Perrin Lightweight Crank Pulley Black WRX (2002-2014) STI (2004-2018) Wheels Excessive caster angles can make

Excessive caster angles can make the steering feel heavier and less responsive

Weather you have a street

Try both and decide what is best for you

Extreme noise and harshness can be expected with the solid bushings

OEM TPMS (Tire Pressure Monitoring System) compatible

Perrin Lightweight Crank Pulley Black WRX (2002-2014) STI (2004-2018) Wheels Excessive caster angles can makePerrin'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