Use this exhaust system when you want to enhance your Volkswagen GTI's performance whether you're on a daily commute or hitting the track. It's perfect for car enthusiasts who want more power and a great - sounding ride. The exhaust features a 3 - inch cat - back design with 2.5 - inch dual split rear and carbon fiber tips. It's made of T304 stainless steel, ensuring durability even in tough conditions.