Flowmaster American Thunder Dual Exhaust System - 1999-2004 Ford Mustang Cobra 4.6L DOHC Head Support With over a quarter century

With over a quarter century in the performance industry

3 approved with SFI tag included

130 in Thick

Ford EEC-IV

1980-1980 Mercury Marquis

Flowmaster American Thunder Dual Exhaust System - 1999-2004 Ford Mustang Cobra 4.6L DOHC Head Support With over a quarter centuryFor the person who is looking for a complete Cat back dual exhaust system with an aggressive tone. With easy fit in mind, these systems are mandrel bent for maximum performance and include specially selected mufflers. American Thunder systems deliver a moderate to aggressive interior and exterior tone and are suited to the enthusiast who wants their performance to be heard. Like all Flowmaster systems, the benefits include improved throttle response,