With this SPA USA Style blow off valve, you will let the competition know that you're serious. The monstrous 2 inch billet aluminum valve works great on the highest horsepower turbocharged or supercharged applications engines that are producing up to 1,500 HP. The SPA USA racing style blow off valve offers the ultimate in surge protection. The SPA USA racing style blow off valve offers the highest flow capacity on the market today. This all aluminum housing has a unique V-Band mount that allows a full 360 degrees orientation. Included is the matching color V-Band clamp and weldable tube. Made of aircraft quality billet aluminum that is available in 6 different colors.