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 delivers OEM-equivalent durability while maintaining...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 Crankshaft Assembly delivers OEM-stroke performance while...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 package. Whether you're refreshing a high-mileage...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
$1,591.95A 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 replacement parts with HOT RODS main bearings and a...09210892- SKU:
- 09210892
- Availability:
- Ships Same Business Day
- Weight:
- 29.90 LBS
$1,591.95 -
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 catastrophic failure or performing preventive maintenance,...09210893- SKU:
- 09210893
- Availability:
- Ships Same Business Day
- Weight:
- 28.00 LBS
$1,591.95 -
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 refreshing a worn engine or building a fresh long-block,...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 a full gasket set—so you can execute a comprehensive...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 manufacturing, ensuring your Suzuki engine runs true...09210328- SKU:
- 09210328
- Availability:
- Ships Same Business Day
- Weight:
- 9.10 LBS
$622.95 -
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, restoring your Kawasaki to full performance without...09210355- SKU:
- 09210355
- Availability:
- Ships Same Business Day
- Weight:
- 13.35 LBS
$795.95 -
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 harmony. This OEM-stroke HOT RODS replacement eliminates...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
$1,591.95A 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 replacement. Whether you're refreshing a worn engine or preparing...09210890- SKU:
- 09210890
- Availability:
- Ships Same Business Day
- Weight:
- 27.80 LBS
$1,591.95 -
HOT RODS Bottom End Kit - OE Crankshaft Replacement - Polaris HR00107
HOT RODS
$1,591.95A complete bottom-end rebuild demands precision components and comprehensive gasket coverage—this kit eliminates sourcing individual parts and ensures compatibility across all critical sealing surfaces. Whether you're refreshing a worn crankshaft or...09210891- SKU:
- 09210891
- Availability:
- Ships Same Business Day
- Weight:
- 27.90 LBS
$1,591.95 -
HOT RODS Bottom End Kit - OE Crankshaft Replacement - Polaris HR00118
HOT RODS
$1,591.95A 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 bundling OE-spec main bearings, seals, and a full...09210897- SKU:
- 09210897
- Availability:
- Ships Same Business Day
- Weight:
- 24.30 LBS
$1,591.95 -
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 separately, you get HOT RODS-quality components...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
$679.95A 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 you're refreshing a two-stroke after hard use or...09210951- SKU:
- 09210951
- Availability:
- Ships Same Business Day
- Weight:
- 12.10 LBS
$679.95Qty in Cart: 0Quantity:Price:$679.95Subtotal: -
Wossner Crankshaft Assembly for KTM SX125 2016-2022 Husqvarna TC125 2016-2022 GasGas MC125 2021-2022 CS2070
WOSSNER
$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 performance and reliability. The Wossner CS2070 is...09210879- SKU:
- 09210879
- Availability:
- Ships Same Business Day
- Weight:
- 6.25 LBS
$342.00Qty in Cart: 0Quantity:Price:$342.00Subtotal: -
WOSSNER Crankshaft Assembly - Husaberg | Husqvarna | KTM CS2012
WOSSNER
$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 OEM-equivalent quality with tighter tolerances and superior...09210880- SKU:
- 09210880
- Availability:
- Ships Same Business Day
- Weight:
- 6.95 LBS
$342.00 -
Wossner Crankshaft Assembly for Honda CRF250R 2010-2017 CS4001
WOSSNER
$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 construction, letting you focus on riding instead of...09210881- SKU:
- 09210881
- Availability:
- Ships Same Business Day
- Weight:
- 8.49 LBS
$404.00 -
Wossner Crankshaft Assembly Kawasaki KX85 2006-2021 KX100 2006-2021 CS2005
WOSSNER
$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 factory-engineered precision, eliminating the need to source...09210907- SKU:
- 09210907
- Availability:
- Ships Same Business Day
- Weight:
- 4.14 LBS
$282.00 -
Wossner Crankshaft Assembly Yamaha YZ85 2002-2018 CS2008
WOSSNER
$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 specifications with precision-engineered components that...09210908- SKU:
- 09210908
- Availability:
- Ships Same Business Day
- Weight:
- 4.11 LBS
$262.00Qty in Cart: 0Quantity:Price:$262.00Subtotal:
