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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HOT RODS Crankshaft 4061
HOT RODS
$901.95If you're building a long-stroke engine for your ATV, the HOT RODS Crankshaft 4061 eliminates guesswork by arriving factory-assembled, trued to OEM specs, and ready to bolt in. This complete assembly pairs the proven HOT RODS crankshaft with matching...09210037- SKU:
- 09210037
- 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
$901.95 -
HOT RODS Crankshaft Kit CBK0053
HOT RODS
$423.95If you're building a high-performance engine or restoring a classic with increased displacement, the HOT RODS Crankshaft Kit CBK0053 delivers factory-matched reliability with measurable performance gains. This complete assembly arrives ready for...09210301- SKU:
- 09210301
- Availability:
- Ships Same Business Day
- Weight:
- 6.70 LBS
- UNITS:
- KIT
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- CRANKSHAFT KIT
- TYPE:
- OEM
$423.95 -
HOT RODS Crankshaft Kit CBK0002
HOT RODS
$397.95If you're building a high-performance engine or restoring a classic, the HOT RODS Crankshaft Kit CBK0002 delivers the reliability and precision that separates amateur builds from championship-level engines. This factory-assembled unit meets or exceeds...09210261- SKU:
- 09210261
- Availability:
- Ships Same Business Day
- Weight:
- 6.65 LBS
- PRODUCT NAME:
- CRANKSHAFT KIT
- TYPE:
- OEM
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$397.95 -
Wiseco Crankshaft Kit Yamaha YZ125 2005-2021 WPC163
WISECO
$421.95A worn or damaged crankshaft compromises the entire bottom end of your YZ125, directly affecting power delivery, reliability, and longevity. The Wiseco WPC163 kit eliminates guesswork by combining a factory-assembled crankshaft, precision bearings, and...09210549- SKU:
- 09210549
- Availability:
- Ships Same Business Day
- Weight:
- 7.95 LBS
- UNITS:
- KIT
- PRODUCT NAME:
- CRANKSHAFT KIT
- RIDING STYLE:
- OFF-ROAD
- STROKE LENGTH METRIC:
- 54.50 MM
$421.95Qty in Cart: 0Quantity:Price:$421.95Subtotal: -
Wiseco Crankshaft Kit Kawasaki KX85 2006-2013 WPC164
WISECO
$332.95A worn or damaged crankshaft directly compromises engine reliability, power delivery, and longevity—especially critical in high-RPM racing applications. The Wiseco WPC164 delivers a factory-assembled, precision-engineered solution that restores your KX85...09210550- SKU:
- 09210550
- Availability:
- Ships Same Business Day
- Weight:
- 6.25 LBS
- RIDING STYLE:
- OFF-ROAD
- STROKE LENGTH METRIC:
- 45.80 MM
- UNITS:
- KIT
- PRODUCT NAME:
- CRANKSHAFT KIT
$332.95 -
Wiseco Crankshaft Kit 2003-2004 Suzuki RM250 WPC165A
WISECO
$532.95A worn or damaged crankshaft compromises engine reliability and peak performance—especially in high-RPM racing applications where precision tolerances are non-negotiable. The Wiseco WPC165A delivers a complete bottom-end solution with factory-assembled...09210551- SKU:
- 09210551
- Availability:
- Ships Same Business Day
- Weight:
- 12.80 LBS
- STROKE LENGTH METRIC:
- 72.00 MM
- PRODUCT NAME:
- CRANKSHAFT KIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$532.95 -
Wiseco Suzuki RM85 2002-2020 Crankshaft WPC166
WISECO
$410.95If you're rebuilding a Suzuki RM85 engine, the Wiseco WPC166 crankshaft eliminates guesswork with a factory-assembled, precision-trued unit that meets OEM specifications right out of the box. This complete kit delivers everything needed for a reliable...09210553- SKU:
- 09210553
- Availability:
- Ships Same Business Day
- Weight:
- 6.55 LBS
- PRODUCT NAME:
- CRANKSHAFT KIT
- STROKE LENGTH METRIC:
- 46.80 MM
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$410.95Qty in Cart: 0Quantity:Price:$410.95Subtotal: -
HOT RODS Crankshaft Kit CBK0175
HOT RODS
$716.95If you're building a high-performance engine or need reliable bottom-end durability, a quality crankshaft assembly is non-negotiable. The HOT RODS Crankshaft Kit CBK0175 delivers factory-matched precision with the strength to handle boost, nitrous, or...09210481- SKU:
- 09210481
- Availability:
- Ships Same Business Day
- Weight:
- 13.45 LBS
- PRODUCT NAME:
- CRANKSHAFT KIT
- TYPE:
- OEM
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$716.95 -
HOT RODS Crankshaft Kit CBK0176
HOT RODS
$768.95If you're building a high-performance engine or rebuilding a tired block, the HOT RODS Crankshaft Kit CBK0176 gives you factory-spec reliability with performance-grade durability. This complete assembly arrives ready to install, eliminating the guesswork...09210482- SKU:
- 09210482
- Availability:
- Ships Same Business Day
- Weight:
- 13.50 LBS
- PRODUCT NAME:
- CRANKSHAFT KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- STROKER
- UNITS:
- KIT
$768.95 -
HOT RODS Bottom End Kit CBK0171
HOT RODS
$835.95A complete bottom-end rebuild demands precision components and comprehensive gasket coverage—this kit eliminates the guesswork by bundling everything you need for crankshaft installation in one package. Whether you're freshening a stock engine or...09210581- SKU:
- 09210581
- Availability:
- Ships Same Business Day
- Weight:
- 13.55 LBS
- MATERIAL:
- 4140 STEEL
- UNITS:
- KIT
- COLOR/FINISH:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- MODEL:
- 4-CYCLE
- TYPE:
- OE REPLACEMENT
- PRODUCT NAME:
- BOTTOM END KIT
- STROKE LENGTH METRIC:
- STANDARD
$835.95 -
HOT RODS Bottom End Kit CBK0172
HOT RODS
$741.95A complete bottom-end rebuild requires precision components and meticulous attention to detail—this kit eliminates guesswork by bundling everything you need in one box. Whether you're refreshing a tired engine or installing a stroker crank, the HOT RODS...09210582- SKU:
- 09210582
- Availability:
- Ships Same Business Day
- Weight:
- 11.05 LBS
- MATERIAL:
- 4140 STEEL
- MODEL:
- 4-CYCLE
- STROKE LENGTH METRIC:
- STANDARD
- TYPE:
- OE REPLACEMENT
- COLOR/FINISH:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- BOTTOM END KIT
$741.95 -
HOT RODS Bottom End Kit CBK0194
HOT RODS
$595.95A complete bottom-end rebuild demands precision components and comprehensive gasket coverage—this kit eliminates the guesswork by bundling everything you need for crankshaft installation in one package. Whether you're assembling a stroker engine or...09210585- SKU:
- 09210585
- Availability:
- Ships Same Business Day
- Weight:
- 10.35 LBS
- MODEL:
- 4-CYCLE
- UNITS:
- KIT
- MATERIAL:
- 4140 STEEL
- STROKE LENGTH METRIC:
- STANDARD
- COLOR/FINISH:
- STEEL
- PRODUCT NAME:
- BOTTOM END KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- OE REPLACEMENT
$595.95 -
HOT RODS Crankshaft Kit CBK0003
HOT RODS
$768.95If you're building a high-displacement engine or seeking measurable power gains, a stroker crankshaft assembly is one of the most effective upgrades available. The HOT RODS Crankshaft Kit CBK0003 delivers factory-spec reliability while offering increased...09210262- SKU:
- 09210262
- Availability:
- Ships Same Business Day
- Weight:
- 9.80 LBS
- PRODUCT NAME:
- CRANKSHAFT KIT
- TYPE:
- OEM
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$768.95 -
HOT RODS Crankshaft Kit CBK0005
HOT RODS
$768.95The HOT RODS Crankshaft Kit CBK0005 delivers a factory-assembled, performance-proven crankshaft assembly that meets or exceeds OEM specifications without compromise. If you're building a stroker engine or replacing a worn crank, this kit eliminates the...09210264- SKU:
- 09210264
- Availability:
- Ships Same Business Day
- Weight:
- 12.30 LBS
- TYPE:
- OEM
- PRODUCT NAME:
- CRANKSHAFT KIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$768.95 -
HOT RODS Crankshaft Kit CBK0084
HOT RODS
$716.95If you're building a high-performance engine or need to replace a worn crankshaft, the HOT RODS CBK0084 delivers factory-matched precision with the durability to handle demanding track conditions. This complete assembly arrives ready for installation,...09210329- SKU:
- 09210329
- Availability:
- Ships Same Business Day
- Weight:
- 10.00 LBS
- PRODUCT NAME:
- CRANKSHAFT KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- OEM
- UNITS:
- KIT
$716.95 -
HOT RODS Crankshaft Kit CBK0085
HOT RODS
$502.95If you're building a high-performance engine or restoring a classic to exceed factory specs, the HOT RODS Crankshaft Kit CBK0085 delivers the reliability and performance you need without compromise. This complete assembly arrives factory-assembled and...09210330- SKU:
- 09210330
- Availability:
- Ships Same Business Day
- Weight:
- 6.50 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- CRANKSHAFT KIT
- TYPE:
- OEM
$502.95Qty in Cart: 0Quantity:Price:$502.95Subtotal: -
HOT RODS Crankshaft Kit CBK0086
HOT RODS
$716.95If you're building a high-performance engine or refreshing a worn bottom end, the HOT RODS Crankshaft Kit CBK0086 delivers the reliability and performance you need without compromise. This factory-assembled complete crankshaft and connecting rod assembly...09210331- SKU:
- 09210331
- Availability:
- Ships Same Business Day
- Weight:
- 13.30 LBS
- PRODUCT NAME:
- CRANKSHAFT KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- OEM
- UNITS:
- KIT
$716.95 -
HOT RODS Crankshaft Kit CBK0087
HOT RODS
$716.95If you're building or rebuilding a high-performance engine, the HOT RODS Crankshaft Kit CBK0087 delivers the reliability and durability you need to handle sustained power and RPM demands. This factory-assembled unit meets or surpasses OEM specifications,...09210332- SKU:
- 09210332
- Availability:
- Ships Same Business Day
- Weight:
- 10.51 LBS
- PRODUCT NAME:
- CRANKSHAFT KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- OEM
- UNITS:
- KIT
$716.95 -
HOT RODS Crankshaft Kit CBK0088
HOT RODS
$768.95If you're building a high-performance engine or restoring a classic with upgraded displacement, the HOT RODS Crankshaft Kit CBK0088 delivers the reliability and precision you need for consistent power delivery across the RPM band. This factory-assembled...09210333- SKU:
- 09210333
- Availability:
- Ships Same Business Day
- Weight:
- 12.25 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- CRANKSHAFT KIT
- TYPE:
- OEM
$768.95 -
HOT RODS Crankshaft Kit CBK0089
HOT RODS
$370.95If you're building a high-performance engine or restoring a classic with modern reliability in mind, the HOT RODS Crankshaft Kit CBK0089 delivers the precision engineering you need without compromise. This factory-assembled unit meets or exceeds OEM...09210334- SKU:
- 09210334
- Availability:
- Ships Same Business Day
- Weight:
- 8.70 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- CRANKSHAFT KIT
- TYPE:
- OEM
$370.95
