORE - OVERSIZE METRIC:
- STANDARD
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PRODUCT NAME:
- PISTON
- BORE SIZE METRIC:
- 48.50 MM
- PISTON MATERIAL:
- FORGED
- RIDING STYLE:
- OFF-ROAD
- DISPLACEMENT:
- 84,9 CC
- ENGINE TYPE:
- 2-STROKE
- UNITS:
- EACH
- STROKE LENGTH METRIC:
- 45.80 MM
$134.95 -
WISECO Piston Kit - Standard - KX250 844M06640
WISECO
$222.61WISECO Piston Kit Standard KX250 844M06640Pistons come without gasket kit9100763- SKU:
- 9100763
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- BORE - OVERSIZE:
- STANDARD
- PISTON MATERIAL:
- ALUMINUM ALLOY
- UNITS:
- EACH
- DISPLACEMENT:
- 249,3 CC
- ENGINE TYPE:
- 2-STROKE
- BORE - OVERSIZE METRIC:
- STANDARD
- BORE SIZE METRIC:
- 66.40 MM
- PISTON MATERIAL:
- FORGED
- PRODUCT NAME:
- PISTON
- RIDING STYLE:
- OFF-ROAD
- STROKE LENGTH METRIC:
- 72.00 MM
$222.61Qty in Cart: 0Quantity:Price:$222.61Subtotal: -
WISECO Piston Kit - KLX110 4875M05350
WISECO
$154.95WISECO Piston Kit KLX110 4875M05350Pistons come without gasket kit9100764- SKU:
- 9100764
- Availability:
- Ships Same Business Day
- Weight:
- 0.35 LBS
- ENGINE TYPE:
- 4-STROKE
- PISTON MATERIAL:
- ALUMINUM ALLOY
- STROKE LENGTH METRIC:
- 50.60 MM
- UNITS:
- EACH
- BORE - OVERSIZE:
- +0,50 MM
- DISPLACEMENT:
- 112 CC
- PISTON MATERIAL:
- FORGED
- PRODUCT NAME:
- PISTON
- RIDING STYLE:
- OFF-ROAD
- BORE - OVERSIZE METRIC:
- +0.50 MM
- BORE SIZE METRIC:
- 53.50 MM
$154.95Qty in Cart: 0Quantity:Price:$154.95Subtotal: -
WISECO Piston Kit - KLX110 4875M05400
WISECO
$154.95WISECO Piston Kit KLX110 4875M05400Pistons come without gasket kit9100765- SKU:
- 9100765
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- BORE SIZE METRIC:
- 54.00 MM
- DISPLACEMENT:
- 112 CC
- ENGINE TYPE:
- 4-STROKE
- PISTON MATERIAL:
- ALUMINUM ALLOY
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- STROKE LENGTH METRIC:
- 50.60 MM
- BORE - OVERSIZE METRIC:
- +1.00 MM
- PRODUCT NAME:
- PISTON
- BORE - OVERSIZE:
- +1,00 MM
- PISTON MATERIAL:
- FORGED
$154.95 -
WISECO Piston Kit - KLX400 4795M09450
WISECO
$269.95WISECO Piston Kit KLX400 4795M09450Pistons come without gasket kit9100768- SKU:
- 9100768
- Availability:
- Ships Same Business Day
- Weight:
- 1.05 LBS
- BORE - OVERSIZE:
- +4,50 MM
- BORE - OVERSIZE METRIC:
- +4.50 MM
- BORE SIZE METRIC:
- 94.50 MM
- RIDING STYLE:
- OFF-ROAD
- STROKE LENGTH METRIC:
- 62.60 MM
- ENGINE TYPE:
- 4-STROKE
- PISTON MATERIAL:
- ALUMINUM ALLOY
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- DISPLACEMENT:
- 440 CC
- PISTON MATERIAL:
- FORGED
- PRODUCT NAME:
- PISTON
- SKIRT COATING:
- ARMORGLIDE®
$269.95 -
WISECO Piston Kit - Standard 4900M09600
WISECO
$239.95WISECO Piston Kit Standard 4900M09600Pistons come without gasket kit9100769- SKU:
- 9100769
- Availability:
- Ships Same Business Day
- Weight:
- 0.91 LBS
- BORE SIZE METRIC:
- 96.00 MM
- COMPRESSION RATIO IMPERIAL:
- 12.0:1
- DISPLACEMENT:
- 449 CC
- PISTON MATERIAL:
- FORGED
- RIDING STYLE:
- OFF-ROAD
- ENGINE TYPE:
- 4-STROKE
- PISTON MATERIAL:
- ALUMINUM ALLOY
- RIDING STYLE:
- STREET
- STROKE LENGTH METRIC:
- 62.10 MM
- UNITS:
- EACH
- BORE - OVERSIZE:
- STANDARD
- BORE - OVERSIZE METRIC:
- STANDARD
- PRODUCT NAME:
- PISTON
- SKIRT COATING:
- ARMORGLIDE®
$239.95 -
WISECO Piston Kit - Standard 4901M09600
WISECO
$268.67WISECO Piston Kit Standard 4901M09600Pistons come without gasket kit9100771- SKU:
- 9100771
- Availability:
- Ships Same Business Day
- Weight:
- 1.05 LBS
$268.67Qty in Cart: 0Quantity:Price:$268.67Subtotal: -
WISECO Piston Kit - Standard - 200/EXC/MXC 770M06400
WISECO
$174.95WISECO Piston Kit Standard 200/EXC/MXC 770M06400Pistons come without gasket kit9100773- SKU:
- 9100773
- Availability:
- Ships Same Business Day
- Weight:
- 0.65 LBS
- DISPLACEMENT:
- 193 CC
- ENGINE TYPE:
- 2-STROKE
- MODEL:
- PRO-LITE
- STROKE LENGTH METRIC:
- 60.00 MM
- PISTON MATERIAL:
- FORGED
- PRODUCT NAME:
- PISTON
- RIDING STYLE:
- OFF-ROAD
- BORE - OVERSIZE:
- STANDARD
- BORE - OVERSIZE METRIC:
- STANDARD
- BORE SIZE METRIC:
- 64.00 MM
- PISTON MATERIAL:
- ALUMINUM ALLOY
- UNITS:
- EACH
$174.95 -
WISECO Piston Kit - Standard - 520SX/EXC 4731M09500
WISECO
$254.95WISECO Piston Kit Standard 520SX/EXC 4731M09500Pistons come without gasket kit9100787- SKU:
- 9100787
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
- DISPLACEMENT:
- 510 CC
- ENGINE TYPE:
- 4-STROKE
- RIDING STYLE:
- ATV
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- BORE SIZE METRIC:
- 95.00 MM
- COMPRESSION RATIO IMPERIAL:
- 11.0:1
- STROKE LENGTH METRIC:
- 72.00 MM
- BORE - OVERSIZE:
- STANDARD
- BORE - OVERSIZE METRIC:
- STANDARD
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PRODUCT NAME:
- PISTON
- RIDING STYLE:
- STREET
- PISTON MATERIAL:
- FORGED
$254.95
