The Ford Racing axle-back muffler kit for 2011–2014 Mustang GT replaces the rear mufflers with corrosion-resistant aluminized 409 stainless bodies and retains stock GT500 mufflers with polished 304 stainless 4 in. exhaust tips. It delivers a throatier exhaust note while remaining 50-state drive-by noise legal, and is built for long-term resistance to corrosion.
Ford Racing 2011-2014 Mustang GT Muffler Kit (50 STATE)