If you think that a muscle car should sound, well, muscular, than the parts found in the perfect exhaust collection will give your 2010 – 2014 Mustang the commanding voice you need to rule the road. Stock exhaust tips widened by half an inch from 3 inches to 3.5 inches on the GT trim during these years, both to look more powerful and to enhance the exhaust note, especially on V8 versions. Installing a well-chosen, high quality aftermarket axle-back or cat-back exhaust system makes the depth and power of your Mustang's growling rumble even stronger, and helps save fuel and gain power by giving an unobstructed exhaust flow. Parts from the perfect exhaust collection are tough but lighter than stock to save weight for drag racing and fuel efficiency.