Product Highlights for the V8 Mustang Roush Exhaust with Round Tips (2011-2014): Compatible with 2011-2014 Mustang GT 5.0L V8 & 2011-2012 GT500 5.4L V8 models. Offers an upgraded aggressive sound tone and volume. Features a unique open-chambered design for enhanced performance. Provides higher airflow and reduces back pressure, resulting in increased horsepower and torque. Constructed with 409 stainless steel pipes and muffler for durability. Includes 304 stainless steel exhaust tips with chrome flashing for a sleek appearance. Please check local noise ordinances for legality. Does not have a negative impact on emissions. No in-cockpit boom during cruising. Compatible with Roush 2010-2012 Mustang Rear Valance and Ford factory rear valance. The Roush Axle-Back Mustang Exhaust Kit with Round Tips, designed for the 2011-2014 Mustang GT and 2011-2012 Mustang GT500, represents an innovative exhaust system from Roush. It features an open-chambered designed muffler (unlike conventional fiberglass-packing mufflers). This design delivers a distinctive, aggressive sound unique to Roush, along with extended longevity (thanks to the absence of fiberglass packing), increased horsepower, and improved airflow. Moreover, this system eliminates the in-cockpit boom often associated with performance exhausts at cruising speeds. This system not only sounds incredible but also boasts an appealing appearance. The round tips are crafted from high-quality 304 stainless steel and undergo a chrome flashing process, featuring the Roush logo embossed at the end. Traditional chrome plating relies on bonded chemicals for its shine, making it susceptible to cracking and flaking, especially under high temperatures. In contrast, the chrome flashing method used here is micro-porous and securely bonded to the metal surface, rendering it resistant to cracking due to localized damage. Additionally, this chroming technique resists heat-induced color changes. Installing the exhaust kit is a breeze, as it mounts to the factory mounting points and includes all necessary hardware and instructions, ensuring a quick turnaround to get you back on the road. The mufflers and inlet pipe are made from 409 stainless steel, enhancing durability. This kit is backed by a 3-year limited warranty. This Mustang Exhaust offers easy installation using factory hanger mountings, eliminating the need for custom fabrication. It also includes OE-quality spherical clamps for an improved fit. Importantly, this kit does not negatively impact emissions. Listen For Yourself! Click on a sound clip below to hear what this exhaust sounds like: Drive-By Behind In-Car Launch Highway (no boom) Compare the above ROUSH exhaust recordings to the stock 2011 5.0L Mustang exhaust recordings below: Stock exhaust drive-By Stock exhaust from behind