Blow-off valves play an important part of any forced induction system. The whole purpose is to vent off pressure to prevent a pressure surge from damaging the compressor blades on your turbo or centrifugal supercharger.

Designed with a two-piece Billet dome made from 6061 aluminum, and a black anodized finish.

Top reference ports are 1/8 inch NPT.

NEW FEATURE: Bottom 1/16 NPT Port, this will allow all you Centrifugal Supercharger guys to run a MAC valve to a third party controller (Holley, Boost Leash, Or AMS) to allow you to control your boost and utilize the Blow Off Valve as a Wastegate and assist you in fine tuning your target boost levels. 

Our weld on flanges are thicker than our competitors; we did this to help the DIY guy who is just learning how to weld, and also help with preventing warpage.