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 - +0.50 mm - XR70 4880M04750
WISECO
$134.95WISECO Piston Kit +0.50 mm XR70 4880M04750Pistons come without gasket kit9100748- SKU:
- 9100748
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- BORE - OVERSIZE:
- +0,50 MM
- PISTON MATERIAL:
- FORGED
- PRODUCT NAME:
- PISTON
- RIDING STYLE:
- OFF-ROAD
- BORE - OVERSIZE METRIC:
- +0.50 MM
- COMPRESSION RATIO IMPERIAL:
- 10.5:1
- DISPLACEMENT:
- 73 CC
- STROKE LENGTH METRIC:
- 41.40 MM
- BORE SIZE METRIC:
- 47.50 MM
- ENGINE TYPE:
- 4-STROKE
- PISTON MATERIAL:
- ALUMINUM ALLOY
- UNITS:
- EACH
$134.95 -
WISECO Piston Kit with Gaskets PK1223
WISECO
$274.95WISECO Piston Kit with Gaskets PK1223Most 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...9030570- SKU:
- 9030570
- Availability:
- Ships Same Business Day
- Weight:
- 1.56 LBS
- ENGINE TYPE:
- 4-STROKE
- PISTON MATERIAL:
- 2618 ALUMINUM ALLOY
- RIDING STYLE:
- OFF-ROAD
- STROKE LENGTH METRIC:
- 59.50 MM
- TYPE:
- TOP END
- BORE - OVERSIZE:
- +4,00 MM
- BORE - OVERSIZE METRIC:
- +4.00 MM
- SKIRT COATING:
- NON-COATED
- UNITS:
- KIT
- COMPRESSION RATIO IMPERIAL:
- 10.5:1
- PISTON DIAMETER METRIC:
- 76.95 MM
- PRODUCT NAME:
- REBUILD KIT
- BORE SIZE METRIC:
- 77.00 MM
- DISPLACEMENT:
- 250 CC
- MODEL:
- FORGED SERIES
$274.95Qty in Cart: 0Quantity:Price:$274.95Subtotal: -
WISECO Piston Kit - +5.00 mm - XR/CRF100 4773M05800
WISECO
$169.95WISECO Piston Kit +5.00 mm XR/CRF100 4773M05800Pistons come without gasket kit9100752- SKU:
- 9100752
- Availability:
- Ships Same Business Day
- Weight:
- 0.41 LBS
- RIDING STYLE:
- OFF-ROAD
- BORE - OVERSIZE:
- +5,00 MM
- COMPRESSION RATIO IMPERIAL:
- 12.0:1
- BORE SIZE METRIC:
- 58.00 MM
- ENGINE TYPE:
- 4-STROKE
- PISTON MATERIAL:
- ALUMINUM ALLOY
- STROKE LENGTH METRIC:
- 45.00 MM
- UNITS:
- EACH
- BORE - OVERSIZE METRIC:
- +5.00 MM
- DISPLACEMENT:
- 120 CC
- PISTON MATERIAL:
- FORGED
- PRODUCT NAME:
- PISTON
$169.95 -
WISECO Piston Kit - +2.50 mm - XR/XRL250 4466M07550
WISECO
$219.95WISECO Piston Kit +2.50 mm XR/XRL250 4466M07550Pistons come without gasket kit9100753- SKU:
- 9100753
- Availability:
- Ships Same Business Day
- Weight:
- 0.65 LBS
- BORE SIZE METRIC:
- 75.50 MM
- DISPLACEMENT:
- 250 CC
- BORE - OVERSIZE METRIC:
- +2.50 MM
- COMPRESSION RATIO IMPERIAL:
- 10.5:1
- PISTON MATERIAL:
- FORGED
- PRODUCT NAME:
- PISTON
- RIDING STYLE:
- OFF-ROAD
- BORE - OVERSIZE:
- +2,50 MM
- ENGINE TYPE:
- 4-STROKE
- PISTON MATERIAL:
- ALUMINUM ALLOY
- STROKE LENGTH METRIC:
- 59.50 MM
- UNITS:
- EACH
$219.95 -
WISECO Piston Kit - Standard - RT100 771M05200
WISECO
$124.95WISECO Piston Kit Standard RT100 771M05200Pistons come without gasket kit9100795- SKU:
- 9100795
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
- ENGINE TYPE:
- 2-STROKE
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- DISPLACEMENT:
- 97 CC
- BORE - OVERSIZE:
- STANDARD
- BORE - OVERSIZE METRIC:
- STANDARD
- BORE SIZE METRIC:
- 52.00 MM
