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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- Quantity
- Price
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On Sale
HOT RODS Crankshaft Kit CBK0129
HOT RODS
MSRP: $679.95Now: $624.56Was: $703.95HOT RODS Crankshaft Kit CBK0129Assembly sold complete with Hot Rods connecting rod, Factory assembled and true to OEM specifications, Hot Rods cranks will meet or surpass the OEM in performance, Ready for installation, Crankshaft is completely...09210363- SKU:
- 09210363
- Availability:
- Ships Same Business Day
- Weight:
- 13.10 LBS
- UNITS:
- KIT
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- CRANKSHAFT KIT
- TYPE:
- OEM
MSRP: $679.95Now: $624.56Was: $703.95 -
On Sale
HOT RODS Crankshaft Kit CBK0133
HOT RODS
Now: $370.22Was: $411.95HOT RODS Crankshaft Kit CBK0133Assembly sold complete with Hot Rods connecting rod, Factory assembled and true to OEM specifications, Hot Rods cranks will meet or surpass the OEM in performance, Ready for installation, Crankshaft is completely...09210365- SKU:
- 09210365
- Availability:
- Ships Same Business Day
- Weight:
- 6.60 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- CRANKSHAFT KIT
- TYPE:
- STROKER
Now: $370.22Was: $411.95 -
On Sale
HOT RODS Crankshaft Kit CBK0134
HOT RODS
MSRP: $301.95Now: $277.16Was: $312.95HOT RODS Crankshaft Kit CBK0134Assembly sold complete with Hot Rods connecting rod, Factory assembled and true to OEM specifications, Hot Rods cranks will meet or surpass the OEM in performance, Ready for installation, Crankshaft is completely...09210366- SKU:
- 09210366
- Availability:
- Ships Same Business Day
- Weight:
- 6.07 LBS
- PRODUCT NAME:
- CRANKSHAFT KIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- TYPE:
- STROKER
MSRP: $301.95Now: $277.16Was: $312.95 -
On Sale
HOT RODS Crankshaft 4024
HOT RODS
MSRP: $387.95Now: $356.36Was: $401.95HOT RODS Crankshaft 4024Sold 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...09210234- SKU:
- 09210234
- Availability:
- Ships Same Business Day
- Weight:
- 6.80 LBS
- RIDING STYLE:
- OFF-ROAD
- DISPLACEMENT:
- 125 CC
- MATERIAL:
- 4140 STEEL
- UNITS:
- ASSEMBLY
- COLOR/FINISH:
- STEEL
- PRODUCT NAME:
- CRANKSHAFT ASSEMBLY
- FEATURES:
- STANDARD CRANKSHAFT
- MODEL:
- 2-CYCLE
- STROKE LENGTH METRIC:
- 54.50 MM
- TYPE:
- OEM STROKE
MSRP: $387.95Now: $356.36Was: $401.95 -
On Sale
HOT RODS Crankshaft 4025
HOT RODS
MSRP: $484.95Now: $445.46Was: $501.95HOT RODS Crankshaft 4025Sold 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...09210235- SKU:
- 09210235
- Availability:
- Ships Same Business Day
- Weight:
- 6.85 LBS
- DISPLACEMENT:
- 144 CC TO 150 CC
- PRODUCT NAME:
- CRANKSHAFT ASSEMBLY
- STROKE LENGTH METRIC:
- 58.30 MM
- COLOR/FINISH:
- STEEL
- FEATURES:
- STANDARD CRANKSHAFT
- RIDING STYLE:
- OFF-ROAD
- MATERIAL:
- 4140 STEEL
- UNITS:
- ASSEMBLY
- MODEL:
- 2-CYCLE
- TYPE:
- OEM STROKE
MSRP: $484.95Now: $445.46Was: $501.95 -
On Sale
HOT RODS Crankshaft 4029
HOT RODS
MSRP: $538.95Now: $494.96Was: $557.95HOT RODS Crankshaft 4029Sold 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...09210238- SKU:
- 09210238
- Availability:
- Ships Same Business Day
- Weight:
- 7.24 LBS
- COLOR/FINISH:
- STEEL
- MATERIAL:
- 4140 STEEL
- RIDING STYLE:
- OFF-ROAD
- STROKE LENGTH METRIC:
- 54.80 MM
- UNITS:
- ASSEMBLY
- FEATURES:
- STANDARD CRANKSHAFT
- TYPE:
- OEM STROKE
- DISPLACEMENT:
- 250 CC
- MODEL:
- 4-CYCLE
- PRODUCT NAME:
- CRANKSHAFT ASSEMBLY
MSRP: $538.95Now: $494.96Was: $557.95 -
On Sale
HOT RODS Crankshaft 4030
HOT RODS
MSRP: $387.95Now: $356.36Was: $401.95HOT RODS Crankshaft 4030Sold 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...09210239- SKU:
- 09210239
- Availability:
- Ships Same Business Day
- Weight:
- 13.33 LBS
