2011 Mustang 3.7L V6 Cat-Back Street Series with 2.5" tubing and 4" polished tips Magnaflow exhaust is all Stainless steel tubing and straight through stainless steel Magnaflow perforamance mufflers and polished fully adjustable stainless steel tips. Magnaflow have always provied great performance and great sound. Part# 15591
