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
-
MOOSE RACING Crankcase Bearing and Seal Kit 24-1006
MOOSE RACING
$62.95Precision crank bearings, Kits contain right and left crankshaft bearings; 2-stroke kits contain outer seals, Seals designed with a fluorocarbon lip to reduce dry start friction on 2-stroke engines, 4-stroke crank bearings do not include sealsA241006- SKU:
- A241006
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- UNITS:
- KIT
- PRODUCT NAME:
- BEARING KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CRANK
$62.95 -
MOOSE RACING Crankcase Bearing and Seal Kit 24-1026
MOOSE RACING
$85.95Precision crank bearings, Kits contain right and left crankshaft bearings; 2-stroke kits contain outer seals, Seals designed with a fluorocarbon lip to reduce dry start friction on 2-stroke engines, 4-stroke crank bearings do not include sealsA241026- SKU:
- A241026
- Availability:
- Ships Same Business Day
- Weight:
- 1.05 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- TYPE:
- CRANK
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- PRODUCT NAME:
- BEARING KIT
$85.95 -
MOOSE RACING Crankcase Bearing and Seal Kit 24-1028
MOOSE RACING
$94.95Precision crank bearings, Kits contain right and left crankshaft bearings; 2-stroke kits contain outer seals, Seals designed with a fluorocarbon lip to reduce dry start friction on 2-stroke engines, 4-stroke crank bearings do not include sealsA241028- SKU:
- A241028
- Availability:
- Ships Same Business Day
- Weight:
- 1.40 LBS
- PRODUCT NAME:
- BEARING KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CRANK
- UNITS:
- KIT
$94.95 -
MOOSE RACING Crankcase Bearing and Seal Kit 24-1010
MOOSE RACING
$85.95Precision crank bearings, Kits contain right and left crankshaft bearings; 2-stroke kits contain outer seals, Seals designed with a fluorocarbon lip to reduce dry start friction on 2-stroke engines, 4-stroke crank bearings do not include sealsA241010- SKU:
- A241010
- Availability:
- Ships Same Business Day
- Weight:
- 1.35 LBS
- PRODUCT NAME:
- BEARING KIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- TYPE:
- CRANK
$85.95 -
MOOSE RACING Crankcase Bearing and Seal Kit 24-1011
MOOSE RACING
$109.95Precision crank bearings, Kits contain right and left crankshaft bearings; 2-stroke kits contain outer seals, Seals designed with a fluorocarbon lip to reduce dry start friction on 2-stroke engines, 4-stroke crank bearings do not include sealsA241011- SKU:
- A241011
- Availability:
- Ships Same Business Day
- Weight:
- 1.65 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- TYPE:
- CRANK
- PRODUCT NAME:
- BEARING KIT
$109.95Qty in Cart: 0Quantity:Price:$109.95Subtotal: -
MOOSE RACING Crankcase Bearing and Seal Kit 24-1016
MOOSE RACING
$92.95Precision crank bearings, Kits contain right and left crankshaft bearings; 2-stroke kits contain outer seals, Seals designed with a fluorocarbon lip to reduce dry start friction on 2-stroke engines, 4-stroke crank bearings do not include sealsA241016- SKU:
- A241016
- Availability:
- Ships Same Business Day
- Weight:
- 0.85 LBS
- PRODUCT NAME:
- BEARING KIT
- TYPE:
- CRANK
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$92.95 -
MOOSE RACING Crankcase Bearing and Seal Kit 24-1021
MOOSE RACING
$103.95Precision crank bearings, Kits contain right and left crankshaft bearings; 2-stroke kits contain outer seals, Seals designed with a fluorocarbon lip to reduce dry start friction on 2-stroke engines, 4-stroke crank bearings do not include sealsA241021- SKU:
- A241021
- Availability:
- Ships Same Business Day
- Weight:
- 1.35 LBS
- PRODUCT NAME:
- BEARING KIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- TYPE:
- CRANK
$103.95 -
MOOSE RACING Crankcase Bearing and Seal Kit 24-1024
MOOSE RACING
$75.95Precision crank bearings, Kits contain right and left crankshaft bearings; 2-stroke kits contain outer seals, Seals designed with a fluorocarbon lip to reduce dry start friction on 2-stroke engines, 4-stroke crank bearings do not include sealsA241024- SKU:
- A241024
- Availability:
- Ships Same Business Day
- Weight:
- 0.90 LBS
- UNITS:
- KIT
- PRODUCT NAME:
- BEARING KIT
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CRANK
$75.95 -
MOOSE RACING Crankcase Bearing and Seal Kit 24-1025
MOOSE RACING
$76.95Precision crank bearings, Kits contain right and left crankshaft bearings; 2-stroke kits contain outer seals, Seals designed with a fluorocarbon lip to reduce dry start friction on 2-stroke engines, 4-stroke crank bearings do not include sealsA241025- SKU:
- A241025
- Availability:
- Ships Same Business Day
- Weight:
- 0.85 LBS
- TYPE:
- CRANK
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- BEARING KIT
$76.95 -
WSM Rotary Valve Gear 010-450
WSM
