Designed to work with BORLA Cat-Backâ„¢ Systems ONLY. This BORLA SwitchFire X-Pipe is designed to replace the Merge X-Pipe in BORLA Cat-Backâ„¢ systems 140742 140743 140745 and 140746 and the Black Chrome and Carbon Fiber tip versions of them. Contains 2) 2.25" I.D. Inlet x 2.75" I.D. Outlet x 5" Long Adapters 1) SwitchFire Assembly and 4 clamps. SwitchFire X-Pipe is 25.3" Long x 7.8" Wide x 5" High (dimensions do not include adapters) with 2.75" O.D. Inlets and 3" I.D. Outlest. Pipes are 2" O.D.. Completely eliminating the turbulent center intersection of a standard X-Pipe BORLAÂ'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.