Flowmaster Exhaust System Kit

Also fits GT500.
American Thunder Kit
Axle back, Exhaust, Kit, Mustang, GT, Stainless, Performance
Axle-back 409S 11-12 Mustang
Axle-back System 409S - Dual Rear Exit - American Thunder - Aggressive Sound
Axle-back System 409S - Dual Rear Exit - American Thunder - Aggressive Sound - Ford Mustang GT
Exhaust System Kit
Fits 2011 to 2012 Ford Mustang GT with a 5.0L or 5.4L V8 engine.
These aggressive sounding systems are designed to replace original rear mounted mufflers located behind the rear axle using factory style connections. With easy fit in mind, these systems are mandrel bent for maximum performance and include specially selected mufflers. As an America Thunder system, it delivers an aggressive interior and exterior tone and is suited to the enthusiast who wants a distinctive and powerful exhaust note. Like all Flowmaster systems, the benefits include improved throttle response, power and mileage. Designed for an easy fit, these systems include all necessary parts and hardware for easy installation.