Perrin (WRX/STi) EJ Engines (w/o AC) Red Crank Pulley 2002-2014 WRX / 2004-2021 STI

This Red crank pulley from Perrin has been precisely designed to reduce rotational mass for rapid revs, better throttle response, and improved performance. It’s specifically made for engines without AC, enabling those looking for maximum horsepower and torque to build their engine without the belt drive. Features include an anodized black finish with white PERRIN logo, machined 6061 T6 billet aluminum construction, and a weight reduction of 4lbs (equivalent to eliminating 100lbs of vehicle mass). It also has precision machined grooves that sync perfectly with OEM and aftermarket belts.