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Engines and Components› Crankshafts and Components

Unorthodox Racing

Crankshaft Pulley

$299.00 $269.00 Save $30.00

SKU: UR-CS731

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In Stock
Ships by Aug 3
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30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The Unorthodox Racing UR-CS731 engine crankshaft pulley is a high-performance upgrade engineered for select Kia and Hyundai models. Manufactured from 6061 aluminum billet using CAD design and CNC machining, this pulley offers a significant weight reduction, dropping from an OE weight of 5.1 lbs to just 0.94 lbs. This reduction in rotating mass contributes to real horsepower and torque gains across the entire RPM range, positioning it as one of the highest HP/Torque per dollar gains on the market. Accessory pulleys are available separately for many applications. The product is noted for its broad range of applications within the Kia and Hyundai lineups.

MIA's Description

The Unorthodox Racing UR-CS731 is an engine crankshaft pulley designed for Kia and Hyundai models. It is CAD designed and CNC machined from 6061 aluminum billet. This lightweight pulley replaces the OE weight of 5.1 lbs with a UR weight of 0.94 lbs.

Fitment

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Specifications

BrandUnorthodox Racing
Part NumberUR-CS731
CategoryEngines and Components

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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