Perrin Recirculating BOV Red WRX (2008-2014) LGT (2005-2009) Ford Lightweight Aluminum Flywheel

Lightweight Aluminum Flywheel

Subaru Forester XT 2004-2013

Not only minimizing twisting and bending inputs to the chassis and member

This does not always mean an outright increase in your bar rate but rather a quickening of its effect allowing more bar rate earlier

Perrin Recirculating BOV Red WRX (2008-2014) LGT (2005-2009) Ford Lightweight Aluminum FlywheelThis Perrin Blow Off Valve cap, piston, and flange feature a CNC machined, 6061 Billet Aluminum construction. The body is CNC machined from a single block of aluminum, and no additional bolt on pieces hinders any potential leaks. The spring of the blow off valve features an adjustable cap which allows you to adjust release pressure settings. If you set it up loose, you will have a smoother release of boost at light loads and RPM. And you can tighten