Designed to work with Borla(r) Cat-Back(tm) Systems ONLY. This Borla(r) SwitchFire(r) X-Pipe is designed to replace the Merge X-Pipe in Borla(r) Cat-Back(tm) 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(r) Assembly, and 4 clamps. SwitchFire(r) X-Pipe is 25.3" Long x 7.8" Wide x 5" High (dimensions do not include adapters), with 2.75" O.D. Inlet and 3" I.D. Outlet. Completely eliminating the turbulent center intersection of a standard X-Pipe, Borla(r)'s patented SwitchFire(r) 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(r) 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(r) stands behind every SwithcFire X-Pipe with a Million-Mile Warranty. Just what youd expect from the worlds most experienced (and most winning) exhaust brand.