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 - 520SX/EXC 4732M09500
WISECO
$284.95WISECO Piston Kit Standard 520SX/EXC 4732M09500Pistons come without gasket kit9100789- SKU:
- 9100789
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
- STROKE LENGTH METRIC:
- 72.00 MM
- BORE - OVERSIZE METRIC:
- STANDARD
- PISTON MATERIAL:
- FORGED
- PRODUCT NAME:
- PISTON
- RIDING STYLE:
- OFF-ROAD
- BORE SIZE METRIC:
- 95.00 MM
- BORE - OVERSIZE:
- STANDARD
- COMPRESSION RATIO IMPERIAL:
- 12.5:1
- DISPLACEMENT:
- 510 CC
- ENGINE TYPE:
- 4-STROKE
- PISTON MATERIAL:
- ALUMINUM ALLOY
- RIDING STYLE:
- ATV
- UNITS:
- EACH
$284.95Qty in Cart: 0Quantity:Price:$284.95Subtotal: -
WISECO Piston Kit - 520SX/EXC 4732M09700
WISECO
$284.95WISECO Piston Kit 520SX/EXC 4732M09700Pistons come without gasket kit9100790- SKU:
- 9100790
- Availability:
- Ships Same Business Day
- Weight:
- 1.05 LBS
- STROKE LENGTH METRIC:
- 72.00 MM
- BORE - OVERSIZE METRIC:
- +2.00 MM
- DISPLACEMENT:
- 510 CC
- ENGINE TYPE:
- 4-STROKE
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- PISTON MATERIAL:
- FORGED
- RIDING STYLE:
- OFF-ROAD
- BORE - OVERSIZE:
- +2,00 MM
- BORE SIZE METRIC:
- 97.00 MM
- COMPRESSION RATIO IMPERIAL:
- 12.5:1
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PRODUCT NAME:
- PISTON
$284.95 -
WISECO Piston Kit - Standard - RMZ450 4869M09550
WISECO
$239.95WISECO Piston Kit Standard RMZ450 4869M09550Pistons come without gasket kit9100791- SKU:
- 9100791
- Availability:
- Ships Same Business Day
- Weight:
- 0.95 LBS
- BORE SIZE METRIC:
- 95.50 MM
- DISPLACEMENT:
- 450 CC
- COMPRESSION RATIO IMPERIAL:
- 12.0:1
- PISTON MATERIAL:
- FORGED
- RIDING STYLE:
- OFF-ROAD
- STROKE LENGTH METRIC:
- 62.80 MM
- ENGINE TYPE:
- 4-STROKE
- PISTON MATERIAL:
- ALUMINUM ALLOY
- UNITS:
- EACH
- BORE - OVERSIZE:
- STANDARD
- BORE - OVERSIZE METRIC:
- STANDARD
- PRODUCT NAME:
- PISTON
- SKIRT COATING:
- MOLY COATED
$239.95 -
WISECO Piston Kit - Standard - RMZ450 4870M09550
WISECO
$269.95WISECO Piston Kit Standard RMZ450 4870M09550Pistons come without gasket kit9100793- SKU:
- 9100793
- Availability:
- Ships Same Business Day
- Weight:
- 0.91 LBS
- ENGINE TYPE:
- 4-STROKE
- PISTON MATERIAL:
- ALUMINUM ALLOY
- STROKE LENGTH METRIC:
- 62.80 MM
- UNITS:
- EACH
- BORE SIZE METRIC:
- 95.50 MM
- DISPLACEMENT:
- 450 CC
- SKIRT COATING:
- MOLY COATED
- BORE - OVERSIZE:
- STANDARD
- BORE - OVERSIZE METRIC:
- STANDARD
- PISTON MATERIAL:
- FORGED
- PRODUCT NAME:
- PISTON
- RIDING STYLE:
- OFF-ROAD
- COMPRESSION RATIO IMPERIAL:
- 13.0:1
$269.95 -
WISECO Piston Kit - YZ 125/X 846M05600
WISECO
