APR's Golf/GTI catback exhaust is a stainless steel, mandrel bent system. Our exhaust begins after the factory catalytic converter with a with a 2.5” center pipe which contains a small 3” resonator. The 2.5” pipe continues back to the muffler and two stealth downturn tips. With TIG welding, fully stainless construction, and CNC'ed hangers, you will not find a higher quality system on the market.