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 Bottom End Kit CBK0205
HOT RODS
$716.95A complete bottom-end rebuild requires precision-matched components and quality seals to ensure longevity and reliable power delivery. The HOT RODS Bottom End Kit CBK0205 consolidates everything you need for crankshaft installation in one package,...09210576- SKU:
- 09210576
- Availability:
- Ships Same Business Day
- Weight:
- 10.00 LBS
- MODEL:
- 4-CYCLE
- UNITS:
- KIT
- MATERIAL:
- 4140 STEEL
- STROKE LENGTH METRIC:
- STANDARD
- TYPE:
- OE REPLACEMENT
- COLOR/FINISH:
- STEEL
- PRODUCT NAME:
- BOTTOM END KIT
- RIDING STYLE:
- OFF-ROAD
$716.95 -
HOT RODS Crankshaft Kit CBK0091
HOT RODS
$476.95If you're building a high-performance engine or refreshing a tired bottom end, the HOT RODS Crankshaft Kit CBK0091 delivers factory-matched reliability with measurable performance gains. This complete assembly arrives pre-assembled and true to OEM...09210336- SKU:
- 09210336
- Availability:
- Ships Same Business Day
- Weight:
- 8.25 LBS
- PRODUCT NAME:
- CRANKSHAFT KIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- TYPE:
- OEM
$476.95 -
HOT RODS Crankshaft Kit CBK0092
HOT RODS
$502.95If you're building a high-performance engine or refreshing a tired bottom end, the HOT RODS Crankshaft Kit CBK0092 gives you a factory-assembled solution that meets or exceeds OEM specifications right out of the box. This complete assembly eliminates the...09210337- SKU:
- 09210337
- Availability:
- Ships Same Business Day
- Weight:
- 11.95 LBS
- TYPE:
- OEM
- PRODUCT NAME:
- CRANKSHAFT KIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$502.95 -
HOT RODS Crankshaft Kit CBK0093
HOT RODS
$689.95If you're building a high-performance engine or looking to increase displacement without a complete engine swap, the HOT RODS Crankshaft Kit CBK0093 delivers the geometry and durability you need. This factory-assembled crankshaft arrives true to OEM...09210338- SKU:
- 09210338
- Availability:
- Ships Same Business Day
- Weight:
- 12.85 LBS
- PRODUCT NAME:
- CRANKSHAFT KIT
- TYPE:
- OEM
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$689.95Qty in Cart: 0Quantity:Price:$689.95Subtotal: -
HOT RODS Crankshaft Kit CBK0094
HOT RODS
$716.95If you're pushing your engine beyond factory limits, the HOT RODS Crankshaft Kit CBK0094 delivers the stroke and durability required for serious performance builds. Factory-assembled and true to OEM specifications, this complete crankshaft assembly...09210339- SKU:
- 09210339
- Availability:
- Ships Same Business Day
- Weight:
- 12.55 LBS
- TYPE:
- OEM
- UNITS:
- KIT
- PRODUCT NAME:
- CRANKSHAFT KIT
- RIDING STYLE:
- OFF-ROAD
$716.95 -
HOT RODS Crankshaft Kit CBK0095
HOT RODS
$874.95If you're building a high-performance engine or restoring a machine that demands reliability under extreme conditions, the HOT RODS Crankshaft Kit CBK0095 delivers factory-matched precision without compromise. This complete assembly arrives...09210340- SKU:
- 09210340
- Availability:
- Ships Same Business Day
- Weight:
- 13.35 LBS
- PRODUCT NAME:
- CRANKSHAFT KIT
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- TYPE:
- OEM
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$874.95 -
HOT RODS Crankshaft Kit CBK0099
HOT RODS
$741.95If you're building or rebuilding a high-performance engine, the quality of your crankshaft assembly directly impacts reliability, durability, and power delivery. The HOT RODS Crankshaft Kit CBK0099 is factory-assembled and true to OEM specifications,...09210341- SKU:
- 09210341
- Availability:
- Ships Same Business Day
- Weight:
- 9.90 LBS
- TYPE:
- OEM
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- CRANKSHAFT KIT
$741.95 -
HOT RODS Crankshaft Kit CBK0100
HOT RODS
$423.95If you're building a high-performance engine, your crankshaft is the foundation—and the HOT RODS CBK0100 delivers the reliability and precision you need to maximize power and durability. Factory-assembled and true to OEM specifications, this complete...09210342- SKU:
