The EPMAN RACING ITALY 50mm BOV features a 50mm (2″) aluminium heat stabilised piston with viton o-rings to ensure a long life with minimal wear. As tested on the EPMAN Golf Mk1 Berg Cup car, Speckys 9.5 second ¼ mile Tigra, numerous Time Attack cars and a 1500bhp for Nissan GTR, the proof of its ability to handle high boost and high power applications has been proven. The vacuum barb is a generous 6mm and fully rotatable 360 degrees to suit any installation. This valve is suitable for custom installations only, and cannot be installed on a silicon hose. Supplied with weld on aluminium flange.