Perrin Performance offers multiple exhaust selections for the 2002-2007 WRX & STI. Each system features a resonated midpipe with flex-section and full 3" stainless steel construction. The Perrin WRX & STI catback exhaust is available in two variants: standard polished stainless steel or flat black powder coat finish for designed to garnish your subaru with an extra stealthy look.The Perrin WRX & STI catback exhausts utilizes 3" mandrel bent performance stainless steel piping all the way through for optimal performance, and will bolt up seamlessly to any stock or aftermarket downpipe.