GReddy Type RS blow-off valve specially designed to prevent compressor surge by relieving compressed air, which increases the longevity of your turbocharger.

Turbo lag is the enemy of any turbocharged vehicle. Our blow-off valves are easily adjustable to prevent both premature boost leakage and compressor surge. They are made with durable cast and billet aluminum frames, and have valve-to-diaphragm ratios that provide performance that is missing with cheap piston types.The spring stiffness adjustment screw and the two different sizes give the GReddy user the option to match vehicles with mild upgrades to heavily tuned engines. Also available in easy to install kit form for most Japanese turbocharged vehicles.