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 CBK0225
HOT RODS
$874.95If you're serious about maximizing displacement and low-end torque without a complete engine rebuild, a stroker crankshaft is one of the most cost-effective upgrades available. The HOT RODS CBK0225 arrives factory-assembled, trued to OEM specifications,...09210601- SKU:
- 09210601
- Availability:
- Ships Same Business Day
- Weight:
- 10.35 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- CRANKSHAFT
$874.95 -
HOT RODS Crankshaft Kit CBK0222
HOT RODS
$741.95A stroker crankshaft assembly transforms your engine's displacement and low-end torque delivery without requiring a complete rebuild. The HOT RODS CBK0222 arrives factory-assembled and trued to OEM specifications, meaning you're getting a precision...09210597- SKU:
- 09210597
- Availability:
- Ships Same Business Day
- Weight:
- 9.90 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- CRANKSHAFT
$741.95 -
HOT RODS Crankshaft Kit 4420
HOT RODS
$318.95If you're building a long-stroke engine for your ATV, a quality crankshaft assembly is non-negotiable—it's the foundation that translates fuel and air into reliable power. The HOT RODS Crankshaft Kit 4420 arrives factory-assembled, trued to OEM...09210518- SKU:
- 09210518
- Availability:
- Ships Same Business Day
- Weight:
- 3.00 LBS
- PRODUCT NAME:
- CRANKSHAFT ASSEMBLY
- DISPLACEMENT:
- 50 CC
- FEATURES:
- STANDARD CRANKSHAFT
- TYPE:
- OEM STROKE
- MODEL:
- 2-CYCLE
- COLOR/FINISH:
- STEEL
- MATERIAL:
- 4140 STEEL
- RIDING STYLE:
- OFF-ROAD
- STROKE LENGTH METRIC:
- 39.98 MM
- UNITS:
- ASSEMBLY
$318.95 -
HOT RODS Crankshaft Kit 4419
HOT RODS
$343.95If you're running a long-stroke build on your ATV, the HOT RODS Crankshaft Kit 4419 eliminates guesswork and machine work by delivering a factory-assembled, trued crankshaft paired with proven connecting rods and bearings. This complete assembly meets or...09210517- SKU:
- 09210517
- Availability:
- Ships Same Business Day
- Weight:
- 4.50 LBS
- COLOR/FINISH:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- MATERIAL:
- 4140 STEEL
- UNITS:
- ASSEMBLY
- PRODUCT NAME:
- CRANKSHAFT ASSEMBLY
- DISPLACEMENT:
- 85 CC TO 100 CC
- FEATURES:
- STANDARD CRANKSHAFT
- MODEL:
- 2-CYCLE
- STROKE LENGTH METRIC:
- 45.80 MM
- TYPE:
- OEM STROKE
$343.95 -
HOT RODS Crankshaft Assembly 4415
HOT RODS
$436.95If you're building a high-performance ATV engine or planning a long-stroke conversion, a quality crankshaft assembly is non-negotiable—it's the foundation that translates power reliably to the track. The HOT RODS 4415 arrives factory-assembled, trued to...09210512- SKU:
- 09210512
- Availability:
- Ships Same Business Day
- Weight:
- 9.85 LBS
- MATERIAL:
- 4140 STEEL
- STROKE LENGTH METRIC:
- 62.10 MM
- UNITS:
- ASSEMBLY
- MODEL:
- 4-CYCLE
- COLOR/FINISH:
- STEEL
- DISPLACEMENT:
- 450 CC
- FEATURES:
- STANDARD CRANKSHAFT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- OEM STROKE
- PRODUCT NAME:
- CRANKSHAFT ASSEMBLY
$436.95 -
HOT RODS Crankshaft Assembly 4401
HOT RODS
$383.95If you're looking to maximize displacement and power output in your ATV without extensive machine work, the HOT RODS Crankshaft Assembly 4401 delivers a complete long-stroke solution that's ready to bolt in. This factory-assembled unit comes pre-trued to...09210510- SKU:
- 09210510
- Availability:
- Ships Same Business Day
- Weight:
- 2.90 LBS
- COLOR/FINISH:
- STEEL
- MATERIAL:
- 4140 STEEL
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- ASSEMBLY
- MODEL:
- 2-CYCLE
- PRODUCT NAME:
- CRANKSHAFT ASSEMBLY
- DISPLACEMENT:
- 50 CC
- FEATURES:
- STANDARD CRANKSHAFT
- TYPE:
- OEM STROKE
- STROKE LENGTH METRIC:
- 39.96 MM
$383.95 -
HOT RODS Crankshaft Assembly 4084
HOT RODS
