Dirt Bike Crankshafts and Parts
Dirt Bike Crankshafts & Bottom End Rebuild Kits for KTM, Husqvarna, Gas Gas & Suzuki at JJ Motorsports
Rebuild your dirt bike's bottom end with premium crankshaft assemblies and complete kits from JJ Motorsports, precision-engineered for perfect balance, maximum strength, and race-proven reliability in motocross, enduro, and trail riding. Our selection includes OEM-spec Hot Rods crankshafts and full Wossner crankshaft assemblies with rods, bearings, and seals for leak-free operation and extended engine life under extreme RPM and load. Compatible with KTM SX/EXC, Husqvarna FC/FE, Gas Gas MC/EC, and Suzuki RM-Z models, these high-quality components ensure smoother power delivery, reduced vibration, and championship-level durability in dusty, high-stress conditions. Whether refreshing a tired motor or building a stroker, Hot Rods and Wossner deliver exact OEM stroke, balanced cranks, and bolt-in fitment, and unmatched performance for 250-450cc 2-stroke and 4-stroke engines.
At JJ Motorsports, we stock the best dirt bike crankshafts and bottom-end kits from Hot Rods and Wossner with fast shipping and expert support. Free shipping over $99!
Top Dirt Bike Crankshafts & Bottom End Kits
- Wossner Crankshaft Assembly Gas Gas/Husqvarna/KTM CS2070 – Premium forged crankshaft assembly for Gas Gas, Husqvarna, and KTM 250/300 models; perfectly balanced for high-RPM reliability and smooth power.
- Wossner Crankshaft Assembly Husaberg/Husqvarna/KTM CS2012 – High-performance crankshaft for older Husaberg and current Husqvarna/KTM platforms; engineered for extreme durability and precise fit.
- Hot Rods OE Crankshaft Replacement Kit Suzuki CBK0081 – Complete OEM-spec crankshaft assembly for Suzuki RM-Z models; includes balanced crank, rod, bearings, and seals for factory performance and easy installation.
Browse our in-stock inventory below with same-day shipping and expert support. Free shipping on orders over $99! Questions? Contact us for fitment advice!
- Product
- Qty in Cart
- Quantity
- Price
- Subtotal
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Wiseco Crankshaft KTM 65 SX 2003-2008 WPC161A
WISECO
$329.95The WISECO Crankshaft WPC161A is engineered for optimal performance and reliability. This comprehensive crankshaft kit includes everything you need for a seamless installation, ensuring your engine runs smoothly and efficiently. With precision components...09210547- SKU:
- 09210547
- Availability:
- Ships Same Business Day
- Weight:
- 6.10 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- CRANKSHAFT KIT
- STROKE LENGTH METRIC:
- 40.00 MM
$329.95Qty in Cart: 0Quantity:Price:$329.95Subtotal: -
HOT RODS Crankshaft Kit CBK0001
HOT RODS
$282.95Assembly 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 rebuildable with genuine Hot Rods...09210260- SKU:
- 09210260
- Availability:
- Ships Same Business Day
- Weight:
- 7.10 LBS
- TYPE:
- OEM
- PRODUCT NAME:
- CRANKSHAFT KIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$282.95Qty in Cart: 0Quantity:Price:$282.95Subtotal: -
HOT RODS Crankshaft Kit CBK0004
HOT RODS
$686.95Assembly 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 rebuildable with genuine Hot Rods...09210263- SKU:
- 09210263
- Availability:
- Ships Same Business Day
- Weight:
- 9.47 LBS
- TYPE:
- OEM
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- CRANKSHAFT KIT
- UNITS:
- KIT
$686.95Qty in Cart: 0Quantity:Price:$686.95Subtotal: -
HOT RODS Crankshaft Kit CBK0006
HOT RODS
$736.95Assembly 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 rebuildable with genuine Hot Rods...09210265- SKU:
- 09210265
- Availability:
- Ships Same Business Day
- Weight:
- 12.35 LBS
- PRODUCT NAME:
- CRANKSHAFT KIT
- TYPE:
- OEM
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$736.95Qty in Cart: 0Quantity:Price:$736.95Subtotal: -
HOT RODS Crankshaft Assembly 4035
HOT RODS
$417.95Sold 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 installation, Completely...H124- SKU:
- H124
- Availability:
- Ships Same Business Day
