Perrin Crank Pulley Red Subaru 2015-2018 WRX / 2013-2019 BRZ
Perrin's lightened crank pulley for the BRZ is engineered to reduce rotating mass, increasing horsepower and torque.
Made from laser etched billet 6061T6 aluminum and weighing 1.2lbs, Perrin crank pulley is 3.7 lbs lighter then the stock crank pulley.
Perrin's pulley is not underdriven and will not affect the life of your engine. The pulley is a redesigned, lighter rendering of the stock crank pulley. Aftermarket underdrive pulleys are prone to charging and drivability problems, the Perrin pulley avoids these potential problems by exactly copying the OEM piece.
The reduction at the crank shaft is effectively the same as removing 100 pounds of weight from your vehicle.
Perrin's crank pulley will not wear out engine bearings or the oil pump, and will not add any additional vibration or noise.
Installation is straight forward and can be done without jacking the vehicle or removing anything other than the belt cover, belts and stock crank pulley.