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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On Sale
HOT RODS Crankshaft Assembly 4058
HOT RODS
MSRP: $495.95Now: $455.36Was: $505.95HOT RODS Crankshaft Assembly 4058Sold complete with the original proven Hot Rods connecting rods, top-end bearings and crankshaft webs, Factory assembled and trued to OEM specifications; meet or surpass OEM in performance and durability, Complete and...9210026- SKU:
- 9210026
- Availability:
- Ships Same Business Day
- Weight:
- 9.04 LBS
- COLOR/FINISH:
- STEEL
- PRODUCT NAME:
- CRANKSHAFT ASSEMBLY
- RIDING STYLE:
- OFF-ROAD
- MATERIAL:
- 4140 STEEL
- UNITS:
- ASSEMBLY
- DISPLACEMENT:
- 250 CC
- FEATURES:
- STANDARD CRANKSHAFT
- MODEL:
- 2-CYCLE
- STROKE LENGTH METRIC:
- 72.00 MM
- TYPE:
- OEM STROKE
MSRP: $495.95Now: $455.36Was: $505.95 -
On Sale
HOT RODS Crankshaft Assembly 4054
HOT RODS
MSRP: $344.95Now: $316.76Was: $351.95HOT RODS Crankshaft Assembly 4054Sold complete with the original proven Hot Rods connecting rods, top-end bearings and crankshaft webs, Factory assembled and trued to OEM specifications; meet or surpass OEM in performance and durability, Complete and...9210027- SKU:
- 9210027
- Availability:
- Ships Same Business Day
- Weight:
- 6.22 LBS
- COLOR/FINISH:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- STROKE LENGTH METRIC:
- 54.60 MM
- DISPLACEMENT:
- 125 CC
- MATERIAL:
- 4140 STEEL
- UNITS:
- ASSEMBLY
- PRODUCT NAME:
- CRANKSHAFT ASSEMBLY
- FEATURES:
- STANDARD CRANKSHAFT
- MODEL:
- 2-CYCLE
- TYPE:
- OEM STROKE
MSRP: $344.95Now: $316.76Was: $351.95 -
On Sale
HOT RODS Crankshaft Assembly 4041
HOT RODS
MSRP: $387.95Now: $356.36Was: $395.95HOT RODS Crankshaft Assembly 4041Sold complete with the original proven Hot Rods connecting rods, top-end bearings and crankshaft webs, Factory assembled and trued to OEM specifications; meet or surpass OEM in performance and durability, Complete and...9210016- SKU:
- 9210016
- Availability:
- Ships Same Business Day
- Weight:
- 6.55 LBS
- DISPLACEMENT:
- 125 CC
- PRODUCT NAME:
- CRANKSHAFT ASSEMBLY
- FEATURES:
- STANDARD CRANKSHAFT
- STROKE LENGTH METRIC:
- 54.60 MM
- TYPE:
- OEM STROKE
- MODEL:
- 2-CYCLE
- COLOR/FINISH:
- STEEL
- MATERIAL:
- 4140 STEEL
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- ASSEMBLY
MSRP: $387.95Now: $356.36Was: $395.95 -
On Sale
HOT RODS Crankshaft Assembly 4050
HOT RODS
MSRP: $420.95Now: $386.06Was: $428.95HOT RODS Crankshaft Assembly 4050Sold complete with the original proven Hot Rods connecting rods, top-end bearings and crankshaft webs, Factory assembled and trued to OEM specifications; meet or surpass OEM in performance and durability, Complete and...9210017- SKU:
- 9210017
- Availability:
- Ships Same Business Day
- Weight:
- 8.63 LBS
- MODEL:
- 4-CYCLE
- PRODUCT NAME:
- CRANKSHAFT ASSEMBLY
- DISPLACEMENT:
- 450 CC
- FEATURES:
- HEAVY DUTY CRANKSHAFT
- MATERIAL:
- 4140 STEEL
- STROKE LENGTH METRIC:
- 63.40 MM
- TYPE:
- OEM STROKE
- COLOR/FINISH:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- ASSEMBLY
MSRP: $420.95Now: $386.06Was: $428.95 -
On Sale
HOT RODS Crankshaft 4081
HOT RODS
MSRP: $484.95Now: $445.46Was: $494.95HOT RODS Crankshaft 4081Sold complete with the original proven Hot Rods connecting rods, top-end bearings and crankshaft webs, Factory assembled and trued to OEM specifications; meet or surpass OEM in performance and durability, Complete and ready for...9210136- SKU:
- 9210136
- Availability:
- Ships Same Business Day
- Weight:
- 7.26 LBS
- PRODUCT NAME:
- CRANKSHAFT ASSEMBLY
- COLOR/FINISH:
- STEEL
- FEATURES:
- STANDARD CRANKSHAFT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- OEM STROKE
- MODEL:
- 4-CYCLE
- DISPLACEMENT:
- 250 CC
- MATERIAL:
- 4140 STEEL
- STROKE LENGTH METRIC:
- 53.60 MM
- UNITS:
- ASSEMBLY
MSRP: $484.95Now: $445.46Was: $494.95 -
COMETIC Top End Gasket Kit - DT200 C7142
COMETIC