$543.95If you're building a high-performance ATV engine, a quality crankshaft assembly is non-negotiable—it's the foundation that transfers power reliably under extreme conditions. The HOT RODS 4084 arrives factory-assembled and pre-trued to OEM specifications,...09210509- SKU:
- 09210509
- Availability:
- Ships Same Business Day
- Weight:
- 9.83 LBS
- DISPLACEMENT:
- 450 CC
- FEATURES:
- STANDARD CRANKSHAFT
- MODEL:
- 4-CYCLE
- TYPE:
- OEM STROKE
- PRODUCT NAME:
- CRANKSHAFT ASSEMBLY
- MATERIAL:
- 4140 STEEL
- STROKE LENGTH METRIC:
- 62.10 MM
- UNITS:
- ASSEMBLY
- COLOR/FINISH:
- STEEL
- RIDING STYLE:
- OFF-ROAD
$543.95 -
HOT RODS Crankshaft Assembly 4023
HOT RODS
$450.95If you're running a high-revving ATV engine and demand reliability without compromise, a properly assembled crankshaft is non-negotiable. The HOT RODS 4023 arrives factory-assembled and trued to OEM specifications, eliminating guesswork and saving you...09210508- SKU:
- 09210508
- Availability:
- Ships Same Business Day
- Weight:
- 4.75 LBS
- PRODUCT NAME:
- CRANKSHAFT ASSEMBLY
- STROKE LENGTH METRIC:
- 48.90 MM
- FEATURES:
- STANDARD CRANKSHAFT
- TYPE:
- OEM STROKE
- MODEL:
- 2-CYCLE
- COLOR/FINISH:
- STEEL
- DISPLACEMENT:
- 85 CC
- MATERIAL:
- 4140 STEEL
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- ASSEMBLY
$450.95 -
HOT RODS Crankshaft Kit CBK0190
HOT RODS
$476.95If you're serious about maximizing displacement and low-end torque, the HOT RODS Crankshaft Kit CBK0190 delivers the stroke geometry you need to build real power. Factory-assembled and pre-checked to OEM specifications, this complete crankshaft and...09210507- SKU:
- 09210507
- Availability:
- Ships Same Business Day
- Weight:
- 4.50 LBS
- PRODUCT NAME:
- CRANKSHAFT KIT
- TYPE:
- OEM
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$476.95 -
HOT RODS Crankshaft - Stroker 4129
HOT RODS
$247.95A stroker crankshaft fundamentally transforms your ATV's engine by increasing displacement and low-end torque without requiring extensive machine work. Hot Rods' purpose-built stroker design eliminates the guesswork and fabrication costs associated with...09210460- SKU:
- 09210460
- Availability:
- Ships Same Business Day
- Weight:
- 7.00 LBS
- DISPLACEMENT:
- 262 CC
- FEATURES:
- HEAVY DUTY CRANKSHAFT
- MATERIAL:
- 4140 STEEL
- COLOR/FINISH:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- STROKE LENGTH:
- 57,80 MM
- TYPE:
- STROKER
- MODEL:
- 4-CYCLE
- UNITS:
- ASSEMBLY
- PRODUCT NAME:
- CRANKSHAFT ASSEMBLY
- STROKE LENGTH METRIC:
- 57.80 MM
$247.95Qty in Cart: 0Quantity:Price:$247.95Subtotal: -
HOT RODS Crankshaft 4019
HOT RODS
$556.95If you're serious about maximizing displacement and power in your ATV, a long-stroke crankshaft is one of the most effective upgrades available. The HOT RODS 4019 delivers factory-assembled reliability with the durability to handle aggressive riding and...09210457- SKU:
- 09210457
- Availability:
- Ships Same Business Day
- Weight:
- 9.81 LBS
- PRODUCT NAME:
- CRANKSHAFT ASSEMBLY
- MODEL:
- 4-CYCLE
- COLOR/FINISH:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- OEM STROKE
- DISPLACEMENT:
- 450 CC
- FEATURES:
- HEAVY DUTY CRANKSHAFT
- MATERIAL:
- 4140 STEEL
- STROKE LENGTH METRIC:
- 62.10 MM
- UNITS:
- ASSEMBLY
$556.95 -
HOT RODS Crankshaft Kit CBK0127
HOT RODS
$795.95If you're building a high-performance engine or restoring a classic with modern reliability, the HOT RODS Crankshaft Kit CBK0127 delivers factory-true specifications with components engineered to meet or exceed OEM performance standards. This complete...09210361- SKU:
- 09210361
- Availability:
- Ships Same Business Day
- Weight:
- 9.90 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- CRANKSHAFT KIT
- TYPE:
- OEM
$795.95Qty in Cart: 0Quantity:Price:$795.95Subtotal: -
HOT RODS Crankshaft Kit CBK0126
HOT RODS
$595.95If you're building a high-performance engine or restoring a classic, the HOT RODS Crankshaft Kit CBK0126 delivers the reliability of OEM specifications with the durability to handle sustained power increases. This factory-assembled complete crankshaft...09210360- SKU:
- 09210360
- Availability:
- Ships Same Business Day
- Weight:
- 10.49 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- CRANKSHAFT KIT
- TYPE:
- OEM
$595.95 -
HOT RODS Crankshaft Kit CBK0117
HOT RODS
$874.95If you're building a high-performance engine or restoring a stroker application, the HOT RODS Crankshaft Kit CBK0117 delivers the precision and durability you need to handle serious power. Factory-assembled and engineered to meet or exceed OEM...09210354- SKU:
- 09210354
- Availability:
- Ships Same Business Day
- Weight:
- 10.21 LBS
- TYPE:
- OEM
- UNITS:
- KIT
- PRODUCT NAME:
- CRANKSHAFT KIT
- RIDING STYLE:
- OFF-ROAD
$874.95 -
HOT RODS Crankshaft Kit CBK0111
HOT RODS
$569.95If you're building a high-performance engine or need a direct replacement for a worn crankshaft, the HOT RODS CBK0111 delivers factory-matched specifications with the durability to handle increased boost and cylinder pressure. This complete assembly...09210352- SKU:
- 09210352
- Availability:
- Ships Same Business Day
- Weight:
- 8.30 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- CRANKSHAFT KIT
- TYPE:
- OEM
$569.95 -
HOT RODS Crankshaft Kit CBK0110
HOT RODS
$768.95If you're building a high-performance engine or restoring a race-proven platform, the HOT RODS Crankshaft Kit CBK0110 delivers factory-matched precision with performance credentials that rival or exceed OEM specifications. This complete assembly arrives...09210351- SKU:
- 09210351
- Availability:
- Ships Same Business Day
- Weight:
- 12.75 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- CRANKSHAFT KIT
- TYPE:
- OEM
$768.95 -
HOT RODS Crankshaft Kit CBK0108
HOT RODS
$622.95If you're building a high-performance engine or restoring a classic with upgraded displacement, the HOT RODS Crankshaft Kit CBK0108 delivers the strength and precision you need to handle increased power and boost. This factory-assembled stroker crank is...09210349- SKU:
- 09210349
- Availability:
- Ships Same Business Day
- Weight:
- 6.85 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- CRANKSHAFT KIT
- TYPE:
- OEM
$622.95Qty in Cart: 0Quantity:Price:$622.95Subtotal: -
HOT RODS Crankshaft Kit CBK0107
HOT RODS
$595.95If you're building a high-performance engine or restoring a classic with serious power ambitions, the HOT RODS Crankshaft Kit CBK0107 gives you factory-spec reliability paired with upgraded durability for demanding applications. This complete assembly...09210348- SKU:
- 09210348
- Availability:
- Ships Same Business Day
- Weight:
- 6.84 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- CRANKSHAFT KIT
- TYPE:
- OEM
$595.95 -
HOT RODS Crankshaft Kit CBK0105
HOT RODS
$768.95If you're building a high-performance engine or restoring a classic with serious power goals, the HOT RODS Crankshaft Kit CBK0105 delivers the durability and precision you need without compromise. Factory-assembled and true to OEM specifications, this...09210347- SKU:
- 09210347
- Availability:
- Ships Same Business Day
- Weight:
- 14.05 LBS
- UNITS:
- KIT
- PRODUCT NAME:
- CRANKSHAFT KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- OEM
$768.95 -
HOT RODS Crankshaft Kit CBK0104
HOT RODS
$264.95A stroker crankshaft fundamentally increases your engine's displacement and torque output, delivering the low-end power and sustained performance necessary for competitive racing or high-demand builds. The HOT RODS CBK0104 arrives factory-assembled and...09210346- SKU:
- 09210346
- Availability:
- Ships Same Business Day
- Weight:
- 7.15 LBS
- PRODUCT NAME:
- CRANKSHAFT KIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- TYPE:
- OEM
$264.95