$184.95WISECO Piston Kit YZ 125/X 846M05600Pistons come without gasket kit9100800- SKU:
- 9100800
- Availability:
- Ships Same Business Day
- Weight:
- 0.47 LBS
- BORE SIZE METRIC:
- 56.00 MM
- PISTON MATERIAL:
- ALUMINUM ALLOY
- UNITS:
- EACH
- BORE - OVERSIZE METRIC:
- +2.00 MM
- ENGINE TYPE:
- 2-STROKE
- MODEL:
- GP STYLE
- BORE - OVERSIZE:
- +2,00 MM
- PISTON MATERIAL:
- FORGED
- PRODUCT NAME:
- PISTON
- RIDING STYLE:
- OFF-ROAD
- DISPLACEMENT:
- 134 CC
- STROKE LENGTH METRIC:
- 54.50 MM
$184.95 -
WISECO Piston Kit - Standard - WR200 818M06680
WISECO
$186.31WISECO Piston Kit Standard WR200 818M06680Pistons come without gasket kit9100801- SKU:
- 9100801
- Availability:
- Ships Same Business Day
- Weight:
- 0.69 LBS
$186.31Qty in Cart: 0Quantity:Price:$186.31Subtotal: -
WISECO Piston Kit - Standard - YZ250F 4858M07700
WISECO
$264.95WISECO Piston Kit Standard YZ250F 4858M07700Pistons come without gasket kit9100806- SKU:
- 9100806
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
- ENGINE TYPE:
- 4-STROKE
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
- BORE - OVERSIZE:
- STANDARD
- BORE - OVERSIZE METRIC:
- STANDARD
- COMPRESSION RATIO IMPERIAL:
- 13.5:1
- DISPLACEMENT:
- 263 CC
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PRODUCT NAME:
- PISTON
- STROKE LENGTH METRIC:
- 53.60 MM
- BORE SIZE METRIC:
- 77.00 MM
- PISTON MATERIAL:
- FORGED
$264.95 -
WISECO Piston Kit 758M08000
WISECO
$174.41WISECO Piston Kit 758M08000All Wiseco pistons are forged from aerospace aluminum alloys on Wiseco’s state-of-the-art forging presses, Built on a legacy of championships for over 60 years by American craftsmen, Wiseco pistons have the latest dyno-tested...9101695- SKU:
- 9101695
- Availability:
- Ships Same Business Day
- Weight:
- 1.15 LBS
$174.41Qty in Cart: 0Quantity:Price:$174.41Subtotal: -
On Sale
WISECO Piston Kit - Standard 849M06640
WISECO
MSRP: $223.54Now: $152.57Was: $234.72WISECO Piston Kit Standard 849M06640Pistons come without gasket kit9101698- SKU:
- 9101698
- Availability:
- Ships Same Business Day
- Weight:
- 0.74 LBS
- STROKE LENGTH METRIC:
- 72.00 MM
- BORE SIZE METRIC:
- 66.40 MM
- PISTON MATERIAL:
- FORGED
- RIDING STYLE:
- OFF-ROAD
- ENGINE TYPE:
- 2-STROKE
- PISTON MATERIAL:
- ALUMINUM ALLOY
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- BORE - OVERSIZE:
- STANDARD
- BORE - OVERSIZE METRIC:
- STANDARD
- DISPLACEMENT:
- 249 CC
- PRODUCT NAME:
- PISTON
MSRP: $223.54Now: $152.57Was: $234.72Qty in Cart: 0Quantity:Price:MSRP: $223.54Now: $152.57Was: $234.72Subtotal: -
On Sale
WISECO Piston Kit with Gaskets PK1213
WISECO
