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.Features: Mandrel Bent 16 Gauge 409 Stainless Tubing Limited Lifetime Warranty Aggressive And Powerful Exterior Exhaust Tone Includes Hangers and Hardware For Easy Installation Axle Back System Dual Out Rear Exit Dyno Tuned for Maximum PerformanceProduct Description: 11-12 Ford Mustang GT, 5.0L/5.4L V8, 3.00" Mandrel Bent Tubing, Dual System, 40 Series Mufflers, 4.00" Polished Tips, American Thunder, DOR, 409S Stainless SteelPit Stop USA offers Flowmaster American Thunder Axle-Back Dual Exhaust System - 2011-12 Ford Mustang GT 5.0L/5.4L V8 817496 at low everyday prices. Be sure to check out all our products from Flowmaster including Flowmaster Ford Mustang (5th Gen) Exhaust Systems and Flowmaster Ford Mustang Exhaust Systems.