Corsa Performance Stainless Steel Cat-Back Exhaust 2015-2017 Mustang GT Coupe (Gunmetal Tips)Corsa has created this Sport Cat Back system for all Fastback 2015 2017 GT Mustangs to help ease the pain of a quiet exhaust note and the noticeable loss in power from the factory cat back. Manufactured entirely out of T 304 Stainless Steel, this bolt in 3" cat back exhaust system will give you a deep and mature muscle car sound without any drone. Just like their other S550 systems, this Corsa Cat Back exhaust uses a double X pipe that will bolt