MSRP: $262.73Now: $174.19Was: $267.98WISECO Piston Kit with Gaskets PK1213Most 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...9030669- SKU:
- 9030669
- Availability:
- Ships Same Business Day
- Weight:
- 1.20 LBS
- BORE - OVERSIZE:
- +1,10 MM
- BORE SIZE METRIC:
- 67.50 MM
- ENGINE TYPE:
- 2-STROKE
- MODEL:
- PRO-LITE
- PISTON MATERIAL:
- 4032 ALUMINUM ALLOY
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TOP END
- DISPLACEMENT:
- 249 CC
- PRODUCT NAME:
- REBUILD KIT
- STROKE LENGTH METRIC:
- 72.00 MM
- BORE - OVERSIZE METRIC:
- +1.10 MM
- SKIRT COATING:
- ARMORGLIDE®
- UNITS:
- KIT
- PISTON DIAMETER METRIC:
- 67.44 MM
MSRP: $262.73Now: $174.19Was: $267.98 -
WISECO Piston Kit - KX250 - 1992-2001 617M06850
WISECO
$224.95WISECO Piston Kit KX250 1992-2001 617M06850Pistons come without gasket kit9101217- SKU:
- 9101217
- Availability:
- Ships Same Business Day
- Weight:
- 0.70 LBS
- BORE SIZE METRIC:
- 68.50 MM
- PRODUCT NAME:
- PISTON
- DISPLACEMENT:
- 249 CC
- ENGINE TYPE:
- 2-STROKE
- PISTON MATERIAL:
- ALUMINUM ALLOY
- UNITS:
- EACH
- BORE - OVERSIZE METRIC:
- +2.10 MM
- PISTON MATERIAL:
- FORGED
- RIDING STYLE:
- OFF-ROAD
- BORE - OVERSIZE:
- +2,10 MM
- STROKE LENGTH METRIC:
- 72.00 MM
$224.95 -
WISECO Piston Kit with Gaskets PK1345
WISECO
$203.89WISECO Piston Kit with Gaskets PK1345Most 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...9030672- SKU:
- 9030672
- Availability:
- Ships Same Business Day
- Weight:
- 0.85 LBS
$203.89Qty in Cart: 0Quantity:Price:$203.89Subtotal: -
WISECO Piston Kit - RM125 - 1988-1999 641M05600
WISECO
$179.95WISECO Piston Kit RM125 1988-1999 641M05600Pistons come without gasket kit9101219- SKU:
- 9101219
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
- BORE SIZE METRIC:
- 56.00 MM
- PISTON MATERIAL:
- ALUMINUM ALLOY
- UNITS:
- EACH
- BORE - OVERSIZE METRIC:
- +2.00 MM
- ENGINE TYPE:
- 2-STROKE
- MODEL:
- PRO-LITE
- BORE - OVERSIZE:
- +2,00 MM
- DISPLACEMENT:
- 123 CC
- PISTON MATERIAL:
- FORGED
- PRODUCT NAME:
- PISTON
- RIDING STYLE:
- OFF-ROAD
- STROKE LENGTH METRIC:
- 54.00 MM
$179.95 -
WISECO Piston Kit with Gaskets PK1380
WISECO
$250.53WISECO Piston Kit with Gaskets PK1380Most 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...9030679- SKU:
- 9030679
- Availability:
- Ships Same Business Day
- Weight:
- 1.50 LBS
$250.53Qty in Cart: 0Quantity:Price:$250.53Subtotal: -
WISECO Piston Kit - CR80 - 1986-2002 643M04900
WISECO
$144.95WISECO Piston Kit CR80 1986-2002 643M04900Pistons come without gasket kit9101221- SKU:
- 9101221
- Availability:
- Ships Same Business Day
- Weight:
- 0.33 LBS
- DISPLACEMENT:
- 82,9 CC
- UNITS:
- EACH
- BORE - OVERSIZE:
- +2,00 MM
