Perrin Lightweight Crank Pulley Black WRX (2002-2014) STI (2004-2018) Wheels maintains maximum boost longer in

maintains maximum boost longer in the rpm range

Weather you have a street

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

The new ISC N1 Coilovers for the 2005-2009 Subaru Legacy GT offer a sporty feel that can be taken to the track but driven on the street comfortably everyday

AEM performance strut bars lock the tops of your struts together to reduce strut movement in extreme conditions

Perrin Lightweight Crank Pulley Black WRX (2002-2014) STI (2004-2018) Wheels maintains maximum boost longer inPerrin'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