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!
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- Price
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HOT RODS Crankshaft Assembly - OEM Stroke - Can-Am HR00064
HOT RODS
$1,034.95Your engine's crankshaft is the foundation of reliability and performance. A compromised crank means lost power, instability, and potential catastrophic failure. The HOT RODS Crankshaft Assembly...09210886- SKU:
- 09210886
- Availability:
- Ships Same Business Day
- Weight:
- 15.70 LBS
$1,034.95 -
HOT RODS Crankshaft Assembly - OEM Stroke - Polaris HR00027
HOT RODS
$1,006.95A crankshaft assembly is the backbone of your engine's reliability and performance—especially in high-demand racing applications where factory components often can't keep pace. The HOT RODS...09210887- SKU:
- 09210887
- Availability:
- Ships Same Business Day
- Weight:
- 15.30 LBS
$1,006.95 -
HOT RODS Bottom End Kit - OE Crankshaft Replacement - Honda HR00105
HOT RODS
$662.95A complete bottom-end rebuild requires precision components and meticulous attention to detail—this kit eliminates guesswork by bundling everything you need for a proper crankshaft replacement in one...09210889- SKU:
- 09210889
- Availability:
- Ships Same Business Day
- Weight:
- 13.50 LBS
$662.95 -
HOT RODS Bottom End Kit - OE Crankshaft Replacement - Polaris HR00108
HOT RODS
$1,671.55A complete bottom-end rebuild requires precision components and proper sealing to ensure reliability under load. This HOT RODS kit eliminates guesswork by combining OE-specification crankshaft...09210892- SKU:
- 09210892
- Availability:
- Ships Same Business Day
- Weight:
- 29.90 LBS
$1,671.55 -
HOT RODS Bottom End Kit - OE Crankshaft Replacement - Polaris HR00110
HOT RODS
$1,591.95A complete crankshaft replacement demands precision components and proper sealing—this kit eliminates the guesswork by bundling everything you need in one package. Whether you're rebuilding after...09210893- SKU:
- 09210893
- Availability:
- Ships Same Business Day
- Weight:
- 28.00 LBS
$1,591.95Qty in Cart: 0Quantity:Price:$1,591.95Subtotal: -
HOT RODS Bottom End Kit - OE Crankshaft Replacement - Polaris HR00111
HOT RODS
$1,591.95A complete bottom-end rebuild requires precision components and proper sealing—this kit eliminates the guesswork by bundling everything needed for a reliable crankshaft replacement. Whether you're...09210894- SKU:
- 09210894
- Availability:
- Ships Same Business Day
- Weight:
- 27.45 LBS
$1,591.95 -
HOT RODS Bottom End Kit - OE Crankshaft Replacement - Polaris HR00120
HOT RODS
$1,360.95A failed or worn crankshaft compromises engine reliability and performance across the board. This complete bottom end kit eliminates guesswork by bundling OE-spec components—main bearings, seals, and...09210899- SKU:
- 09210899
- Availability:
- Ships Same Business Day
- Weight:
- 24.05 LBS
$1,360.95 -
HOT RODS Crankshaft Kit - OE Crankshaft Replacement - Suzuki CBK0081
HOT RODS
$622.95A worn or damaged crankshaft compromises your entire engine's reliability and performance. The HOT RODS Crankshaft Kit delivers factory-spec precision with the added durability of professional-grade...09210328- SKU:
- 09210328
- Availability:
- Ships Same Business Day
- Weight:
- 9.10 LBS
$622.95Qty in Cart: 0Quantity:Price:$622.95Subtotal: -
HOT RODS Crankshaft Kit - OE Crankshaft Replacement - Kawasaki CBK0118
HOT RODS
$795.95A crankshaft failure means complete engine shutdown—and an expensive rebuild. The HOT RODS Crankshaft Kit gives you a factory-spec replacement that's assembled, inspected, and ready to bolt in,...09210355- SKU:
- 09210355
- Availability:
- Ships Same Business Day
- Weight:
- 13.35 LBS
$795.95Qty in Cart: 0Quantity:Price:$795.95Subtotal: -
HOT RODS Crankshaft - OEM Stroke - Polaris HR00046
HOT RODS
$1,104.95If you're running a Polaris engine that demands reliability on the track or trail, a properly balanced crankshaft is non-negotiable—it's the foundation that keeps your entire rotating assembly in...09210888- SKU:
- 09210888
- Availability:
- Ships Same Business Day
- Weight:
- 19.65 LBS
$1,104.95 -
HOT RODS Bottom End Kit - OE Crankshaft Replacement - Polaris HR00106
HOT RODS
