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
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- Quantity
- Price
- Subtotal
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On Sale
HOT RODS Crankshaft - Stroker 4197
HOT RODS
MSRP: $359.95Now: $323.96Was: $359.95HOT RODS Crankshaft Stroker 4197Hot Rods has developed six long-stroke applications for ATVs, Special pistons for TRX400EX, KFX/LTZ 400, Banshee, Warrior and Raptor make these installations simple by avoiding machine work and parts typically required for...9210246- SKU:
- 9210246
- Availability:
- Ships Same Business Day
- Weight:
- 7.50 LBS
- PRODUCT NAME:
- CRANKSHAFT ASSEMBLY
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- STROKER
- DISPLACEMENT:
- 259 CC
- MODEL:
- 4-CYCLE
- STROKE LENGTH:
- 55,80 MM
- STROKE LENGTH METRIC:
- 55.80 MM
- COLOR/FINISH:
- STEEL
- FEATURES:
- HEAVY DUTY CRANKSHAFT
- MATERIAL:
- 4140 STEEL
- UNITS:
- ASSEMBLY
MSRP: $359.95Now: $323.96Was: $359.95 -
On Sale
HOT RODS Crankshaft - Stroker 4139
HOT RODS
MSRP: $509.95Now: $458.96Was: $509.95Hot Rods has developed six long-stroke applications for ATVs, Special pistons for TRX400EX, KFX/LTZ 400, Banshee, Warrior and Raptor make these installations simple by avoiding machine work and parts typically required for long-stroke engines9210487- SKU:
- 9210487
- Weight:
- 112.00 LBS
MSRP: $509.95Now: $458.96Was: $509.95Qty in Cart: 0Quantity:Price:MSRP: $509.95Now: $458.96Was: $509.95Subtotal: -
On Sale
HOT RODS Crankshaft Kit CBK0187
HOT RODS
MSRP: $506.95Now: $465.26Was: $516.95HOT RODS Crankshaft Kit CBK0187Assembly 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...9210504- SKU:
- 9210504
- Availability:
- Ships Same Business Day
- Weight:
- 6.75 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- CRANKSHAFT KIT
- TYPE:
- OEM
MSRP: $506.95Now: $465.26Was: $516.95 -
On Sale
HOT RODS Crankshaft Kit CBK0188
HOT RODS
MSRP: $387.95Now: $356.36Was: $395.95HOT RODS Crankshaft Kit CBK0188Assembly 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...9210505- SKU:
- 9210505
- Availability:
- Ships Same Business Day
- Weight:
- 4.60 LBS
- UNITS:
- KIT
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- CRANKSHAFT KIT
- TYPE:
- OEM
MSRP: $387.95Now: $356.36Was: $395.95 -
On Sale
HOT RODS Crankshaft Kit CBK0191
HOT RODS
MSRP: $625.95Now: $574.16Was: $637.95HOT RODS Crankshaft Kit CBK0191Assembly 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...9210521- SKU:
- 9210521
- Availability:
- Ships Same Business Day
- Weight:
- 13.40 LBS
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- CRANKSHAFT KIT
- TYPE:
- OEM
- UNITS:
- KIT
MSRP: $625.95Now: $574.16Was: $637.95 -
On Sale
HOT RODS Crankshaft Assembly 4053
HOT RODS
MSRP: $229.95Now: $206.96Was: $229.95HOT RODS Crankshaft Assembly 4053Sold 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...9210021- SKU:
- 9210021
- Availability:
- Ships Same Business Day
- Weight:
- 6.22 LBS
- DISPLACEMENT:
- 125 CC
- FEATURES:
- STANDARD CRANKSHAFT
- TYPE:
- OEM STROKE
- MODEL:
- 2-CYCLE
- PRODUCT NAME:
- CRANKSHAFT ASSEMBLY
- MATERIAL:
- 4140 STEEL
- UNITS:
- ASSEMBLY
- COLOR/FINISH:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- STROKE LENGTH METRIC:
- 54.60 MM
MSRP: $229.95Now: $206.96Was: $229.95 -
On Sale
HOT RODS Crankshaft Assembly 4055
HOT RODS
MSRP: $247.95Now: $227.66Was: $252.95HOT RODS Crankshaft Assembly 4055Sold 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...9210023- SKU:
- 9210023
- Availability:
- Ships Same Business Day
- Weight:
- 6.36 LBS
- DISPLACEMENT:
- 125 CC
- PRODUCT NAME:
- CRANKSHAFT ASSEMBLY
- MODEL:
- 2-CYCLE
- COLOR/FINISH:
- STEEL
- FEATURES:
- STANDARD CRANKSHAFT
- RIDING STYLE:
- OFF-ROAD
- STROKE LENGTH METRIC:
- 54.60 MM
- TYPE:
- OEM STROKE
- MATERIAL:
- 4140 STEEL
- UNITS:
- ASSEMBLY
MSRP: $247.95Now: $227.66Was: $252.95Qty in Cart: 0Quantity:Price:MSRP: $247.95Now: $227.66Was: $252.95Subtotal: -
On Sale
HOT RODS Crankshaft Assembly - Stroker 4116
HOT RODS
MSRP: $234.95Now: $215.96Was: $239.95HOT RODS Crankshaft Assembly Stroker 4116Hot Rods has developed six long-stroke applications for ATVs, Special pistons for TRX400EX, KFX/LTZ 400, Banshee, Warrior and Raptor make these installations simple by avoiding machine work and parts typically...9210025- SKU:
- 9210025
- Availability:
- Ships Same Business Day
- Weight:
- 4.60 LBS
- PRODUCT NAME:
- CRANKSHAFT ASSEMBLY
- STROKE LENGTH:
- 47,80 MM
- DISPLACEMENT:
- 85 CC TO 100 CC
- UNITS:
- ASSEMBLY
- COLOR/FINISH:
- STEEL
- FEATURES:
- STANDARD CRANKSHAFT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- STROKER
- MATERIAL:
- 4140 STEEL
- MODEL:
- 2-CYCLE
- STROKE LENGTH METRIC:
- 47.80 MM
MSRP: $234.95Now: $215.96Was: $239.95 -
On Sale
HOT RODS Crankshaft 4061
HOT RODS
MSRP: $733.95Now: $674.06Was: $748.95HOT RODS Crankshaft 4061Sold 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...9210037- SKU:
- 9210037
- Availability:
- Ships Same Business Day
- Weight:
- 21.89 LBS
- FEATURES:
- STANDARD CRANKSHAFT
- TYPE:
- OEM STROKE
- MATERIAL:
- 4140 STEEL
- RIDING STYLE:
- WATERCRAFT
- UNITS:
- ASSEMBLY
- DISPLACEMENT:
- 743 CC TO 781 CC
- MODEL:
- 2-CYCLE
- PRODUCT NAME:
- CRANKSHAFT ASSEMBLY
- COLOR/FINISH:
- STEEL
- STROKE LENGTH METRIC:
- 37.00 MM
MSRP: $733.95Now: $674.06Was: $748.95 -
On Sale
HOT RODS Crankshaft Kit CBK0053
HOT RODS
MSRP: $344.95Now: $316.76Was: $351.95HOT RODS Crankshaft Kit CBK0053Assembly 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...9210301- SKU:
- 9210301
- Availability:
- Ships Same Business Day
- Weight:
- 6.70 LBS
- UNITS:
- KIT
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- CRANKSHAFT KIT
- TYPE:
- OEM
MSRP: $344.95Now: $316.76Was: $351.95 -
On Sale
HOT RODS Crankshaft Kit CBK0002
HOT RODS
MSRP: $323.95Now: $296.96Was: $329.95HOT RODS Crankshaft Kit CBK0002Assembly 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...9210261- SKU:
- 9210261
- Availability:
- Ships Same Business Day
- Weight:
- 6.65 LBS
- PRODUCT NAME:
- CRANKSHAFT KIT
- TYPE:
- OEM
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
MSRP: $323.95Now: $296.96Was: $329.95 -
COMETIC Top End Gasket Set - Kawasaki C7762
COMETIC
$47.95COMETIC Top End Gasket Set Kawasaki C7762Top 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...C7762- SKU:
- C7762
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
$47.95Qty in Cart: 0Quantity:Price:$47.95Subtotal: -
COMETIC Top End Gasket Set - Suzuki C7778
COMETIC
$40.95COMETIC Top End Gasket Set Suzuki C7778Top 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...C7778- SKU:
- C7778
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- PRODUCT NAME:
- GASKET KIT
- UNITS:
- KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TOP END
$40.95 -
COMETIC Top End Gasket Set - Suzuki C7779
COMETIC
$60.95COMETIC Top End Gasket Set Suzuki C7779Top 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...C7779- SKU:
- C7779
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
$60.95Qty in Cart: 0Quantity:Price:$60.95Subtotal: -
COMETIC Top End Gasket Set - YZ85 C7851
COMETIC
$31.95COMETIC Top End Gasket Set YZ85 C7851Top 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...C7851- SKU:
- C7851
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- PRODUCT NAME:
- GASKET KIT
- UNITS:
- KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TOP END
$31.95 -
COMETIC Shift Shaft Seal OS236
COMETIC
$5.95COMETIC Shift Shaft Seal OS236High-quality seals allow for proper sealing of common leaks, Made of quality materials developed for maximum performance tolerances and longevity, Recommended to replace the countershaft sprocket seal when...9350875- SKU:
- 9350875
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- APPLICATION:
- SHIFTER SHAFT
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- SEAL
- UNITS:
- EACH
$5.95 -
COMETIC Water Pump Install - Honda C3047WP
COMETIC
$51.95COMETIC Water Pump Install Honda C3047WPKits contain all components needed to properly replace water pump impeller or leaking water pump cover, Quality seals, O-rings, bearings, crush washers and AFM Cometic engine cover gaskets included for dependable,...9345380- SKU:
- 9345380
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- WATER PUMP
- UNITS:
- KIT
- PRODUCT NAME:
- INSTALL KIT
$51.95Qty in Cart: 0Quantity:Price:$51.95Subtotal: -
COMETIC Water Pump Install - Yamaha C3057WP
COMETIC
$42.95COMETIC Water Pump Install Yamaha C3057WPKits contain all components needed to properly replace water pump impeller or leaking water pump cover, Quality seals, O-rings, bearings, crush washers and AFM Cometic engine cover gaskets included for dependable,...9345381- SKU:
- 9345381
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- WATER PUMP
- UNITS:
- KIT
- ENGINE TYPE:
- 4-STROKE
- PRODUCT NAME:
- INSTALL KIT
$42.95 -
COMETIC Top End Gaskets - Kawasaki C3598-EST
COMETIC
$84.95COMETIC Top End Gaskets Kawasaki C3598-ESTGaskets and gasket sets used by professionals in high-performance machines and as OE replacements worldwide, Each Kit contains the proper number of gaskets for one application, Made in the U.S.A.9345410- SKU:
- 9345410
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- UNITS:
- SET
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- GASKET SET
- TYPE:
- TOP END
$84.95Qty in Cart: 0Quantity:Price:$84.95Subtotal: -
COMETIC Top End Gaskets - KTM C3606
COMETIC
$74.95COMETIC Top End Gaskets KTM C3606Gaskets and gasket sets used by professionals in high-performance machines and as OE replacements worldwide, Each Kit contains the proper number of gaskets for one application, Made in the U.S.A.9345414- SKU:
- 9345414
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- PRODUCT NAME:
- GASKET SET
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- TOP END
- UNITS:
- SET
$74.95
