BORLA'S unique SwitchFire X - Pipe assembly is designed to replace the O.E. resonator ONLY on this application. Install it by itself, or combine it with other BORLA components. Part is 33.2 Long x 7.1 Wide x 5.5 High. Inlets 2.25 O.D., Middle Pipes 2 O.D., Outlets 2.5 I.D. Outlets are angled outward slightly. 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. Built from premium T - 304 stainless steel, superior to T - 400 series (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 everySwitchFire X - Pipe with a Million - Mile Warranty. Just what you'd expect from the world's most experienced (and most winning) exhaust brand.