Use this exhaust system when you want to enhance your daily driving experience or show off at car meets. It's perfect for Mustang owners from 2015 - 2018 who want to improve their car's performance and looks without complex tuning. The system has a 3' diameter from the downpipe that splits into two 2.5' sections, with 4' dual - walled tips and a 10' resonator. It's made of 304 stainless steel and is compatible with the stock or COBB 3' downpipe.