Featured Product World's First Polyphonic X-Pipe

Completely eliminating the turbulent center intersection of a standard X-Pipe, Borla's patented SwitchFire™ design truly blends the combustion pulses from both sides of the engine, while further tuning sound via our breakthrough Polyphonic technology. The result is a much more aggressive sound and improved power. In some cases, such as the 2015 - 2020 Mustang GT, the SwitchFire® is an alternative to a full Cat-Back® system. It simply replaces the front resonator and retains the stock rear section, while adding a dramatic upgrade in sound.