The Ford Racing stainless X-pipe for 2011–2014 Mustang GT converts a factory H-pipe into a more efficient X-pipe to improve exhaust flow. Made of stainless tubing and designed to clamp on, the X-pipe requires cutting the factory exhaust for installation and provides an upgraded flow path intended to enhance exhaust efficiency and longevity without welding.
Ford Racing 2011-2014 Mustang GT X-Pipe (Reuses Stock Cats)