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PRODUCT NAME:
- PISTON
- STROKE LENGTH METRIC:
- 45.60 MM
- PISTON MATERIAL:
- FORGED
$124.95 -
WISECO Piston Kit - RT100 771M05250
WISECO
$124.95WISECO Piston Kit RT100 771M05250Pistons come without gasket kit9100796- SKU:
- 9100796
- Availability:
- Ships Same Business Day
- Weight:
- 0.44 LBS
- DISPLACEMENT:
- 99 CC
- PRODUCT NAME:
- PISTON
- PISTON MATERIAL:
- FORGED
- RIDING STYLE:
- OFF-ROAD
- BORE - OVERSIZE METRIC:
- +0.50 MM
- BORE SIZE METRIC:
- 52.50 MM
- ENGINE TYPE:
- 2-STROKE
- PISTON MATERIAL:
- ALUMINUM ALLOY
- UNITS:
- EACH
- BORE - OVERSIZE:
- +0,50 MM
- STROKE LENGTH METRIC:
- 45.60 MM
$124.95 -
WISECO Piston Kit - RT100 771M05300
WISECO
$124.95WISECO Piston Kit RT100 771M05300Pistons come without gasket kit9100797- SKU:
- 9100797
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- DISPLACEMENT:
- 101,00 CC
- PISTON MATERIAL:
- FORGED
- PRODUCT NAME:
- PISTON
- BORE SIZE METRIC:
- 53.00 MM
- PISTON MATERIAL:
- ALUMINUM ALLOY
- UNITS:
- EACH
- BORE - OVERSIZE:
- +1,00 MM
- BORE - OVERSIZE METRIC:
- +1.00 MM
- ENGINE TYPE:
- 2-STROKE
- RIDING STYLE:
- OFF-ROAD
- STROKE LENGTH METRIC:
- 45.60 MM
$124.95 -
WISECO Piston Kit - Standard - YZ 125/X 846M05400
WISECO
$174.95WISECO Piston Kit Standard YZ 125/X 846M05400Pistons come without gasket kit9100799- SKU:
- 9100799
- Availability:
- Ships Same Business Day
- Weight:
- 0.41 LBS
- BORE - OVERSIZE:
- STANDARD
- BORE - OVERSIZE METRIC:
- STANDARD
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PRODUCT NAME:
- PISTON
- UNITS:
- EACH
- BORE SIZE METRIC:
- 54.00 MM
- DISPLACEMENT:
- 125 CC
- ENGINE TYPE:
- 2-STROKE
- MODEL:
- GP STYLE
- PISTON MATERIAL:
- FORGED
- RIDING STYLE:
- OFF-ROAD
- STROKE LENGTH METRIC:
- 54.50 MM
$174.95 -
WISECO Piston Kit - Standard - YZ250F/WR250 4882M07700
WISECO
$186.95WISECO Piston Kit Standard YZ250F/WR250 4882M07700Pistons come without gasket kit9100808- SKU:
- 9100808
- Availability:
- Ships Same Business Day
- Weight:
- 0.58 LBS
- RIDING STYLE:
- OFF-ROAD
- BORE SIZE METRIC:
- 77.00 MM
- COMPRESSION RATIO IMPERIAL:
- 12.5:1
- DISPLACEMENT:
- 250 CC
- ENGINE TYPE:
- 4-STROKE
- PISTON MATERIAL:
- ALUMINUM ALLOY
- STROKE LENGTH METRIC:
- 53.60 MM
- UNITS:
- EACH
- BORE - OVERSIZE:
- STANDARD
- BORE - OVERSIZE METRIC:
- STANDARD
- PISTON MATERIAL:
- FORGED
- PRODUCT NAME:
- PISTON
$186.95 -
WISECO Piston Kit - Standard -YZ250F/WR250 4881M07700
WISECO
$266.27WISECO Piston Kit Standard -YZ250F/WR250 4881M07700Pistons come without gasket kit9100810- SKU:
- 9100810
- Availability:
- Ships Same Business Day
- Weight:
- 0.54 LBS
$266.27Qty in Cart: 0Quantity:Price:$266.27Subtotal: -
WISECO Piston - Honda - .50mm 338M07050
WISECO
$199.95WISECO Piston Honda .50mm 338M07050Forged 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...338M07050- SKU:
- 338M07050
- Availability:
- Ships Same Business Day
- Weight:
- 0.80 LBS
- BORE - OVERSIZE:
- +0,50 MM
- ENGINE TYPE:
- 2-STROKE
- PISTON MATERIAL:
