The Race Port is famous for being an amazingly small and light BOV for supercharged 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. The supercharger-specific Race Port features a soft spring so it can stay open at idle, when the supercharger is still producing boost. SUPPLIED WITH: Vacuum fittings, weld flange, V-band assembly, and Pink Spring Rated -24 to -14 In Hg (installed). Billet 6000 series aluminium construction Quick release v-band collar for ease of installation and removal 2.0' Inlet flows over 330 CFMMILSPEC hard anodized valve guide and stem Hi Temp Silicon Nomex diaphragm Positive sealing valve seat Twin 1/16'NPT pressure ports for convenient positioning Collar secured cap for quick spring changes 4in Hg to 26in Hg activation range 5 user configurable corrosion resistant springs available Valve position sensor option Designed, manufactured and validated in-house at Turbosmart HQ