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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- Quantity
- Price
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On Sale
Wossner Crankshaft Assembly Honda CR125R 1990-2007 CS2009
WOSSNER
MSRP: $342.00Now: $324.90Was: $342.00The crankshaft is the heart of your engine—when it fails or wears, your CR125R loses power, reliability, and precision. This Wossner assembly restores full performance with a CNC-precision...09210909- SKU:
- 09210909
- Availability:
- Ships Same Business Day
- Weight:
- 6.06 LBS
MSRP: $342.00Now: $324.90Was: $342.00 -
On Sale
Wossner Crankshaft Assembly Yamaha YZ125 2005-2021 YZ125X 2020-2022 CS2018
WOSSNER
MSRP: $342.00Now: $324.90Was: $342.00A worn or damaged crankshaft directly compromises engine performance, reliability, and longevity. This Wossner assembly restores factory specifications and efficiency without the need for individual...09210911- SKU:
- 09210911
- Availability:
- Ships Same Business Day
- Weight:
- 6.05 LBS
MSRP: $342.00Now: $324.90Was: $342.00Qty in Cart: 0Quantity:Price:MSRP: $342.00Now: $324.90Was: $342.00Subtotal: -
On Sale
Wossner Crankshaft Assembly Yamaha YZ250 2003-2024 CS2028
WOSSNER
MSRP: $482.95Now: $458.80Was: $482.95A worn or damaged crankshaft directly compromises your YZ250's power delivery, throttle response, and engine reliability. The Wossner CS2028 restores full performance potential with...09210912- SKU:
- 09210912
- Availability:
- Ships Same Business Day
- Weight:
- 9.00 LBS
MSRP: $482.95Now: $458.80Was: $482.95 -
On Sale
Wossner Crankshaft Assembly Gas Gas MC 65 2021-2022 CS2055
WOSSNER
MSRP: $282.00Now: $267.90Was: $282.00A worn or damaged crankshaft directly compromises engine efficiency, throttle response, and overall reliability—especially in high-demand 2-stroke applications. The Wossner CS2055 restores your Gas...09210913- SKU:
- 09210913
- Availability:
- Ships Same Business Day
- Weight:
- 3.97 LBS
MSRP: $282.00Now: $267.90Was: $282.00Qty in Cart: 0Quantity:Price:MSRP: $282.00Now: $267.90Was: $282.00Subtotal: -
On Sale
Wossner Crankshaft Assembly KTM 85 SX 2018-2025 CS2065-2
WOSSNER
MSRP: $382.95Now: $363.80Was: $382.95Your KTM 85 SX's crankshaft is the heartbeat of engine performance—worn bearings and play in the connecting rod rob you of power, throttle response, and reliability when you need it most. The Wossner...09210915- SKU:
- 09210915
- Availability:
- Ships Same Business Day
- Weight:
- 4.38 LBS
MSRP: $382.95Now: $363.80Was: $382.95 -
On Sale
Wossner Crankshaft Assembly Yamaha YZ65 2018-2025 CS2071
WOSSNER
MSRP: $262.00Now: $248.90Was: $262.00A worn or damaged crankshaft directly compromises engine reliability and performance—especially critical on a high-revving YZ65 where precise reciprocating motion is essential. The Wossner CS2071...09210916- SKU:
- 09210916
- Availability:
- Ships Same Business Day
- Weight:
- 3.61 LBS
MSRP: $262.00Now: $248.90Was: $262.00 -
On Sale
Wossner Crankshaft Assembly Yamaha YZ250F 2014-2021 CS4072
WOSSNER
MSRP: $404.00Now: $383.80Was: $404.00The CS4072 crankshaft assembly is a precision-engineered replacement that restores your YZ250F's bottom-end reliability and maintains factory performance specifications. Whether you're rebuilding...09210921- SKU:
- 09210921
- Availability:
- Ships Same Business Day
- Weight:
- 7.00 LBS
MSRP: $404.00Now: $383.80Was: $404.00 -
On Sale
VINTCO Crankshaft Assembly - Honda CR2005
VINTCO
MSRP: $352.95Now: $328.24Was: $352.95A crankshaft is the backbone of engine performance—it converts combustion energy into usable power, and any weakness in this critical component directly impacts reliability and output. The VINTCO...09210902- SKU:
- 09210902
- Availability:
- Ships Same Business Day
- Weight:
- 6.11 LBS
MSRP: $352.95Now: $328.24Was: $352.95 -
On Sale
VINTCO Crankshaft Assembly - Honda CR2006
VINTCO
MSRP: $352.95Now: $328.24Was: $352.95A worn or damaged crankshaft compromises engine reliability and performance across the board—power delivery suffers, friction increases, and catastrophic failure becomes a real risk. The VINTCO...09210903- SKU:
- 09210903
- Availability:
- Ships Same Business Day
- Weight:
- 6.16 LBS
MSRP: $352.95Now: $328.24Was: $352.95 -
On Sale
VINTCO Crankshaft Assembly - Honda CR2004
VINTCO
MSRP: $384.95Now: $358.00Was: $384.95A crankshaft assembly is the backbone of your engine's power delivery—it converts the linear force of your pistons into rotational energy that drives your vehicle. The VINTCO CR2004 is engineered...09210904- SKU:
- 09210904
- Availability:
- Ships Same Business Day
- Weight:
- 7.56 LBS
MSRP: $384.95Now: $358.00Was: $384.95 -
On Sale
VINTCO Crankshaft Assembly - Honda CR2008
VINTCO
MSRP: $384.95Now: $358.00Was: $384.95A crankshaft is the foundation of any engine's reliability and longevity. The VINTCO CR2008 assembly pairs a precision-forged steel crankshaft with a heavy-duty connecting rod and integrated wrist...09210905- SKU:
- 09210905
- Availability:
- Ships Same Business Day
- Weight:
- 8.81 LBS
MSRP: $384.95Now: $358.00Was: $384.95 -
HOT RODS Crankshaft Assembly - OEM Stroke - Gas Gas | Husqvarna | KTM HR00125
HOT RODS
$531.95A crankshaft assembly is the heart of your engine's bottom end—it converts combustion force into rotational power. Hot Rods delivers OEM-stroke precision without compromise, factory-assembled and...09210923- SKU:
- 09210923
- Availability:
- Ships Same Business Day
- Weight:
- 8.75 LBS
$531.95 -
On Sale
VINTCO Crankshaft Assembly - Honda CR2012
VINTCO
MSRP: $423.95Now: $394.27Was: $423.95A crankshaft is the backbone of your engine's reliability—this VINTCO assembly delivers the durability and precision required for consistent performance under sustained load. If you're rebuilding,...09210926- SKU:
- 09210926
- Availability:
- Ships Same Business Day
- Weight:
- 11.00 LBS
MSRP: $423.95Now: $394.27Was: $423.95 -
On Sale
VINTCO Crankshaft Assembly - Honda CR2013
VINTCO
MSRP: $423.95Now: $394.27Was: $423.95A failing or worn crankshaft compromises engine reliability and power delivery—replacing it with a precision-engineered assembly restores the structural integrity your Honda needs for consistent...09210927- SKU:
- 09210927
- Availability:
- Ships Same Business Day
- Weight:
- 10.93 LBS
MSRP: $423.95Now: $394.27Was: $423.95 -
On Sale
VINTCO Crankshaft Assembly - Kawasaki CR2015
VINTCO
MSRP: $416.95Now: $387.76Was: $416.95A crankshaft assembly is the backbone of your engine's reciprocating motion—it converts combustion force into rotational power that drives your wheels. The VINTCO CR2015 pairs precision engineering...09210928- SKU:
- 09210928
- Availability:
- Ships Same Business Day
- Weight:
- 10.73 LBS
MSRP: $416.95Now: $387.76Was: $416.95 -
On Sale
VINTCO Crankshaft Assembly - Maico CR2011
VINTCO
MSRP: $416.95Now: $387.76Was: $416.95A quality crankshaft assembly is the foundation of engine reliability and power delivery—especially in high-stress racing applications where failure isn't an option. The VINTCO CR2011 combines...09210925- SKU:
- 09210925
- Availability:
- Ships Same Business Day
- Weight:
- 11.96 LBS
MSRP: $416.95Now: $387.76Was: $416.95 -
On Sale
VINTCO Crankshaft Assembly - Honda CR2017
VINTCO
MSRP: $245.95Now: $228.73Was: $245.95A compromised crankshaft compromises everything downstream—power delivery, engine longevity, and reliability. The VINTCO CR2017 forged steel assembly restores full engine integrity with precision...09210947- SKU:
- 09210947
- Availability:
- Ships Same Business Day
- Weight:
- 4.88 LBS
MSRP: $245.95Now: $228.73Was: $245.95 -
On Sale
VINTCO Crankshaft Assembly - Kawasaki CR2019
VINTCO
MSRP: $389.95Now: $362.65Was: $389.95A crankshaft is the backbone of your engine's reliability—any weakness here compromises power delivery and longevity. The VINTCO CR2019 is engineered to Kawasaki OEM specifications using heavy-duty...09210948- SKU:
- 09210948
- Availability:
- Ships Same Business Day
- Weight:
- 6.82 LBS
MSRP: $389.95Now: $362.65Was: $389.95Qty in Cart: 0Quantity:Price:MSRP: $389.95Now: $362.65Was: $389.95Subtotal: -
On Sale
Wossner Crankshaft Assembly Yamaha YZ125 2022-2025 CS2077
WOSSNER
MSRP: $342.00Now: $324.90Was: $342.00A worn or damaged crankshaft directly impacts engine reliability, power delivery, and longevity—especially in high-stress two-stroke applications like the YZ125. The Wossner CS2077 is a...09210946- SKU:
- 09210946
- Availability:
- Ships Same Business Day
- Weight:
- 6.02 LBS
MSRP: $342.00Now: $324.90Was: $342.00Qty in Cart: 0Quantity:Price:MSRP: $342.00Now: $324.90Was: $342.00Subtotal: -
On Sale
VINTCO Crankshaft Assembly - Yamaha CR2027
VINTCO
MSRP: $419.95Now: $390.55Was: $419.95A crankshaft is the backbone of your engine's bottom end—it converts combustion energy into rotational power, and any weakness here cascades through your entire drivetrain. The VINTCO CR2027 pairs a...09210950- SKU:
- 09210950
- Availability:
- Ships Same Business Day
- Weight:
- 10.20 LBS
MSRP: $419.95Now: $390.55Was: $419.95
