Turbosmart Supersonic BOVs - WRX 2002-2007 / STI 2004-2017 / Forester XT 2005-2007
A fully-atmospheric BOV for racers and serious enthusiasts who want to be noticed. The Turbosmart Supersonic BOV provides superior flow performance with the famous Supersonic sound. Featuring tool-free adjustment via a rotating cap and a positive-seal piston, this is Turbosmart's loudest BOV. Some applications my require a BOV adapter or fitting. Please check the applications tab for part numbers.
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