- 09210342
- Availability:
- Ships Same Business Day
- Weight:
- 6.30 LBS
- TYPE:
- OEM
- PRODUCT NAME:
- CRANKSHAFT KIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$423.95 -
HOT RODS Crankshaft Kit CBK0101
HOT RODS
$423.95If 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 CBK0101 arrives factory-assembled and true to OEM specifications, eliminating...09210343- SKU:
- 09210343
- Availability:
- Ships Same Business Day
- Weight:
- 6.60 LBS
- PRODUCT NAME:
- CRANKSHAFT KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- OEM
- UNITS:
- KIT
$423.95Qty in Cart: 0Quantity:Price:$423.95Subtotal: -
HOT RODS Crankshaft Kit CBK0102
HOT RODS
$397.95If you're building a high-performance engine or restoring a classic with modern reliability in mind, the HOT RODS Crankshaft Kit CBK0102 delivers factory-spec precision with measurable performance gains over stock. This complete assembly arrives ready...09210344- SKU:
- 09210344
- Availability:
- Ships Same Business Day
- Weight:
- 6.65 LBS
- PRODUCT NAME:
- CRANKSHAFT KIT
- TYPE:
- OEM
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$397.95 -
HOT RODS Crankshaft 4075
HOT RODS
$331.95If you're serious about extracting maximum performance from your ATV's engine, a purpose-built crankshaft assembly is non-negotiable. The HOT RODS Crankshaft 4075 arrives factory-assembled and trued to OEM specifications, eliminating guesswork and...09210127- SKU:
- 09210127
- Availability:
- Ships Same Business Day
- Weight:
- 5.25 LBS
- COLOR/FINISH:
- STEEL
- DISPLACEMENT:
- 150 CC
- RIDING STYLE:
- OFF-ROAD
- STROKE LENGTH METRIC:
- 43.80 MM
- PRODUCT NAME:
- CRANKSHAFT ASSEMBLY
- FEATURES:
- HEAVY DUTY CRANKSHAFT
- MATERIAL:
- 4140 STEEL
- UNITS:
- ASSEMBLY
- MODEL:
- 4-CYCLE
- TYPE:
- OEM STROKE
$331.95 -
HOT RODS Crankshaft 4083
HOT RODS
$436.95If you're building a long-stroke engine for your ATV, the HOT RODS Crankshaft 4083 delivers the bottom-end durability and performance you need without the typical machine work headaches. This complete assembly arrives factory-assembled and trued to OEM...09210128- SKU:
- 09210128
- Availability:
- Ships Same Business Day
- Weight:
- 7.17 LBS
- STROKE LENGTH METRIC:
- 52.20 MM
- FEATURES:
- HEAVY DUTY CRANKSHAFT
- MATERIAL:
- 4140 STEEL
- UNITS:
- ASSEMBLY
- COLOR/FINISH:
- STEEL
- PRODUCT NAME:
- CRANKSHAFT ASSEMBLY
- RIDING STYLE:
- OFF-ROAD
- DISPLACEMENT:
- 250 CC
- MODEL:
- 4-CYCLE
- TYPE:
- OEM STROKE
$436.95 -
HOT RODS Crankshaft Assembly 4138
HOT RODS
$464.95If you're building a high-performance long-stroke engine for your ATV, a properly assembled crankshaft is the foundation of reliability and power delivery. The HOT RODS Crankshaft Assembly 4138 arrives factory-assembled and trued to OEM specifications,...H134- SKU:
- H134
- Availability:
- Ships Same Business Day
- Weight:
- 8.92 LBS
- COLOR/FINISH:
- STEEL
- MATERIAL:
- 4140 STEEL
- UNITS:
- ASSEMBLY
- RIDING STYLE:
- OFF-ROAD
- STROKE LENGTH METRIC:
- 49.80 MM
- DISPLACEMENT:
- 250 CC
- MODEL:
- 2-CYCLE
- PRODUCT NAME:
- CRANKSHAFT ASSEMBLY
- FEATURES:
- STANDARD CRANKSHAFT
- TYPE:
- OEM STROKE
$464.95 -
HOT RODS Crankshaft Assembly 4017
HOT RODS
$502.95A properly assembled crankshaft is the foundation of reliable engine performance, and the HOT RODS 4017 delivers exactly that—factory-assembled and trued to OEM specifications for immediate installation. Whether you're rebuilding a worn motor or...H128X- SKU:
- H128X
- Availability:
- Ships Same Business Day
- Weight:
- 9.46 LBS
- UNITS:
- ASSEMBLY
- DISPLACEMENT:
- 250 CC
- MATERIAL:
- 4140 STEEL
- MODEL:
- 2-CYCLE
- STROKE LENGTH METRIC:
- 72.00 MM
- TYPE:
- OEM STROKE
- FEATURES:
- STANDARD CRANKSHAFT
- COLOR/FINISH:
- STEEL
- PRODUCT NAME:
- CRANKSHAFT ASSEMBLY
- RIDING STYLE:
- OFF-ROAD
$502.95 -
HOT RODS Crankshaft Assembly 4036
HOT RODS
