Perrin Lightweight Crank Pulley Red WRX (2002-2014) STI (2004-2018) Legacy GT Suspension (10-up) SPEC Stage 1 for MS3

SPEC Stage 1 for MS3 (07-09)

giving you the loudest most aggressive exhaust system available for the Mazdaspeed3

increasing efficiency

The unique slotted and or drilled friction surface helps wipe away debris that can form between the pad and the disc

Perrin Lightweight Crank Pulley Red WRX (2002-2014) STI (2004-2018) Legacy GT Suspension (10-up) SPEC Stage 1 for MS3Perrin's lightened crank pulley for the Subaru WRX STI LGT is engineered to reduce rotating mass, increasing horsepower and torque. Made from 6061T6 aluminum and weighing 1. 2lbs, Perrin crank pulley is more then 4lbs lighter then the stock crank pulley. Perrin's pulley is not underdriven and will not affect the life of your engine. The pulley is simply a redesigned, lighter version of the stock crank pulley. Aftermarket underdrive pulleys are prone