ISR Performance Underdrive Crank Pulley - Nissan SR20DET S13
ISR Performance Underdrive Crank Pulley - Nissan SR20DET S13 These Pulleys are made from lightweight, high-grade billet aluminum. Computerized CNC machined from solid aluminum for structural integrity to withstand all level of RPM. lightweight pulleys reduce rotating weight and are slightly oversized to maximize efficiency, which nets more horsepower at the wheels Requires New Belts Smaller Than OE Size!!
** All ISR Performance Products are Designed for Off Road Use Only **
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