$43.10Gear for Sea-Doo rotary valves010450- SKU:
- 010450
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- UNITS:
- EACH
- PRODUCT NAME:
- GEAR
- RIDING STYLE:
- WATERCRAFT
- TYPE:
- ROTARY VALVE
$43.10 -
WSM Rotary Valve Shaft 010-455
WSM
$82.80Rotary Valve Shaft for Sea-Doo models010455- SKU:
- 010455
- Availability:
- Ships Same Business Day
- Weight:
- 0.40 LBS
- MATERIAL:
- STEEL
- PRODUCT NAME:
- SHAFT
- RIDING STYLE:
- WATERCRAFT
- TYPE:
- ROTARY VALVE
- UNITS:
- EACH
$82.80 -
MOOSE RACING Crankcase Bearing and Seal Kit 24-1029
MOOSE RACING
$91.95Precision crank bearings, Kits contain right and left crankshaft bearings; 2-stroke kits contain outer seals, Seals designed with a fluorocarbon lip to reduce dry start friction on 2-stroke engines, 4-stroke crank bearings do not include sealsA241029- SKU:
- A241029
- Availability:
- Ships Same Business Day
- Weight:
- 1.40 LBS
- PRODUCT NAME:
- BEARING KIT
- UNITS:
- KIT
- TYPE:
- CRANK
- RIDING STYLE:
- OFF-ROAD
$91.95 -
MOOSE RACING Crankcase Bearing and Seal Kit 24-1030
MOOSE RACING
$83.95Precision crank bearings, Kits contain right and left crankshaft bearings; 2-stroke kits contain outer seals, Seals designed with a fluorocarbon lip to reduce dry start friction on 2-stroke engines, 4-stroke crank bearings do not include sealsA241030- SKU:
- A241030
- Availability:
- Ships Same Business Day
- Weight:
- 1.48 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CRANK
- UNITS:
- KIT
- PRODUCT NAME:
- BEARING KIT
$83.95 -
MOOSE RACING Crankcase Bearing and Seal Kit 24-1002
MOOSE RACING
$76.95Precision crank bearings, Kits contain right and left crankshaft bearings; 2-stroke kits contain outer seals, Seals designed with a fluorocarbon lip to reduce dry start friction on 2-stroke engines, 4-stroke crank bearings do not include sealsA241002- SKU:
- A241002
- Availability:
- Ships Same Business Day
- Weight:
- 0.80 LBS
- TYPE:
- CRANK
- PRODUCT NAME:
- BEARING KIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$76.95 -
MOOSE RACING Crankcase Bearing and Seal Kit 24-1004
MOOSE RACING
$85.95Precision crank bearings, Kits contain right and left crankshaft bearings; 2-stroke kits contain outer seals, Seals designed with a fluorocarbon lip to reduce dry start friction on 2-stroke engines, 4-stroke crank bearings do not include sealsA241004- SKU:
- A241004
- Availability:
- Ships Same Business Day
- Weight:
- 1.40 LBS
- TYPE:
- CRANK
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- BEARING KIT
$85.95 -
ATHENA Crankcase - Yamaha S410130320004
ATHENA
$221.95Made of special steel and manufactured with CNC high-precision machinery, Standard stroke09210019- SKU:
- 09210019
- Availability:
- Ships Same Business Day
- Weight:
- 2.90 LBS
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- CRANKSHAFT
- UNITS:
- EACH
$221.95 -
ATHENA Crankcase - Yamaha YZ85 S410485320002
ATHENA
$171.95Made of special steel and manufactured with CNC high-precision machinery, Standard stroke09210589- SKU:
- 09210589
- Availability:
- Ships Same Business Day
- Weight:
- 4.16 LBS
- UNITS:
- EACH
- PRODUCT NAME:
- CRANKSHAFT
- RIDING STYLE:
- OFF-ROAD
$171.95 -
HOT RODS Crankshaft - Stroker 4199
HOT RODS
$202.95Hot Rods has developed six long-stroke applications for ATVs, Special pistons for TRX400EX, KFX/LTZ 400, Banshee, Warrior and Raptor make these installations simple by avoiding machine work and parts typically required for long-stroke engines09210220- SKU:
- 09210220
- Availability:
- Ships Same Business Day
- Weight:
- 9.30 LBS
- FEATURES:
- HEAVY DUTY CRANKSHAFT
- MATERIAL:
- 4140 STEEL
- MODEL:
- 4-CYCLE
- STROKE LENGTH:
- 56,60 MM
- UNITS:
- ASSEMBLY
- COLOR/FINISH:
- STEEL
- DISPLACEMENT:
- 263 CC
- RIDING STYLE:
- OFF-ROAD
- STROKE LENGTH METRIC:
- 56.60 MM
- TYPE:
- STROKER
- PRODUCT NAME:
- CRANKSHAFT ASSEMBLY
$202.95 -
HOT RODS Crankshaft Kit 4427
HOT RODS
$515.95Assembly 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...09210783- SKU:
- 09210783
- Availability:
- Ships Same Business Day
- Weight:
- 7.05 LBS
- DISPLACEMENT:
- 250 CC
- MATERIAL:
- 4140 STEEL
- STROKE LENGTH METRIC:
- 53.60 MM
- TYPE:
- OEM STROKE
- FEATURES:
- STANDARD CRANKSHAFT
- RIDING STYLE:
- OFF-ROAD
- MODEL:
- 4-CYCLE
- COLOR/FINISH:
- STEEL
- PRODUCT NAME:
- CRANKSHAFT ASSEMBLY
- UNITS:
- ASSEMBLY
$515.95 -
HOT RODS Crankshaft Kit 4428
HOT RODS
$477.95Assembly 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...09210784- SKU:
- 09210784
- Availability:
- Ships Same Business Day
- Weight:
- 9.85 LBS
- FEATURES:
- STANDARD CRANKSHAFT
- MODEL:
- 4-CYCLE
- DISPLACEMENT:
- 450 CC
- MATERIAL:
- 4140 STEEL
- TYPE:
- OEM STROKE
- PRODUCT NAME:
- CRANKSHAFT ASSEMBLY
- RIDING STYLE:
- OFF-ROAD
- COLOR/FINISH:
- STEEL
- STROKE LENGTH METRIC:
- 62.10 MM
- UNITS:
- ASSEMBLY
$477.95
