BOV RacePort V-BandBOV RacePort V Band The BOV RacePort V Band is a genuine Turbosmart blow off valve engineered to improve boost response, throttle lift control and reliability in high performance turbo applications. V Band Clamp Suit Turbosmart RacePort and Big Bubba BOVs The Turbosmart RacePort and Big Bubba V Band Clamp are essential for boost control. This clamp ensures a secure fit between the RacePort or Big Bubba Blow Off Valves and the compressor housing,