Gain maxium performance From your WRX while still retaining a stock like appearance and sound level. The Cobb Tuning catback exhaust for the WRX or STi is renown for providing performance, value and quality. Constructed entirely of high-quality T304 Stainless Steel, from the hangers to the flanges.

 The Cobb Aftermarket WRX Cat Back Exhaust system replaces everything after the stock catalytic converter with smooth, 3 inch mandrel bent piping. The system is tastefully finished out with a specially designed, robotically welded Stainless Steel Muffler directing the exhaust gases out a double-walled 3.5 inch tip. This catback exhaust still retains all factory emissions equipment and conform to SAE dictated 95-decibel exhaust noise level limit enforced by California, as well as other states in the US. This system is a direct bolt on design to your 2002-2007 Subaru WRX or 2004-2007 STi. 100% Emissions Legal.