System contains BORLA(r)'S unique SwitchFire(tm) X-Pipe technoilogy that eliminaties the turbulent center intersection of a standard X-Pipe. BORLA(r)'S patented SwitchFire(tm) design truly blends the combustion pulses from both sides of the engine for improved performance, while further tuning sound via our breakthrough Polyphonic Technology The result is an aggressive custom sound and improved power. Installation requires cutting the driver's side O.E. Tail Pipe assembly. O.E. tail pipes are Resonance Free pipes and are reused with the BORLA(r) 60717. Use O.E. Tips, or Optional BORLA(r) Tips to complete the system., 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(r) stands behind every Connecting Pipe assembly with a Million-Mile Warranty. Just what you'd expect from the world's most experienced (and most winning) exhaust brand.