Flowmaster Sound. The Flowmaster American Thunder Catback Dual Dump exhaust system with its mandrel bent tubing will improve your Mustangs exhaust flow for an increase in power, and the included Super 44 Series Mufflers will give your Pony a deep throaty muscle car exhaust sound. Dual Dump Exit.This Flowmaster American Thunder Catback system features a Dual Dump design that exits the exhaust in front of the rear wheels for a stealthy appearance.
Stainless Steel Construction. Constructed from mandrel bent 2.5" diameter 16 gauge stainless steel tubing for it's corrosion resistant properties the Flowmaster American Thunder catback features Super 44 Series chambered mufflers for that classic muscle car sound.