- COLOR/FINISH:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- ASSEMBLY
- DISPLACEMENT:
- 500 CC
- MODEL:
- 2-CYCLE
- PRODUCT NAME:
- CRANKSHAFT ASSEMBLY
- STROKE LENGTH METRIC:
- 79.00 MM
- MATERIAL:
- 4140 STEEL
- TYPE:
- OEM STROKE
- FEATURES:
- STANDARD CRANKSHAFT
MSRP: $387.95Now: $356.36Was: $401.95 -
On Sale
HOT RODS Crankshaft 4046
HOT RODS
MSRP: $420.95Now: $386.06Was: $434.95HOT RODS Crankshaft 4046Sold 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...09210240- SKU:
- 09210240
- Availability:
- Ships Same Business Day
- Weight:
- 6.95 LBS
- DISPLACEMENT:
- 200 CC
- FEATURES:
- STANDARD CRANKSHAFT
- MODEL:
- 2-CYCLE
- TYPE:
- OEM STROKE
- MATERIAL:
- 4140 STEEL
- UNITS:
- ASSEMBLY
- PRODUCT NAME:
- CRANKSHAFT ASSEMBLY
- COLOR/FINISH:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- STROKE LENGTH METRIC:
- 59.90 MM
MSRP: $420.95Now: $386.06Was: $434.95Qty in Cart: 0Quantity:Price:MSRP: $420.95Now: $386.06Was: $434.95Subtotal: -
On Sale
HOT RODS Crankshaft 4096
HOT RODS
MSRP: $398.95Now: $366.26Was: $412.95HOT RODS Crankshaft 4096Sold 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...09210242- SKU:
- 09210242
- Availability:
- Ships Same Business Day
- Weight:
- 7.10 LBS
- MODEL:
- 4-CYCLE
- TYPE:
- OEM STROKE
- FEATURES:
- HEAVY DUTY CRANKSHAFT
- MATERIAL:
- 4140 STEEL
- UNITS:
- ASSEMBLY
- DISPLACEMENT:
- 250 CC
- PRODUCT NAME:
- CRANKSHAFT ASSEMBLY
- STROKE LENGTH METRIC:
- 53.60 MM
- COLOR/FINISH:
- STEEL
- RIDING STYLE:
- OFF-ROAD
MSRP: $398.95Now: $366.26Was: $412.95 -
On Sale
HOT RODS Crankshaft 4097
HOT RODS
MSRP: $387.95Now: $356.36Was: $401.95HOT RODS Crankshaft 4097Sold 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...09210243- SKU:
- 09210243
- Availability:
- Ships Same Business Day
- Weight:
- 7.45 LBS
- FEATURES:
- STANDARD CRANKSHAFT
- MODEL:
- 4-CYCLE
- TYPE:
- OEM STROKE
- DISPLACEMENT:
- 250 CC
- PRODUCT NAME:
- CRANKSHAFT ASSEMBLY
- STROKE LENGTH METRIC:
- 53.80 MM
- MATERIAL:
- 4140 STEEL
- UNITS:
- ASSEMBLY
- COLOR/FINISH:
- STEEL
- RIDING STYLE:
- OFF-ROAD
MSRP: $387.95Now: $356.36Was: $401.95 -
On Sale
HOT RODS Crankshaft Assembly 4058
HOT RODS
MSRP: $495.95Now: $455.36Was: $513.95HOT 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...09210026- SKU:
- 09210026
- 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: $513.95 -
On Sale
HOT RODS Crankshaft Assembly 4054
HOT RODS
MSRP: $344.95Now: $316.76Was: $356.95HOT 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...09210027- SKU:
- 09210027
- 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: $356.95 -
On Sale
HOT RODS Crankshaft Assembly 4041
HOT RODS
MSRP: $387.95Now: $356.36Was: $401.95HOT 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...09210016- SKU:
- 09210016
- 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: $401.95 -
On Sale
HOT RODS Crankshaft Assembly 4050
HOT RODS
MSRP: $420.95Now: $386.06Was: $434.95HOT 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...09210017- SKU:
- 09210017
- 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: $434.95 -
On Sale
HOT RODS Crankshaft 4081
HOT RODS
MSRP: $484.95Now: $445.46Was: $501.95HOT 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...09210136- SKU:
- 09210136
- 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: $501.95 -
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...09340369- SKU:
- 09340369
- 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...09340380- SKU:
- 09340380
- 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 - 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...09340392- SKU:
- 09340392
- 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,...09344221- SKU:
- 09344221
- 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...09344228- SKU:
- 09344228
- 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
