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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WSM Crankshaft Assembly 010-1017WSM
WSM
$744.35A crankshaft assembly is the backbone of your engine's power delivery—any imbalance or wear directly compromises efficiency, reliability, and performance. The WSM 010-1017WSM is...09210224- SKU:
- 09210224
- Availability:
- Ships Same Business Day
- Weight:
- 20.95 LBS
- PRODUCT NAME:
- CRANKSHAFT ASSEMBLY
- MATERIAL:
- STEEL
- UNITS:
- KIT
- RIDING STYLE:
- WATERCRAFT
$744.35 -
WSM Crankshaft Assembly 010-1018WSM
WSM
$851.45A reliable crankshaft is the foundation of any solid engine build—it directly impacts power delivery, longevity, and overall drivetrain stability. The WSM 010-1018WSM is engineered to meet or exceed...09210225- SKU:
- 09210225
- Availability:
- Ships Same Business Day
- Weight:
- 25.20 LBS
- PRODUCT NAME:
- CRANKSHAFT ASSEMBLY
- MATERIAL:
- STEEL
- RIDING STYLE:
- WATERCRAFT
- UNITS:
- KIT
$851.45 -
WSM Crankshaft Assembly 010-1019WSM
WSM
$851.45A crankshaft assembly is the heart of your engine's reliability and power delivery—any imbalance or wear translates directly to performance loss and catastrophic failure. The WSM 010-1019WSM is...09210227- SKU:
- 09210227
- Availability:
- Ships Same Business Day
- Weight:
- 27.56 LBS
- MATERIAL:
- STEEL
- RIDING STYLE:
- WATERCRAFT
- PRODUCT NAME:
- CRANKSHAFT ASSEMBLY
- UNITS:
- KIT
$851.45 -
HOT RODS Crankshaft - OEM Stroke - Can-Am HR00063
HOT RODS
$592.95When your Can-Am crankshaft shows signs of wear or damage, a factory-trued replacement ensures you're back to OEM performance standards without compromise. This HOT RODS crankshaft maintains the...09210885- SKU:
- 09210885
- Availability:
- Ships Same Business Day
- Weight:
- 13.35 LBS
$592.95 -
HOT RODS Bottom End Kit - OE Crankshaft Replacement - Polaris HR00119
HOT RODS
$1,671.55A bottom-end rebuild demands precision components that won't compromise engine reliability or performance. This HOT RODS kit eliminates the guesswork by bundling OE-spec crankshaft replacement parts...09210898- SKU:
- 09210898
- Availability:
- Ships Same Business Day
- Weight:
- 24.35 LBS
$1,671.55 -
On Sale
Wossner Crankshaft Assembly for KTM 85 SX 2014-2017 Husqvarna TC85 2014-2017 CS2065-1
WOSSNER
MSRP: $382.95Now: $363.80Was: $382.95A worn or damaged crankshaft directly impacts engine reliability, power delivery, and longevity—especially in high-RPM small-displacement engines like the KTM 85 SX and Husqvarna TC85. This complete...09210914- SKU:
- 09210914
- Availability:
- Ships Same Business Day
- Weight:
- 4.48 LBS
MSRP: $382.95Now: $363.80Was: $382.95Qty in Cart: 0Quantity:Price:MSRP: $382.95Now: $363.80Was: $382.95Subtotal: -
On Sale
Wossner Crankshaft Assembly Yamaha YZ85 2019-2025 CS2072
WOSSNER
MSRP: $262.00Now: $248.90Was: $262.00Your YZ85's crankshaft assembly is the heartbeat of engine performance—when it's worn or damaged, you lose power delivery, reliability, and overall rideability. The Wossner CS2072 restores your...09210917- SKU:
- 09210917
- Availability:
- Ships Same Business Day
- Weight:
- 4.06 LBS
MSRP: $262.00Now: $248.90Was: $262.00 -
On Sale
Wossner Crankshaft Assembly Yamaha YZ250F 2003-2013 CS4005
WOSSNER
MSRP: $404.00Now: $383.80Was: $404.00The crankshaft assembly is the heart of your YZ250F's engine—worn or damaged components here directly translate to lost power, increased friction, and premature failure. This Wossner assembly...09210919- SKU:
- 09210919
- Availability:
- Ships Same Business Day
- Weight:
- 0.01 LBS
MSRP: $404.00Now: $383.80Was: $404.00Qty in Cart: 0Quantity:Price:MSRP: $404.00Now: $383.80Was: $404.00Subtotal: -
MOOSE RACING Crankcase Bearing and Seal Kit 24-1008
MOOSE RACING
$83.95A crankshaft bearing failure doesn't just sideline your engine—it can cause catastrophic internal damage that ends a season or a rebuild investment. The MOOSE RACING 24-1008 kit delivers OEM-quality...A241008- SKU:
- A241008
- Availability:
- Ships Same Business Day
- Weight:
- 0.80 LBS
- PRODUCT NAME:
- BEARING KIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- TYPE:
- CRANK
$83.95 -
MOOSE RACING Crankcase Bearing and Seal Kit 24-1027
MOOSE RACING
$89.95A worn crankshaft bearing or degraded seal can introduce metal-to-metal contact, excessive drag, and catastrophic engine failure—especially critical in high-RPM 2-stroke applications. The MOOSE...A241027- SKU:
- A241027
- Availability:
- Ships Same Business Day
- Weight:
- 1.40 LBS
- TYPE:
- CRANK
- PRODUCT NAME:
- BEARING KIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$89.95 -
MOOSE RACING Crankcase Bearing and Seal Kit 24-1009
MOOSE RACING
$93.95A worn crankshaft bearing or degraded seal will accelerate internal engine wear and compromise power delivery—especially critical for 2-stroke engines where lubrication tolerance is razor-thin. The...A241009- SKU:
- A241009
- Availability:
- Ships Same Business Day
- Weight:
- 1.25 LBS
- TYPE:
- CRANK
- PRODUCT NAME:
- BEARING KIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$93.95 -
MOOSE RACING Crankcase Bearing and Seal Kit 24-1014
MOOSE RACING
$69.95Your crankshaft bearings are the foundation of engine reliability—worn or inadequate bearings lead to excessive play, bearing knock, and catastrophic engine failure. The MOOSE RACING Crankcase...A241014- SKU:
- A241014
- Availability:
- Ships Same Business Day
- Weight:
- 0.70 LBS
- TYPE:
- CRANK
- PRODUCT NAME:
- BEARING KIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$69.95 -
MOOSE RACING Crankcase Bearing and Seal Kit 24-1015
MOOSE RACING
$72.95A worn or damaged crankshaft bearing will quickly cascade into catastrophic engine failure—seized cranks, metal debris in your oil, and a destroyed bottom end. The MOOSE RACING 24-1015 kit gives you...A241015- SKU:
- A241015
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- TYPE:
- CRANK
- PRODUCT NAME:
- BEARING KIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$72.95Qty in Cart: 0Quantity:Price:$72.95Subtotal: -
MOOSE RACING Crankcase Bearing and Seal Kit 24-1023
MOOSE RACING
$53.95A worn or failing crankshaft bearing assembly forces your engine to work harder, accelerates wear on adjacent components, and ultimately compromises reliability when you need it most. The MOOSE...A241023- SKU:
- A241023
- Availability:
- Ships Same Business Day
- Weight:
- 0.65 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- BEARING KIT
- TYPE:
- CRANK
$53.95Qty in Cart: 0Quantity:Price:$53.95Subtotal: -
MOOSE RACING Crankcase Bearing and Seal Kit 24-1003
MOOSE RACING
$77.95A worn or damaged crankshaft bearing is a ticking time bomb for engine reliability. The MOOSE RACING Crankcase Bearing and Seal Kit 24-1003 delivers OEM-quality precision bearings engineered to...A241003- SKU:
- A241003
- Availability:
- Ships Same Business Day
- Weight:
- 0.85 LBS
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- CRANK
- PRODUCT NAME:
- BEARING KIT
- UNITS:
- KIT
$77.95Qty in Cart: 0Quantity:Price:$77.95Subtotal: -
On Sale
ATHENA Crankshaft - Yamaha/Malaguti S410130320005
ATHENA
MSRP: $221.95Now: $200.00Was: $221.95Made of special steel and manufactured with CNC high-precision machinery, Standard stroke09210020- SKU:
- 09210020
- Availability:
- Ships Same Business Day
- Weight:
- 2.84 LBS
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- CRANKSHAFT
- UNITS:
- EACH
MSRP: $221.95Now: $200.00Was: $221.95Qty in Cart: 0Quantity:Price:MSRP: $221.95Now: $200.00Was: $221.95Subtotal: -
HOT RODS Crankshaft Kit CBK0008
HOT RODS
$662.95If you're building a high-performance engine or need a reliable crankshaft assembly that meets or exceeds OEM specifications, the HOT RODS Crankshaft Kit CBK0008 delivers the precision and durability...09210267- SKU:
- 09210267
- Availability:
- Ships Same Business Day
- Weight:
- 12.80 LBS
- TYPE:
- OEM
- UNITS:
- KIT
- PRODUCT NAME:
- CRANKSHAFT KIT
- RIDING STYLE:
- OFF-ROAD
$662.95Qty in Cart: 0Quantity:Price:$662.95Subtotal: -
Wiseco Crankshaft Kit for 2005-2007 Suzuki RM-Z450 WPC142
WISECO
$594.95A crankshaft is the backbone of your engine's reliability and performance—especially when pushing an RM-Z450 to its limits. Wiseco's factory-assembled kit delivers precision-engineered components...09210139- SKU:
- 09210139
- Availability:
- Ships Same Business Day
- Weight:
- 13.54 LBS
- FEATURES:
- INCLUDES BEARING AND GASKET
- MATERIAL:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- STROKE LENGTH METRIC:
- 62.80 MM
- TYPE:
- BOTTOM END
- PRODUCT NAME:
- CRANKSHAFT ASSEMBLY
- UNITS:
- KIT
$594.95Qty in Cart: 0Quantity:Price:$594.95Subtotal: -
Wiseco Crankshaft KTM 65 SX 2003-2008 WPC161A
WISECO
$329.95If you're rebuilding a KTM 65 SX or pushing your engine to its limits, the Wiseco WPC161A crankshaft kit delivers the precision and durability needed for reliable high-RPM operation. This complete...09210547- SKU:
- 09210547
- Availability:
- Ships Same Business Day
- Weight:
- 6.10 LBS
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
- PRODUCT NAME:
- CRANKSHAFT KIT
- STROKE LENGTH METRIC:
- 40.00 MM
$329.95Qty in Cart: 0Quantity:Price:$329.95Subtotal: -
HOT RODS Crankshaft Kit CBK0001
HOT RODS
$321.25If you're building a high-performance engine or rebuilding a worn crankshaft assembly, the HOT RODS Crankshaft Kit CBK0001 delivers factory-spec reliability with measurable performance gains over OEM...09210260- SKU:
- 09210260
- Availability:
- Ships Same Business Day
- Weight:
- 7.10 LBS
- TYPE:
- OEM
- PRODUCT NAME:
- CRANKSHAFT KIT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- KIT
$321.25