$1,671.55A complete bottom-end rebuild demands precision components and comprehensive gasket coverage—this kit eliminates the guesswork by bundling everything you need for a professional crankshaft...09210890- SKU:
- 09210890
- Availability:
- Ships Same Business Day
- Weight:
- 27.80 LBS
$1,671.55 -
HOT RODS Bottom End Kit - OE Crankshaft Replacement - Polaris HR00107
HOT RODS
$1,671.55A complete bottom-end rebuild demands precision components and comprehensive gasket coverage—this kit eliminates sourcing individual parts and ensures compatibility across all critical sealing...09210891- SKU:
- 09210891
- Availability:
- Ships Same Business Day
- Weight:
- 27.90 LBS
$1,671.55 -
HOT RODS Bottom End Kit - OE Crankshaft Replacement - Polaris HR00118
HOT RODS
$1,671.55A bottom-end rebuild requires precision components and complete gasket coverage—cutting corners here compromises engine reliability and longevity. The HOT RODS Bottom End Kit eliminates guesswork by...09210897- SKU:
- 09210897
- Availability:
- Ships Same Business Day
- Weight:
- 24.30 LBS
$1,671.55 -
HOT RODS Bottom End Kit - OE Crankshaft Replacement - Polaris HR00117
HOT RODS
$1,591.95If you're planning a complete bottom-end rebuild on your Polaris, this kit eliminates the guesswork by bundling everything you need in one package. Rather than sourcing bearings, seals, and gaskets...09210896- SKU:
- 09210896
- Availability:
- Ships Same Business Day
- Weight:
- 24.85 LBS
$1,591.95 -
HOT RODS Bottom End Kit - OE Crankshaft Kit - Husqvarna | KTM HR00178
HOT RODS
$713.95A complete bottom-end rebuild demands precision components and proper sealing—this kit eliminates the guesswork by bundling everything you need for crankshaft installation in one package. Whether...09210951- SKU:
- 09210951
- Availability:
- Ships Same Business Day
- Weight:
- 12.10 LBS
$713.95Qty in Cart: 0Quantity:Price:$713.95Subtotal: -
On Sale
Wossner Crankshaft Assembly for KTM SX125 2016-2022 Husqvarna TC125 2016-2022 GasGas MC125 2021-2022 CS2070
WOSSNER
MSRP: $342.00Now: $324.90Was: $342.00A worn or damaged crankshaft assembly compromises power transfer, throttle response, and engine longevity—particularly critical in 2-stroke competition machines where precision clearances determine...09210879- SKU:
- 09210879
- Availability:
- Ships Same Business Day
- Weight:
- 6.25 LBS
MSRP: $342.00Now: $324.90Was: $342.00 -
On Sale
WOSSNER Crankshaft Assembly - Husaberg | Husqvarna | KTM CS2012
WOSSNER
MSRP: $342.00Now: $324.90Was: $342.00A worn or damaged crankshaft assembly compromises engine reliability and performance—especially critical in high-demand riding conditions where precision matters. The WOSSNER CS2012 delivers...09210880- SKU:
- 09210880
- Availability:
- Ships Same Business Day
- Weight:
- 6.95 LBS
MSRP: $342.00Now: $324.90Was: $342.00 -
On Sale
Wossner Crankshaft Assembly for Honda CRF250R 2010-2017 CS4001
WOSSNER
MSRP: $404.00Now: $383.80Was: $404.00The crankshaft is the heart of your engine—when it wears or fails, your CRF250R's performance suffers immediately. This Wossner assembly restores full power delivery and reliability with OEM-quality...09210881- SKU:
- 09210881
- Availability:
- Ships Same Business Day
- Weight:
- 8.49 LBS
MSRP: $404.00Now: $383.80Was: $404.00 -
On Sale
Wossner Crankshaft Assembly Kawasaki KX85 2006-2021 KX100 2006-2021 CS2005
WOSSNER
MSRP: $282.00Now: $267.90Was: $282.00A worn or damaged crankshaft assembly directly compromises your KX85 or KX100's reliability and power delivery. This Wossner complete assembly restores your engine to OEM-spec performance with...09210907- SKU:
- 09210907
- Availability:
- Ships Same Business Day
- Weight:
- 4.14 LBS
MSRP: $282.00Now: $267.90Was: $282.00 -
On Sale
Wossner Crankshaft Assembly Yamaha YZ85 2002-2018 CS2008
WOSSNER
MSRP: $262.00Now: $248.90Was: $262.00A worn or damaged crankshaft assembly directly impacts engine reliability, throttle response, and overall power delivery on your YZ85. This complete Wossner assembly restores your engine to factory...09210908- SKU:
- 09210908
- Availability:
- Ships Same Business Day
- Weight:
- 4.11 LBS
MSRP: $262.00Now: $248.90Was: $262.00Qty in Cart: 0Quantity:Price:MSRP: $262.00Now: $248.90Was: $262.00Subtotal:
