ATV/UTV Crankshafts and Parts
ATV/UTV Crankshafts & Parts at JJ Motorsports
Rebuild your ATV/UTV crankshaft for maximum reliability and performance with premium kits from JJ Motorsports, featuring balanced, heavy-duty assemblies and components for Yamaha Blaster, Banshee, and similar 2-stroke models. These high-quality crankshafts deliver smooth rotation and high-RPM durability in off-road and racing conditions.
Shop Hot Rods and Wiseco crankshafts for race-proven strength. Explore related categories such as ATV/UTV engine for pistons and gaskets, or ATV/UTV for exhaust and suspension to complete your bottom-end rebuild and ride with total confidence across all conditions, from high-speed dunes to technical trails.
Top ATV/UTV Crankshafts & Parts
- Hot Rods Crankshaft Kit CBK0218 – Complete crankshaft kit with bearings and seals; fits Yamaha Blaster for stock rebuilds.
- Hot Rods Crankshaft Kit CBK0221 – Heavy-duty kit with stroker crank; boosts displacement for Banshee performance builds.
- Wiseco Crankshaft WPC148 – Forged crankshaft for 2-stroke engines; precision-balanced for Suzuki LT250R and Kawasaki KX models.
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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HOT RODS Crankshaft Assembly 4059
HOT RODS
$588.95If you're building a high-performance long-stroke engine for your ATV, you need a crankshaft assembly that's been engineered to handle sustained power delivery without compromise. The HOT RODS Crankshaft Assembly 4059 comes factory-assembled and trued to...09210033- SKU:
- 09210033
- Availability:
- Ships Same Business Day
- Weight:
- 9.81 LBS
- FEATURES:
- HEAVY DUTY CRANKSHAFT
- MATERIAL:
- 4140 STEEL
- RIDING STYLE:
- ADVENTURE TOURING / DUAL-SPORT
- STROKE LENGTH METRIC:
- 62.60 MM
- UNITS:
- ASSEMBLY
- MODEL:
- 4-CYCLE
- RIDING STYLE:
- ATV
- COLOR/FINISH:
- STEEL
- RIDING STYLE:
- OFF-ROAD
- TYPE:
- OEM STROKE
- DISPLACEMENT:
- 400 CC
- PRODUCT NAME:
- CRANKSHAFT ASSEMBLY
$588.95Qty in Cart: 0Quantity:Price:$588.95Subtotal: -
HOT RODS Crankshaft Assembly 4027
HOT RODS
$420.95If you're building a long-stroke engine for your ATV, you need a crankshaft assembly engineered specifically for the job—not a compromised adaptation. The HOT RODS Crankshaft Assembly 4027 arrives factory-assembled and trued to OEM specifications,...H120- SKU:
- H120
- Availability:
- Ships Same Business Day
- Weight:
- 8.50 LBS
- DISPLACEMENT:
- 250 CC
- MODEL:
- 2-CYCLE
- RIDING STYLE:
- ATV
- STROKE LENGTH METRIC:
- 70.00 MM
- MATERIAL:
- 4140 STEEL
- UNITS:
- ASSEMBLY
- FEATURES:
- STANDARD CRANKSHAFT
- TYPE:
- OEM STROKE
- COLOR/FINISH:
- STEEL
- PRODUCT NAME:
- CRANKSHAFT ASSEMBLY
$420.95Qty in Cart: 0Quantity:Price:$420.95Subtotal: -
HOT RODS Crankshaft 4432
HOT RODS
$322.95A quality crankshaft is the backbone of any high-performance engine build, and the HOT RODS 4432 delivers the reliability and precision you need for sustained power delivery. Factory-assembled and trued to OEM specifications, this crank eliminates...09210604- SKU:
- 09210604
- Availability:
- Ships Same Business Day
- Weight:
- 16.30 LBS
- DISPLACEMENT:
- 550 CC
- RIDING STYLE:
- UTV
- STROKE LENGTH METRIC:
- 82.00 MM
- COLOR/FINISH:
- STEEL
- MATERIAL:
- 4140 STEEL
- TYPE:
- OEM STROKE
- PRODUCT NAME:
- CRANKSHAFT ASSEMBLY
- UNITS:
- ASSEMBLY
- FEATURES:
- STANDARD CRANKSHAFT
- MODEL:
- 4-CYCLE
- RIDING STYLE:
- ATV
$322.95Qty in Cart: 0Quantity:Price:$322.95Subtotal: -
PROX Crankshaft 10.2456
PROX
$387.25A crankshaft is the backbone of your engine's reliability and performance—it converts combustion force into usable power while handling extreme rotational stresses. The PROX Crankshaft 10.2456 is a forged connecting rod kit engineered to meet or exceed...09210803- SKU:
- 09210803
- Availability:
- Ships Same Business Day
- Weight:
- 9.75 LBS
- PRODUCT NAME:
- CRANKSHAFT
- RIDING STYLE:
- OFF-ROAD
- UNITS:
- EACH
$387.25Qty in Cart: 0Quantity:Price:$387.25Subtotal: -
EPI Crankshaft Seal WE522162
EPI
$14.99A worn or leaking crankshaft seal will compromise engine reliability and performance on your Polaris 2-stroke ATV. The EPI WE522162 is engineered to maintain proper combustion chamber sealing, preventing oil contamination and power loss in demanding...WE522162- SKU:
- WE522162
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- RIDING STYLE:
- ATV
- UNITS:
- EACH
- PRODUCT NAME:
- SEAL
- RIDING STYLE:
- SNOW
- TYPE:
- CRANKSHAFT
$14.99 -
EPI Crankshaft Seal WE524120
EPI
$21.99A worn or damaged crankshaft seal compromises engine compression and invites fuel and oil leakage—problems that quickly escalate into costly repairs. The EPI WE524120 restores the critical seal between your crankcase and crankshaft, ensuring reliable...WE524120- SKU:
- WE524120
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- PRODUCT NAME:
- SEAL
- TYPE:
- CRANKSHAFT
- RIDING STYLE:
- ATV
- UNITS:
- EACH
$21.99Qty in Cart: 0Quantity:Price:$21.99Subtotal: -
EPI Crankshaft Seal WE524581
EPI
$14.99A compromised crankshaft seal accelerates wear on critical engine components and invites contamination into your powerplant. The EPI WE524581 delivers OEM-spec sealing performance, keeping your Polaris 2-stroke running at peak efficiency across demanding...WE524581- SKU:
- WE524581
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- RIDING STYLE:
- SNOW
- TYPE:
- CRANKSHAFT
- PRODUCT NAME:
- SEAL
- RIDING STYLE:
- ATV
- UNITS:
- EACH
$14.99Qty in Cart: 0Quantity:Price:$14.99Subtotal: -
EPI Crankshaft Seal WE524725
EPI
$24.99A worn or failing crankshaft seal on your Polaris 2-stroke ATV will compromise engine integrity and lead to costly damage down the line. The EPI WE524725 is engineered to OEM specifications, ensuring a reliable seal that prevents oil leakage and...WE524725- SKU:
- WE524725
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- PRODUCT NAME:
- SEAL
- UNITS:
- EACH
- TYPE:
- CRANKSHAFT
- RIDING STYLE:
- ATV
$24.99Qty in Cart: 0Quantity:Price:$24.99Subtotal:
