HKS Sport Exhaust 2002-2007 WRX / 2004-2007 STI

Here, you are looking at the HKS Sport Exhaust for the 2002-2007 WRX/STI. Sport Exhaust Systems are designed to reduce backpressure and increase exhaust flow for greater peak power and a broader torque band. Each Sport Exhaust application utilizes a specific muffler design and shape along with the appropriate piping diameter to maintain low-end torque while maximizing high-end horsepower. Details: S409 Stainless Steel Construction  Black Corrosion Prevention Throughout Piping 106mm Polished Tip 75mm Piping Diameter Gaskets and Hardware Included