$32.95COMETIC Top End Gasket Kit DT200 C7142Top end gasket kits include correct base, head gasket and cylinder O-rings as well as other top end specific O-rings or seals needed for R&R of top end, MLS head gaskets promote an even torque load across the gasket...9340369- SKU:
- 9340369
- Availability:
- Ships Same Business Day
- Weight:
- 0.09 LBS
- PRODUCT NAME:
- GASKET KIT
- BORE SIZE METRIC:
- 68.00 MM
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- TYPE:
- TOP END
$32.95 -
COMETIC Top End Gasket Kit - CR85 C7315
COMETIC
$34.95COMETIC Top End Gasket Kit CR85 C7315Top end gasket kits include correct base, head gasket and cylinder O-rings as well as other top end specific O-rings or seals needed for R&R of top end, MLS head gaskets promote an even torque load across the gasket...9340380- SKU:
- 9340380
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- PRODUCT NAME:
- GASKET KIT
- THICKNESS METRIC:
- 0.31 MM
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- THICKNESS IMPERIAL:
- 0,012'
- TYPE:
- TOP END
- BORE SIZE METRIC:
- 52.00 MM
$34.95 -
COMETIC Top End Gasket Kit - KTM125 C7386
COMETIC
$47.95COMETIC Top End Gasket Kit KTM125 C7386Top end gasket kits include correct base, head gasket and cylinder O-rings as well as other top end specific O-rings or seals needed for R&R of top end, MLS head gaskets promote an even torque load across the gasket...9340382- SKU:
- 9340382
- Availability:
- Ships Same Business Day
- Weight:
- 0.07 LBS
- BORE SIZE METRIC:
- 54.00 MM
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TOP END
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET KIT
$47.95Qty in Cart: 0Quantity:Price:$47.95Subtotal: -
COMETIC Top End Gasket Kit - YZ426F C7689
COMETIC
$47.95COMETIC Top End Gasket Kit YZ426F C7689Top end gasket kits include correct base, head gasket and cylinder O-rings as well as other top end specific O-rings or seals needed for R&R of top end, MLS head gaskets promote an even torque load across the gasket...9340392- SKU:
- 9340392
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- BORE SIZE METRIC:
- 95.00 MM
- PRODUCT NAME:
- GASKET KIT
- UNITS:
- KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TOP END
$47.95 -
COMETIC Bottom End Gasket Set - Honda C7010BE
COMETIC
$82.95COMETIC Bottom End Gasket Set Honda C7010BEBottom end gasket kits include correct oil seals, O-rings, drain plug washers and water pump cover gaskets as needed, Materials will vary depending on what is correct and engineered for specified application,...9344221- SKU:
- 9344221
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- BORE SIZE METRIC:
- 58.00 MM
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- MODEL:
- HI-PERFORMANCE
- PRODUCT NAME:
- GASKET KIT
- TYPE:
- BOTTOM END
$82.95 -
COMETIC Exhaust Gasket C7087EX
COMETIC
$10.95COMETIC Exhaust Gasket C7087EXGasket material and construction will vary by application to ensure longevity with leak free performance under all conditions, 4-stroke applications utilize a double-sided Viton® rubber-coated stainless steel gasket...9344228- SKU:
- 9344228
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- ENGINE TYPE:
- 4-STROKE
- RIDING STYLE:
- OFF-ROAD
- MODEL:
- HI-PERFORMANCE
- TYPE:
- EXHAUST
- UNITS:
- SET
- PRODUCT NAME:
- GASKET
$10.95 -
COMETIC Bottom End Gasket Set - Honda C7116BE
COMETIC
$82.95COMETIC Bottom End Gasket Set Honda C7116BEBottom end gasket kits include correct oil seals, O-rings, drain plug washers and water pump cover gaskets as needed, Materials will vary depending on what is correct and engineered for specified application,...9344234- SKU:
- 9344234
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- MODEL:
- HI-PERFORMANCE
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET KIT
- TYPE:
- BOTTOM END
- BORE SIZE METRIC:
- 68.50 MM
- RIDING STYLE:
- OFF-ROAD
$82.95 -
COMETIC Exhaust Gasket - Honda C7126EX
COMETIC
$21.95COMETIC Exhaust Gasket Honda C7126EXGasket material and construction will vary by application to ensure longevity with leak free performance under all conditions, 4-stroke applications utilize a double-sided Viton® rubber-coated stainless steel gasket...9344236- SKU:
- 9344236
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- BORE SIZE METRIC:
- 51.00 MM
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- GASKET
- MODEL:
- HI-PERFORMANCE
- TYPE:
- EXHAUST
- UNITS:
- SET
$21.95 -
COMETIC Top End Gasket Set - Honda C7191
COMETIC
$54.95COMETIC Top End Gasket Set Honda C7191Top end gasket kits include correct base, head gasket and cylinder O-rings as well as other top end specific O-rings or seals needed for R&R of top end, MLS head gaskets promote an even torque load across the gasket...9344251- SKU:
- 9344251
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- BORE SIZE METRIC:
- 66.50 MM
- THICKNESS IMPERIAL:
- 0,012'
- UNITS:
- KIT
- THICKNESS METRIC:
- 0.31 MM
- PRODUCT NAME:
- GASKET KIT
- TYPE:
- TOP END
- RIDING STYLE:
- OFF-ROAD
$54.95 -
COMETIC Bottom End Gasket Set - Honda C7191BE
COMETIC
$82.95COMETIC Bottom End Gasket Set Honda C7191BEBottom end gasket kits include correct oil seals, O-rings, drain plug washers and water pump cover gaskets as needed, Materials will vary depending on what is correct and engineered for specified application,...9344252- SKU:
- 9344252
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- BORE SIZE METRIC:
- 68.50 MM
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- BOTTOM END
- BORE SIZE METRIC:
- 66.50 MM
- MODEL:
- HI-PERFORMANCE
- UNITS:
- KIT
$82.95 -
COMETIC Stator Gasket - Suzuki EC1019032AFM
COMETIC
$13.95COMETIC Stator Gasket Suzuki EC1019032AFMStator cover gaskets are made from an AFM Material which is a chemically blown, compounded nitrile synthetic rubber bonded to an aluminum core, Save service time as AFM will not stick to the engine case making...9344363- SKU:
- 9344363
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- STATOR COVER
- MODEL:
- HI-PERFORMANCE
- MATERIAL:
- AFM (ALUMINUM FOAM MATERIAL)
- PRODUCT NAME:
- GASKET
- UNITS:
- EACH
$13.95 -
HOT CAMS Cam Chain HC92RH2015106
HOT CAMS
$60.95HOT CAMS Cam Chain HC92RH2015106Silent chain, Exclusive heat-treated links create excellent friction and impact resistance, Engineered to exceed OEM specifications and tolerances9250762- SKU:
- 9250762
- Availability:
- Ships Same Business Day
- Weight:
- 0.55 LBS
- BASE FINISH:
- RAW
- CHAIN SIZE:
- 92RH2015
- COLOR/FINISH:
- RAW
- UNITS:
- EACH
- MATERIAL:
- STEEL
- MODEL:
- SILENT
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- CHAIN
- TYPE:
- CAM
$60.95 -
HOT CAMS Cam Chain HC96RH2015108
HOT CAMS
$60.95HOT CAMS Cam Chain HC96RH2015108Silent chain, Exclusive heat-treated links create excellent friction and impact resistance, Engineered to exceed OEM specifications and tolerances9250763- SKU:
- 9250763
- Availability:
- Ships Same Business Day
- Weight:
- 0.55 LBS
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- CHAIN SIZE:
- 96RH2015
- PRODUCT NAME:
- CHAIN
- BASE FINISH:
- RAW
- COLOR/FINISH:
- RAW
- UNITS:
- EACH
- MODEL:
- SILENT
- TYPE:
- CAM
$60.95 -
HOT CAMS Cam Chain HC98XRH2010122
HOT CAMS
$60.95HOT CAMS Cam Chain HC98XRH2010122Silent chain, Exclusive heat-treated links create excellent friction and impact resistance, Engineered to exceed OEM specifications and tolerances9250764- SKU:
- 9250764
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
- RIDING STYLE:
- OFF-ROAD
- BASE FINISH:
- RAW
- COLOR/FINISH:
- RAW
- UNITS:
- EACH
- MATERIAL:
- STEEL
- CHAIN SIZE:
- 98XRH2010
- MODEL:
- SILENT
- PRODUCT NAME:
- CHAIN
- TYPE:
- CAM
$60.95 -
HOT CAMS Camshaft 2266-1IN
HOT CAMS
$268.95HOT CAMS Camshaft 2266-1INHigh-performance racing camshafts, Stage 1 and Stage 2 performance camshafts are drop-in cams that are designed to be used with stock valve springs, In most applications, Stage 1 cams deliver more torque and Stage 2 cams provide...9250866- SKU:
- 9250866
- Availability:
- Ships Same Business Day
- Weight:
- 0.90 LBS
- INTAKE DURATION IMPERIAL:
- 235.5°
- INTAKE LIFT METRIC:
- 9.60 MM
- APPLICATION:
- INTAKE
- UNITS:
- EACH
- PRODUCT NAME:
- CAMSHAFT
- RIDING STYLE:
- OFF-ROAD
$268.95
