The Greddy Ti-C catback exhaust is designed for high performance, and the look of a titanium exhaust with the cost of stainless steel system. The Greddy WRX & STI Ti-C catback exhaust features 3" piping with a 2.5" taper at the downpipe for a good fit to a stock downpipe. The system is full stainless steel with a titanium tip, embossed with the Greddy logo, and a blue titanium burn at the end for show-quality looks. With the included silencer installed, the Greddy Ti-C Exhaust is designed to be under 95 decibels, with it out it's very loud.