- Weight:
- 6.30 LBS
- COLOR/FINISH:
- STEEL
- DISPLACEMENT:
- 125 CC
- MATERIAL:
- 4140 STEEL
- UNITS:
- ASSEMBLY
- FEATURES:
- STANDARD CRANKSHAFT
- MODEL:
- 2-CYCLE
- TYPE:
- OEM STROKE
- PRODUCT NAME:
- CRANKSHAFT ASSEMBLY
- RIDING STYLE:
- OFF-ROAD
- STROKE LENGTH METRIC:
- 54.60 MM
$417.95Qty in Cart: 0Quantity:Price:$417.95Subtotal: -
HOT RODS Crankshaft Kit 4416
HOT RODS
$453.95Sold 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 installation, Completely...09210516- SKU:
- 09210516
- Availability:
- Ships Same Business Day
- Weight:
- 6.95 LBS
- COLOR/FINISH:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- DISPLACEMENT:
- 250 CC
- PRODUCT NAME:
- CRANKSHAFT ASSEMBLY
- STROKE LENGTH METRIC:
- 53.60 MM
- MATERIAL:
- 4140 STEEL
- UNITS:
- ASSEMBLY
- FEATURES:
- STANDARD CRANKSHAFT
- MODEL:
- 4-CYCLE
- TYPE:
- OEM STROKE
$453.95Qty in Cart: 0Quantity:Price:$453.95Subtotal: -
HOT RODS Crankshaft 4093
HOT RODS
$465.95Sold 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 installation, Completely...09210213- SKU:
- 09210213
- Availability:
- Ships Same Business Day
- Weight:
- 9.94 LBS
- PRODUCT NAME:
- CRANKSHAFT ASSEMBLY
- MODEL:
- 4-CYCLE
- DISPLACEMENT:
- 450 CC
- FEATURES:
- STANDARD CRANKSHAFT
- TYPE:
- OEM STROKE
- COLOR/FINISH:
- STEEL
- MATERIAL:
- 4140 STEEL
- RIDING STYLE:
- OFF-ROAD
- STROKE LENGTH METRIC:
- 62.10 MM
- UNITS:
- ASSEMBLY
$465.95Qty in Cart: 0Quantity:Price:$465.95Subtotal: -
Wiseco Crankshaft Kit for 1992-2001 Kawasaki KX250 WPC128B
WISECO
$479.95The WISECO WPC128B Crankshaft Assembly is engineered for maximum performance and reliability. This all-in-one solution includes a top-end bearing, premium main bearings, and a comprehensive bottom-end gasket set, ensuring that you have everything needed...09210109- SKU:
- 09210109
- Availability:
- Ships Same Business Day
- Weight:
- 12.51 LBS
- TYPE:
- BOTTOM END
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- FEATURES:
- INCLUDES BEARING AND GASKET
- PRODUCT NAME:
- CRANKSHAFT ASSEMBLY
$479.95Qty in Cart: 0Quantity:Price:$479.95Subtotal: -
Wiseco Crankshaft Assembly with Bearings and Gasket for 2002-2018 Yamaha YZ85 WPC123
WISECO
$339.95The WISECO Crankshaft with Bearing and Gasket WPC123 is engineered for high performance and durability, making it an ideal choice for enthusiasts seeking reliability in their engine builds. This comprehensive kit includes everything you need for a...09210099- SKU:
- 09210099
- Availability:
- Ships Same Business Day
- Weight:
- 6.27 LBS
- STROKE LENGTH METRIC:
- 47.80 MM
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- TYPE:
- BOTTOM END
- FEATURES:
- INCLUDES BEARING AND GASKET
- PRODUCT NAME:
- CRANKSHAFT ASSEMBLY
$339.95Qty in Cart: 0Quantity:Price:$339.95Subtotal: -
Wiseco Crankshaft Assembly with Bearing and Gasket for Yamaha YZ125 1998-2000 WPC124
WISECO
$384.95Upgrade your engine with the WISECO Crankshaft WPC124, designed for optimal performance and reliability. This comprehensive kit includes a precision-assembled crankshaft, top-end bearing, premium main bearings, and a complete bottom-end gasket set,...09210100- SKU:
- 09210100
- Availability:
- Ships Same Business Day
- Weight:
- 8.06 LBS
- FEATURES:
- INCLUDES BEARING AND GASKET
- PRODUCT NAME:
- CRANKSHAFT ASSEMBLY
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- STROKE LENGTH METRIC:
- 54.50 MM
- UNITS:
- KIT
- TYPE:
- BOTTOM END
$384.95Qty in Cart: 0Quantity:Price:$384.95Subtotal: -
Wiseco Crankshaft Kit for Kawasaki KX60 1985-2003 and Suzuki RM60 2003 WPC130
WISECO
$339.95Upgrade your engine's performance with the WISECO Crankshaft WPC130, designed for durability and precision. This comprehensive kit includes everything you need for a complete overhaul, ensuring optimal functionality and longevity. Experience enhanced...09210103- SKU:
- 09210103
- Availability:
- Ships Same Business Day
- Weight:
- 5.92 LBS
- STROKE LENGTH METRIC:
- 41.60 MM
- PRODUCT NAME:
- CRANKSHAFT ASSEMBLY
- FEATURES:
- INCLUDES BEARING AND GASKET
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- BOTTOM END
