Stock diameter pulley.
XLR8 Crank Pulleys are lightweight aluminum pulleys designed to reduce weight over the stock pulleys, and consequently free up horsepower. Each pulley is designed and manufactured here in the U.S. using CAD software. All pulleys are CNC machined, balanced and come with a warranty. Each pulley follows a strict quality control process ensuring superior products that are attractive, durable, and ultimately a power adder. All pulleys are CNC machined and 0 gram balanced and carry a full warranty.
Lightweight stock diameter pulleys increase engine output by significantly reducing the engine's rotational weight. Power wasted turning the extra weight now goes straight to your wheels. Stock diameter is also important for engines with factory or aftermarket superchargers to maintain factory boost levels. High wattage aftermarket audio systems also need stock diameter as many audio competitions require voltage to remain at a specific level.
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