Turbosmart GenV RacePort BOV Blow Off Valve 50mm Universal Part No: TS-0204-1131 (Blue) Part No: TS-0204-1132 (Black) Part No: TS-0204-1133 (Purple) Part No: TS-0204-1134 (Red) Part No: TS-0204-1135 (Limited Black) The Turbosmart RacePort is famous for being an amazingly small and light BOV for turbocharged competition level engines. Featuring our unique collar design and internal flow structures, it is 50% lighter and 25% smaller than the competition while flowing 330 CFM – making it the highest flowing BOV of it’s type on the market.