$423.95If you're building a long-stroke engine for your ATV, a quality crankshaft assembly is the foundation of reliability and performance. The HOT RODS Crankshaft Assembly 4036 arrives completely assembled, trued to OEM specifications, and ready to...H125X- SKU:
- H125X
- Availability:
- Ships Same Business Day
- Weight:
- 6.20 LBS
- MODEL:
- 2-CYCLE
- PRODUCT NAME:
- CRANKSHAFT ASSEMBLY
- UNITS:
- ASSEMBLY
- COLOR/FINISH:
- STEEL
- MATERIAL:
- 4140 STEEL
- RIDING STYLE:
- OFF-ROAD
- STROKE LENGTH METRIC:
- 54.60 MM
- TYPE:
- OEM STROKE
- DISPLACEMENT:
- 125 CC
- FEATURES:
- STANDARD CRANKSHAFT
$423.95 -
HOT RODS Crankshaft Assembly 4034
HOT RODS
$278.95If you're serious about maximizing engine displacement and power on your ATV, a long-stroke crankshaft assembly is essential—and the HOT RODS 4034 delivers factory-proven reliability without the machine work typically required for these builds. This...H123- SKU:
- H123
- Availability:
- Ships Same Business Day
- Weight:
- 4.45 LBS
- PRODUCT NAME:
- CRANKSHAFT ASSEMBLY
- FEATURES:
- STANDARD CRANKSHAFT
- MODEL:
- 2-CYCLE
- TYPE:
- OEM STROKE
- COLOR/FINISH:
- STEEL
- DISPLACEMENT:
- 85 CC
- MATERIAL:
- 4140 STEEL
- UNITS:
- ASSEMBLY
- RIDING STYLE:
- OFF-ROAD
- STROKE LENGTH METRIC:
- 48.00 MM
$278.95 -
HOT RODS Crankshaft Assembly 4033
HOT RODS
$318.95If you're building or rebuilding a high-performance ATV engine, a quality crankshaft assembly is non-negotiable—it's the foundation of reliability and horsepower delivery. The HOT RODS Crankshaft Assembly 4033 arrives factory-assembled, trued to OEM...H122- SKU:
- H122
- Availability:
- Ships Same Business Day
- Weight:
- 4.50 LBS
- MODEL:
- 2-CYCLE
- PRODUCT NAME:
- CRANKSHAFT ASSEMBLY
- RIDING STYLE:
- OFF-ROAD
- STROKE LENGTH METRIC:
- 48.00 MM
- UNITS:
- ASSEMBLY
- COLOR/FINISH:
- STEEL
- DISPLACEMENT:
- 80 CC
- MATERIAL:
- 4140 STEEL
- FEATURES:
- STANDARD CRANKSHAFT
- TYPE:
- OEM STROKE
$318.95 -
HOT RODS Crankshaft Assembly 4016
HOT RODS
$292.95If you're serious about maximizing your ATV's engine performance, a quality crankshaft assembly is non-negotiable. The HOT RODS 4016 gives you a complete, factory-assembled unit that meets or exceeds OEM specifications without requiring additional...H119- SKU:
- H119
- Availability:
- Ships Same Business Day
- Weight:
- 4.50 LBS
- MODEL:
- 2-CYCLE
- PRODUCT NAME:
- CRANKSHAFT ASSEMBLY
- DISPLACEMENT:
- 80 CC TO 100 CC
- FEATURES:
- STANDARD CRANKSHAFT
- STROKE LENGTH METRIC:
- 45.80 MM
- TYPE:
- OEM STROKE
- COLOR/FINISH:
- STEEL
- MATERIAL:
- 4140 STEEL
- UNITS:
- ASSEMBLY
- RIDING STYLE:
- OFF-ROAD
$292.95 -
HOT RODS Crankshaft Assembly 4012
HOT RODS
$198.95If you're building a long-stroke engine for your ATV, you need a crankshaft assembly that won't compromise reliability or performance. The HOT RODS Crankshaft Assembly 4012 arrives factory-assembled, trued to OEM specifications, and ready to...H115- SKU:
- H115
- Availability:
- Ships Same Business Day
- Weight:
- 4.65 LBS
- MODEL:
- 2-CYCLE
- COLOR/FINISH:
- STEEL
- PRODUCT NAME:
- CRANKSHAFT ASSEMBLY
- DISPLACEMENT:
- 80 CC
- FEATURES:
- STANDARD CRANKSHAFT
- RIDING STYLE:
- OFF-ROAD
- STROKE LENGTH METRIC:
- 48.00 MM
- TYPE:
- OEM STROKE
- MATERIAL:
- 4140 STEEL
- UNITS:
- ASSEMBLY
$198.95 -
HOT RODS Crankshaft Assembly 4002
HOT RODS
$429.95If you're building a long-stroke engine for your ATV, you need a crankshaft assembly that's been engineered to handle the increased stress and deliver reliable power. The HOT RODS Crankshaft Assembly 4002 arrives factory-assembled and trued to OEM...H101- SKU:
- H101
- Availability:
- Ships Same Business Day
- Weight:
- 9.19 LBS
- MATERIAL:
- 4140 STEEL
- STROKE LENGTH METRIC:
- 72.00 MM
- UNITS:
- ASSEMBLY
- DISPLACEMENT:
- 250 CC
- FEATURES:
- STANDARD CRANKSHAFT
- MODEL:
- 2-CYCLE
- TYPE:
- OEM STROKE
- PRODUCT NAME:
- CRANKSHAFT ASSEMBLY
- RIDING STYLE:
- OFF-ROAD
- COLOR/FINISH:
- STEEL
$429.95
