WRX/STI Perrin Crank Pulley - $125.00
Made from 6061T6 aluminum and weighing in at 1.2lbs, the PERRIN™ pulley is more then 4 lbs lighter then the stock crank pulley. The PERRIN™ pulley is not under driven and will not affect the life of your engine. The pulley is a redesigned, lighter rendering of the stock crank pulley. Aftermarket, under driven, pulleys are prone to charging and drivability problems from being excessively under driven. The PERRIN Performance lightened crank pulley will have no effect on your cars charging system.