Designed to work with BORLA® 3" Cat-Back™ Systems ONLY. This Hydroformed BORLA® SwitchFire® X-Pipe is designed to replace the Merge X-Pipe in BORLA® Cat-Back™ Systems for '18-'25 Mustang GT/ '24-'25 Mustang Dark Horse. By using Hydroforming in the manufacturing process we are able to have a lower profile on this part than a conventional SwitchFire® X-Pipe. This SwitchFire® X-Pipe is 21.1" Long x 7.8" Wide x 5" High, with 2.75" O.D. Inlet and 3" I.D. Outlet. 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 for improved performance. The result is an aggressive custom sound and improved power. Each SwitchFire® X-Pipe is built from premium, high-quality T-304 austenitic stainless steel, superior to T-400 series knockoffs (such as 409), to give you the absolute best in performance and durability. Ultra-smooth mandrel bends ensure maximum flow & power, and precision computer numerical control (CNC) manufacturing ensures an accurate fit. Best of all, BORLA® stands behind every SwitchFire® X-Pipe with a Million-Mile Warranty. Just what you'd expect from the world's most experienced (and most winning) exhaust brand.