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 Kit CBK0077
HOT RODS
$502.95If you're building a high-performance engine or pushing your current setup to the limit, a quality crankshaft assembly is non-negotiable. The HOT RODS Crankshaft Kit CBK0077 delivers factory-spec precision with performance credentials that meet or exceed...09210325- SKU:
- 09210325
- Availability:
- Ships Same Business Day
- Weight:
- 8.50 LBS
- TYPE:
- OEM
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- CRANKSHAFT KIT
- UNITS:
- KIT
$502.95 -
HOT RODS Crankshaft Kit CBK0078
HOT RODS
$595.95If you're building a high-performance engine or restoring a classic with serious power ambitions, the HOT RODS Crankshaft Kit CBK0078 delivers the reliability and performance you need without compromise. This factory-assembled crankshaft meets or exceeds...09210326- SKU:
- 09210326
- Availability:
- Ships Same Business Day
- Weight:
- 12.45 LBS
- PRODUCT NAME:
- CRANKSHAFT KIT
- TYPE:
- OEM
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$595.95 -
HOT RODS Crankshaft Kit CBK0079
HOT RODS
$595.95If you're building a high-displacement or stroker engine, the HOT RODS Crankshaft Kit CBK0079 delivers the durability and precision you need to handle increased displacement and power demands. This complete crankshaft assembly arrives factory-assembled...09210327- SKU:
- 09210327
- Availability:
- Ships Same Business Day
- Weight:
- 12.30 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- CRANKSHAFT KIT
- TYPE:
- OEM
$595.95 -
HOT RODS Crankshaft Kit CBK0135
HOT RODS
$595.95If you're building a high-performance engine or rebuilding after a failure, the HOT RODS Crankshaft Kit CBK0135 delivers the reliability and precision you need without compromise. This factory-assembled unit meets or exceeds OEM specifications, giving...09210367- SKU:
- 09210367
- Availability:
- Ships Same Business Day
- Weight:
- 11.90 LBS
- PRODUCT NAME:
- CRANKSHAFT KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- OEM
- UNITS:
- KIT
$595.95 -
HOT RODS Crankshaft Kit CBK0138
HOT RODS
$768.95If you're building a high-performance engine or restoring a classic with modern reliability, the HOT RODS Crankshaft Kit CBK0138 delivers the durability and precision you need to handle increased displacement and power demands. This factory-assembled...09210368- SKU:
- 09210368
- Availability:
- Ships Same Business Day
- Weight:
- 13.20 LBS
- PRODUCT NAME:
- CRANKSHAFT KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- STROKER
- UNITS:
- KIT
$768.95 -
HOT RODS Crankshaft Kit CBK0139
HOT RODS
$768.95If you're building a high-performance engine or restoring a classic with upgraded displacement, the HOT RODS Crankshaft Kit CBK0139 delivers the durability and precision you need for reliable power. This factory-assembled stroker crank assembly is...09210369- SKU:
- 09210369
- Availability:
- Ships Same Business Day
- Weight:
- 10.85 LBS
- PRODUCT NAME:
- CRANKSHAFT KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- STROKER
- UNITS:
- KIT
$768.95 -
HOT RODS Crankshaft Kit CBK0141
HOT RODS
$874.95If you're building a high-performance engine or restoring a classic, a quality crankshaft assembly is non-negotiable—it's the foundation of reliable power delivery and durability under load. The HOT RODS Crankshaft Kit CBK0141 arrives factory-assembled...09210370- SKU:
- 09210370
- Availability:
- Ships Same Business Day
- Weight:
- 12.75 LBS
- PRODUCT NAME:
- CRANKSHAFT KIT
- TYPE:
- OEM
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$874.95Qty in Cart: 0Quantity:Price:$874.95Subtotal: -
HOT RODS Crankshaft Kit CBK0159
HOT RODS
$679.95If you're building a high-performance engine or rebuilding your existing one, the HOT RODS Crankshaft Kit CBK0159 delivers the reliability and durability you need without compromise. This factory-assembled crankshaft meets or exceeds OEM specifications...09210381- SKU:
- 09210381
- Availability:
- Ships Same Business Day
- Weight:
- 13.15 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- STROKER
- UNITS:
- KIT
- PRODUCT NAME:
- CRANKSHAFT KIT
$679.95 -
HOT RODS Crankshaft Kit CBK0165
HOT RODS
$980.95If you're building a high-performance engine or pushing your current setup beyond factory limits, a quality crankshaft assembly is non-negotiable. The HOT RODS Crankshaft Kit CBK0165 delivers factory-matched precision with the durability to handle...09210386- SKU:
- 09210386
- Availability:
- Ships Same Business Day
- Weight:
- 13.35 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- STROKER
- UNITS:
- KIT
- PRODUCT NAME:
- CRANKSHAFT KIT
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
$980.95 -
HOT RODS Crankshaft Kit CBK0167
HOT RODS
$927.95If you're building a high-performance engine or restoring a classic with serious power goals, a quality crankshaft assembly is non-negotiable. The HOT RODS Crankshaft Kit CBK0167 delivers factory-matched precision with the durability to handle aggressive...09210387- SKU:
- 09210387
- Availability:
- Ships Same Business Day
- Weight:
- 10.05 LBS
- TYPE:
- OEM
- PRODUCT NAME:
- CRANKSHAFT KIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$927.95 -
HOT RODS Crankshaft 4021
HOT RODS
$515.95If you're building a long-stroke engine for your ATV, you need a crankshaft that's been engineered for the abuse that comes with high-performance riding. The HOT RODS Crankshaft 4021 arrives factory-assembled and trued to OEM specifications, eliminating...09210388- SKU:
- 09210388
- Availability:
- Ships Same Business Day
- Weight:
- 7.18 LBS
- COLOR/FINISH:
- STEEL
- PRODUCT NAME:
- CRANKSHAFT ASSEMBLY
- RIDING STYLE:
- OFF-ROAD
- MATERIAL:
- 4140 STEEL
- UNITS:
- ASSEMBLY
- DISPLACEMENT:
- 250 CC
- FEATURES:
- HEAVY DUTY CRANKSHAFT
- MODEL:
- 4-CYCLE
- STROKE LENGTH METRIC:
- 53.60 MM
- TYPE:
- OEM STROKE
$515.95 -
HOT RODS Crankshaft 4031
HOT RODS
$436.95If you're building a long-stroke engine for your ATV, you need a crankshaft engineered to handle the increased demands of extended stroke geometry. The HOT RODS Crankshaft 4031 arrives factory-assembled and pre-trued to OEM specifications, eliminating...09210389- SKU:
- 09210389
- Availability:
- Ships Same Business Day
- Weight:
- 4.06 LBS
- PRODUCT NAME:
- CRANKSHAFT ASSEMBLY
- STROKE LENGTH METRIC:
- 40.80 MM
- UNITS:
- ASSEMBLY
- COLOR/FINISH:
- STEEL
- DISPLACEMENT:
- 65 CC
- FEATURES:
- STANDARD CRANKSHAFT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- OEM STROKE
- MATERIAL:
- 4140 STEEL
- MODEL:
- 2-CYCLE
$436.95 -
HOT RODS Crankshaft 4098
HOT RODS
$502.95If you're running a 400cc ATV and want to unlock genuine performance gains without extensive machine work, the HOT RODS Crankshaft 4098 delivers a factory-assembled, long-stroke solution that meets or surpasses OEM specifications. This complete assembly...09210244- SKU:
- 09210244
- Availability:
- Ships Same Business Day
- Weight:
- 9.45 LBS
- FEATURES:
- STANDARD CRANKSHAFT
- MODEL:
- 4-CYCLE
- TYPE:
- OEM STROKE
- DISPLACEMENT:
- 450 CC
- MATERIAL:
- 4140 STEEL
- UNITS:
- ASSEMBLY
- PRODUCT NAME:
- CRANKSHAFT ASSEMBLY
- COLOR/FINISH:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- STROKE LENGTH METRIC:
- 60.80 MM
$502.95 -
HOT RODS Crankshaft - Stroker 4197
HOT RODS
$337.95If you're serious about maximizing displacement and low-end torque on your ATV, a stroker crank is the most cost-effective path to real power gains. The HOT RODS Stroker 4197 eliminates the machine work and custom fabrication typically required for...09210246- SKU:
- 09210246
- 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
$337.95 -
HOT RODS Crankshaft Kit CBK0187
HOT RODS
$622.95The HOT RODS Crankshaft Kit CBK0187 is engineered for builders and racers who demand reliability under extreme conditions. Factory-assembled and true to OEM specifications, this complete crankshaft assembly arrives ready for installation—eliminating...09210504- SKU:
- 09210504
- Availability:
- Ships Same Business Day
- Weight:
- 6.75 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- CRANKSHAFT KIT
- TYPE:
- OEM
$622.95 -
HOT RODS Crankshaft Kit CBK0188
HOT RODS
$476.95If you're serious about maximizing displacement and power output, a stroker crankshaft assembly is one of the most effective modifications you can make. The HOT RODS CBK0188 arrives factory-assembled and pre-trued to OEM specifications, eliminating the...09210505- SKU:
- 09210505
- Availability:
- Ships Same Business Day
- Weight:
- 4.60 LBS
- UNITS:
- KIT
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- CRANKSHAFT KIT
- TYPE:
- OEM
$476.95 -
HOT RODS Crankshaft Kit CBK0191
HOT RODS
$768.95If you're building a high-performance engine or restoring a classic, a quality crankshaft assembly is non-negotiable—it's the foundation of reliable power delivery and longevity under boost or sustained RPM. The HOT RODS Crankshaft Kit CBK0191 arrives...09210521- SKU:
- 09210521
- Availability:
- Ships Same Business Day
- Weight:
- 13.40 LBS
- RIDING STYLE:
- OFF-ROAD
- PRODUCT NAME:
- CRANKSHAFT KIT
- TYPE:
- OEM
- UNITS:
- KIT
$768.95 -
HOT RODS Crankshaft Assembly 4053
HOT RODS
$247.95If you're serious about maximizing displacement and power output on your sport ATV, a long-stroke crankshaft assembly is one of the most effective modifications available—and the HOT RODS 4053 delivers that added cubic capacity without requiring...09210021- SKU:
- 09210021
- 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
$247.95 -
HOT RODS Crankshaft Assembly 4055
HOT RODS
$305.95If you're building a high-performance long-stroke engine for your ATV, the HOT RODS Crankshaft Assembly 4055 eliminates guesswork and machine work by delivering a complete, factory-assembled unit that meets or exceeds OEM specifications straight out of...09210023- SKU:
- 09210023
- 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
$305.95 -
HOT RODS Crankshaft Assembly - Stroker 4116
HOT RODS
$289.95A stroker crankshaft transforms your ATV's displacement and low-end torque without extensive machine work—delivering the cubic inches and power gains you need for serious trail performance. Hot Rods' engineered applications eliminate the guesswork by...09210025- SKU:
- 09210025
- 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
$289.95
