This exhaust system is perfect for Subaru WRX and STI owners who want to boost their vehicle's performance and sound. Whether you're driving on the street or taking your car to the track, this exhaust will work great. It features a 3 - inch dual split rear exit design with 3.5 - inch tips. The T304 stainless steel construction makes it durable and easy to maintain, so it can handle all your driving adventures.