- 4032 ALUMINUM ALLOY
- RIDING STYLE:
- OFF-ROAD
- STROKE LENGTH METRIC:
- 64.40 MM
- UNITS:
- KIT
- PRODUCT NAME:
- PISTON KIT
- BORE - OVERSIZE METRIC:
- +0.50 MM
- DISPLACEMENT:
- 248 CC
- RIDING STYLE:
- UTV
- BORE SIZE METRIC:
- 70.50 MM
- MODEL:
- FORGED SERIES
- PISTON DIAMETER METRIC:
- 70.45 MM
- SKIRT COATING:
- NON-COATED
$199.95 -
WISECO Piston - Honda - 1.0mm 339M05700
WISECO
$187.95WISECO Piston Honda 1.0mm 339M05700Forged 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...339M05700- SKU:
- 339M05700
- Availability:
- Ships Same Business Day
- Weight:
- 0.40 LBS
- BORE SIZE METRIC:
- 57.00 MM
- PRODUCT NAME:
- PISTON KIT
- BORE - OVERSIZE METRIC:
- +1.00 MM
- DISPLACEMENT:
- 123 CC
- ENGINE TYPE:
- 2-STROKE
- PISTON DIAMETER METRIC:
- 56.94 MM
- RIDING STYLE:
- OFF-ROAD
- SKIRT COATING:
- NON-COATED
- UNITS:
- KIT
- MODEL:
- FORGED SERIES
- BORE - OVERSIZE:
- +1,00 MM
- PISTON MATERIAL:
- 4032 ALUMINUM ALLOY
- STROKE LENGTH METRIC:
- 50.00 MM
$187.95 -
WOSSNER Top End Bearing - 16 mm x 21 mm x 19.5 mm N1016
WOSSNER
$16.95WOSSNER Top End Bearing 16 mm x 21 mm x 19.5 mm N1016Top end bearing9240453- SKU:
- 9240453
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- APPLICATION:
- CONNECTING ROD
- OUTSIDE DIAMETER METRIC:
- 21 MM
- LENGTH METRIC:
- 19.5 MM
- TYPE:
- TOP END
- UNITS:
- EACH
- RIDING STYLE:
- OFF-ROAD
- INSIDE DIAMETER METRIC:
- 16 MM
- PRODUCT NAME:
- BEARING
- RIDING STYLE:
- STREET
$16.95 -
WRENCH RABBIT Engine Kit - Honda WR101-177
WRENCH RABBIT
$725.95WRENCH RABBIT Engine Kit Honda WR101-177Convenient one-stop shop in a box; nearly all components required for a complete and professional rebuild, Vertex piston kit (standard compression piston, rings, pin and clips), Hot Rods heavy-duty crank (stock...9031305- SKU:
- 9031305
- Availability:
- Ships Same Business Day
- Weight:
- 10.80 LBS
- FEATURES:
- STANDARD COMPRESSION PISTON
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- ENGINE
- ENGINE TYPE:
- 4-STROKE
- MODEL:
- WRENCH RABBIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$725.95 -
WRENCH RABBIT Engine Kit - Honda WR101-178
WRENCH RABBIT
$725.95WRENCH RABBIT Engine Kit Honda WR101-178Convenient one-stop shop in a box; nearly all components required for a complete and professional rebuild, Vertex piston kit (standard compression piston, rings, pin and clips), Hot Rods heavy-duty crank (stock...9031306- SKU:
- 9031306
- Availability:
- Ships Same Business Day
- Weight:
- 9.15 LBS
- TYPE:
- ENGINE
- FEATURES:
- STANDARD COMPRESSION PISTON
- PRODUCT NAME:
- REBUILD KIT
- ENGINE TYPE:
- 4-STROKE
- MODEL:
- WRENCH RABBIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$725.95Qty in Cart: 0Quantity:Price:$725.95Subtotal: -
WRENCH RABBIT Engine Kit - Honda WR101-179
WRENCH RABBIT
$1,029.95WRENCH RABBIT Engine Kit Honda WR101-179Convenient one-stop shop in a box; nearly all components required for a complete and professional rebuild, Vertex piston kit (standard compression piston, rings, pin and clips), Hot Rods heavy-duty crank (stock...9031307- SKU:
