Seller notes

2011-2014 Mustang GT 5.0 5.0L Roush 421127 Axle Back Muffler Exhaust Kit •Fits 2011-2014 Mustang GT and 2011-2012 GT-500 •Unique open-chambered design provides increased horsepower and torque by increasing airflow and reducing back pressure •Distinct aggressive sound (sound clips below) •Uses 409 stainless steel in the construction of the pipes and muffler. •Roush exclusive open-chambered design that will not deteriorate over time unlike conventional fiberglass roving material. •Exha...

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