The AMS EVO X Racing Series Cat-Back Exhaust System is a no-nonsense, all business exhaust system designed to make the most power and shed serious weight off your EVO X. This exhaust features mandrel bent piping for the best exhaust flow. This system does not have any restrictions like other popular exhaust systems that "neck down" and hurt performance. Like all other AMS exhaust products this Cat-Back is TIG welded with 100% 304 stainless components including the flanges and hangers. The system utilizes factory exhaust hangers and includes a high quality slash cut 4" tip muffler. By simply installing this exhaust system you can expect to see as much as 15+ Wheel Horsepower gains over stock without even re-tuning the ECU!