- 9031307
- Availability:
- Ships Same Business Day
- Weight:
- 17.10 LBS
- TYPE:
- ENGINE
- ENGINE TYPE:
- 4-STROKE
- FEATURES:
- STANDARD COMPRESSION PISTON
- PRODUCT NAME:
- REBUILD KIT
- MODEL:
- WRENCH RABBIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$1,029.95 -
WRENCH RABBIT Engine Kit - Kawasaki WR101-175
WRENCH RABBIT
$1,012.95WRENCH RABBIT Engine Kit Kawasaki WR101-175Convenient one-stop shop in a box; nearly all components required for a complete and professional rebuild, Vertex piston kit (standard compression piston, rings, pin and clips), Hot Rods heavy-duty crank (stock...9031308- SKU:
- 9031308
- Availability:
- Ships Same Business Day
- Weight:
- 12.20 LBS
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- ENGINE
- FEATURES:
- STANDARD COMPRESSION PISTON
- RIDING STYLE:
- OFF-ROAD
- ENGINE TYPE:
- 4-STROKE
- MODEL:
- WRENCH RABBIT
- UNITS:
- KIT
$1,012.95 -
WRENCH RABBIT Engine Kit - Kawasaki WR101-174
WRENCH RABBIT
$1,012.95WRENCH RABBIT Engine Kit Kawasaki WR101-174Convenient one-stop shop in a box; nearly all components required for a complete and professional rebuild, Vertex piston kit (standard compression piston, rings, pin and clips), Hot Rods heavy-duty crank (stock...9031309- SKU:
- 9031309
- Availability:
- Ships Same Business Day
- Weight:
- 16.05 LBS
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- ENGINE
- ENGINE TYPE:
- 4-STROKE
- MODEL:
- WRENCH RABBIT
- RIDING STYLE:
- OFF-ROAD
- FEATURES:
- STANDARD COMPRESSION PISTON
- UNITS:
- KIT
$1,012.95 -
WRENCH RABBIT Engine Kit - Kawasaki WR101-170
WRENCH RABBIT
$659.95WRENCH RABBIT Engine Kit Kawasaki WR101-170Convenient one-stop shop in a box; nearly all components required for a complete and professional rebuild, Vertex piston kit (standard compression piston, rings, pin and clips), Hot Rods heavy-duty crank (stock...9031310- SKU:
- 9031310
- Availability:
- Ships Same Business Day
- Weight:
- 8.05 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- ENGINE TYPE:
- 2-STROKE
- MODEL:
- WRENCH RABBIT
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- ENGINE
- FEATURES:
- STANDARD COMPRESSION PISTON
$659.95 -
On Sale
WRENCH RABBIT Engine Kit - KTM WR101-171
WRENCH RABBIT
MSRP: $808.95Now: $536.22Was: $824.95WRENCH RABBIT Engine Kit KTM WR101-171Convenient one-stop shop in a box; nearly all components required for a complete and professional rebuild, Vertex piston kit (standard compression piston, rings, pin and clips), Hot Rods heavy-duty crank (stock...9031311- SKU:
- 9031311
- Availability:
- Ships Same Business Day
- Weight:
- 11.05 LBS
- PRODUCT NAME:
- REBUILD KIT
- ENGINE TYPE:
- 2-STROKE
- MODEL:
- WRENCH RABBIT
- TYPE:
- ENGINE
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- FEATURES:
- STANDARD COMPRESSION PISTON
MSRP: $808.95Now: $536.22Was: $824.95Qty in Cart: 0Quantity:Price:MSRP: $808.95Now: $536.22Was: $824.95Subtotal:
