Trust / GReddy Type-R "Stiff Spring" Blow-Off Valve (BOV) Kit to suit Nissan Skyline R32 GTR, R33 GTR & R34 GTR - RB26DETT.

Greddy Type-R Blow Off Valve. GReddy Blow off Valves are easily adjustable to prevent both premature boost leakage and compressor surge. Each Greddy RS BOV and Type-S is made of durable cast and billet aluminum frame and the valve to diaphragm ratio provides performance that cheap piston types cannot offer. The spring stiffness adjustment screw and 3 different sizes give the GReddy RS blow off valve user the option to match vehicles with mild upgrades to heavily tuned engines.