Borla ATAK Cat-Back Exhaust System, Black Flap Tips for Mustang GT 2018+

3" diameter exhaust system. The system features an X-pipe for increased performance and improved sound. The system features BORLA® Polyphonic Harmonizer Technology, which uses patented units that contain pipes of different diameters and lengths to create several different tones that harmonize, to deliver a clean, rich and aggressive sound.