- UNITS:
- KIT
$339.95Qty in Cart: 0Quantity:Price:$339.95Subtotal: -
Wiseco Crankshaft Kit for 2002-2004 Honda CR250R WPC132
WISECO
$459.95Experience unparalleled performance with the WISECO Crankshaft, expertly designed for optimal engine efficiency. This comprehensive kit includes everything you need for a complete overhaul, featuring precision-engineered components that meet OEM...09210105- SKU:
- 09210105
- Availability:
- Ships Same Business Day
- Weight:
- 12.55 LBS
- STROKE LENGTH METRIC:
- 72.00 MM
- PRODUCT NAME:
- CRANKSHAFT ASSEMBLY
- UNITS:
- KIT
- FEATURES:
- INCLUDES BEARING AND GASKET
- TYPE:
- BOTTOM END
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
$459.95Qty in Cart: 0Quantity:Price:$459.95Subtotal: -
Wiseco Crankshaft Assembly for 1990-2002 Honda CR125R WPC116A
WISECO
$359.95Experience unparalleled performance with the WISECO Crankshaft, meticulously engineered for optimal power and reliability. This comprehensive kit includes everything you need for a complete rebuild, ensuring your engine operates at peak efficiency. ...09210107- SKU:
- 09210107
- Availability:
- Ships Same Business Day
- Weight:
- 8.26 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- TYPE:
- BOTTOM END
- FEATURES:
- INCLUDES BEARING AND GASKET
- MATERIAL:
- STEEL
- PRODUCT NAME:
- CRANKSHAFT ASSEMBLY
$359.95Qty in Cart: 0Quantity:Price:$359.95Subtotal: -
Wiseco Honda CRF150R 2007-2024 Crankshaft Assembly WPC149
WISECO
$429.95The WISECO Crankshaft Assembly WPC149 is engineered for optimal performance and reliability. This comprehensive kit includes everything you need for a complete rebuild, ensuring your engine operates at its best. With precision manufacturing and superior...09210148- SKU:
- 09210148
- Availability:
- Ships Same Business Day
- Weight:
- 7.11 LBS
- STROKE LENGTH METRIC:
- 43.70 MM
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- TYPE:
- BOTTOM END
- FEATURES:
- INCLUDES BEARING AND GASKET
- PRODUCT NAME:
- CRANKSHAFT ASSEMBLY
$429.95Qty in Cart: 0Quantity:Price:$429.95Subtotal: -
WSM Crankshaft Assembly 010-1061WSM
WSM
$764.06Complete crankshaft assembly with connecting rod, Will meet or exceed OEM performance, Trued to OEM specifications, Multi-cylinder applications include main bearings, Rebuildable, Ready for installation09210486- SKU:
- 09210486
- Availability:
- Ships Same Business Day
- Weight:
- 24.30 LBS
- PRODUCT NAME:
- CRANKSHAFT
- RIDING STYLE:
- WATERCRAFT
- MATERIAL:
- STEEL
- UNITS:
- EACH
$764.06Qty in Cart: 0Quantity:Price:$764.06Subtotal: -
WSM Crankshaft Assembly 010-1018-01WSM
WSM
$810.90Complete crankshaft assembly with connecting rod, Will meet or exceed OEM performance, Trued to OEM specifications, Multi-cylinder applications include main bearings, Rebuildable, Ready for installation09210226- SKU:
- 09210226
- Availability:
- Ships Same Business Day
- Weight:
- 25.30 LBS
- PRODUCT NAME:
- CRANKSHAFT ASSEMBLY
- MATERIAL:
- STEEL
- RIDING STYLE:
- WATERCRAFT
- UNITS:
- KIT
$810.90Qty in Cart: 0Quantity:Price:$810.90Subtotal: -
WSM Crankshaft Assembly 010-1019-01WSM
WSM
$764.95Complete crankshaft assembly with connecting rod, Will meet or exceed OEM performance, Trued to OEM specifications, Multi-cylinder applications include main bearings, Rebuildable, Ready for installation09210228- SKU:
- 09210228
- Availability:
- Ships Same Business Day
- Weight:
- 28.58 LBS
- MATERIAL:
- STEEL
- UNITS:
- KIT
- PRODUCT NAME:
- CRANKSHAFT ASSEMBLY
- RIDING STYLE:
- WATERCRAFT
$764.95Qty in Cart: 0Quantity:Price:$764.95Subtotal: -
WSM Crankshaft Assembly 010-1025WSM
WSM
$719.00Complete crankshaft assembly with connecting rod, Will meet or exceed OEM performance, Trued to OEM specifications, Multi-cylinder applications include main bearings, Rebuildable, Ready for installation09210229- SKU:
- 09210229
- Availability:
- Ships Same Business Day
- Weight:
- 20.60 LBS
- PRODUCT NAME:
- CRANKSHAFT ASSEMBLY
- RIDING STYLE:
- WATERCRAFT
- MATERIAL:
- STEEL
- UNITS:
- KIT
$719.00Qty in Cart: 0Quantity:Price:$719.00Subtotal:
