This exhaust system is perfect for Subaru WRX and STI owners who want to boost their vehicle's performance. Whether you're a daily driver or a weekend racer, this exhaust will serve you well. It fits a wide range of Subaru models from 2011 - 2021. The tubing is made of T304 stainless steel, which is very durable and easy to clean. It has a 3 - inch dual split rear exit design with 3.5 - inch tips, offering a great look and maximum exhaust flow.