- PISTON MATERIAL:
- ALUMINUM
- PISTON MATERIAL:
- FORGED
- RIDING STYLE:
- OFF-ROAD
- BORE - OVERSIZE METRIC:
- +2.00 MM
- ENGINE TYPE:
- 2-STROKE
- BORE SIZE METRIC:
- 49.00 MM
- PRODUCT NAME:
- PISTON KIT
- STROKE LENGTH METRIC:
- 47.80 MM
$144.95Qty in Cart: 0Quantity:Price:$144.95Subtotal: -
WISECO Piston Kit - RM80 - 1991-2001 645M04900
WISECO
$144.95WISECO Piston Kit RM80 1991-2001 645M04900Pistons come without gasket kit9101222- SKU:
- 9101222
- Availability:
- Ships Same Business Day
- Weight:
- 0.40 LBS
- BORE - OVERSIZE:
- +1,50 MM
- PISTON MATERIAL:
- ALUMINUM ALLOY
- STROKE LENGTH METRIC:
- 46.80 MM
- UNITS:
- EACH
- BORE SIZE METRIC:
- 49.00 MM
- DISPLACEMENT:
- 82 CC
- ENGINE TYPE:
- 2-STROKE
- MODEL:
- PRO-LITE
- PISTON MATERIAL:
- FORGED
- PRODUCT NAME:
- PISTON
- RIDING STYLE:
- OFF-ROAD
- BORE - OVERSIZE METRIC:
- +1.50 MM
$144.95 -
WISECO Piston Kit - RM80 - 1991-2001 645M04950
WISECO
$145.18WISECO Piston Kit RM80 1991-2001 645M04950Pistons come without gasket kit9101223- SKU:
- 9101223
- Availability:
- Ships Same Business Day
- Weight:
- 0.40 LBS
$145.18Qty in Cart: 0Quantity:Price:$145.18Subtotal: -
WISECO Piston Kit - YZ125 - 1994-1996 647M05600
WISECO
$179.95WISECO Piston Kit YZ125 1994-1996 647M05600Pistons come without gasket kit9101224- SKU:
- 9101224
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
- BORE - OVERSIZE METRIC:
- +2.00 MM
- DISPLACEMENT:
- 124 CC
- ENGINE TYPE:
- 2-STROKE
- MODEL:
- PRO-LITE
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- BORE - OVERSIZE:
- +2,00 MM
- BORE SIZE METRIC:
- 56.00 MM
- PISTON MATERIAL:
- ALUMINUM ALLOY
- PRODUCT NAME:
- PISTON
- PISTON MATERIAL:
- FORGED
- STROKE LENGTH METRIC:
- 54.50 MM
$179.95Qty in Cart: 0Quantity:Price:$179.95Subtotal: -
WISECO Piston Kit - PW80 649M04900
WISECO
$145.18WISECO Piston Kit PW80 649M04900Pistons come without gasket kit9101225- SKU:
- 9101225
- Availability:
- Ships Same Business Day
- Weight:
- 0.40 LBS
$145.18Qty in Cart: 0Quantity:Price:$145.18Subtotal: -
WISECO Piston Kit with Gaskets PK1410
WISECO
$264.95WISECO Piston Kit with Gaskets PK1410Forged 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...9030685- SKU:
- 9030685
- Availability:
- Ships Same Business Day
- Weight:
- 0.95 LBS
- COOLING SYSTEM:
- AIR COOLED
- RIDING STYLE:
- OFF-ROAD
- STROKE LENGTH METRIC:
- 54.50 MM
- BORE SIZE METRIC:
- 54.00 MM
- PISTON MATERIAL:
- ALUMINUM
- DISPLACEMENT:
- 125 CC
- MODEL:
- RACER'S CHOICE
- TYPE:
- TOP END
- UNITS:
- EACH
- BORE - OVERSIZE:
- STANDARD
- BORE - OVERSIZE METRIC:
- STANDARD
- PISTON MATERIAL:
- FORGED
- PRODUCT NAME:
- REBUILD KIT
$264.95
