Blow Off Valves

The COBB XLE BPV is a compact and lightweight by-pass valve that is capable of holding very high boost pressure without leaking. Its unique design allows for extremely fast venting of boost when actuated. The BPV operates in multiple venting modes and...

This GFB Hose Plug is used to block the plumb-back hose in a full atmosphere-venting application. It will suit any 30mm hose, and is included with GFB blow-off valves.

TMS - Turbo Management System - Don't throw your BOOST away - INCREASE IT BY 40%. GFB's Turbo Management System (TMS) parts offer multiple performance benefits over factory diverter valves. MORE POWER - Ours Holds Boost, Can Yours?Factory diverter valves...

GFB's whistling trumpet gives off a unique high-pitch whistle sound on gearshift. It is a direct screw-on replacement for the standard trumpet found on most GFB valves, and is recommended for use where peak boost pressure is above 13psi.

QR is the recirculating valve based on the TiAL's high-performance Q. Outline interchangeable with the Q and original BV50. It's Offered with a variety of springs for difference vacuum levels, and a special spring for supercharged vehicles. Customizable...