Borla(r) system is a True Dual design. This 3″ diameter mid-section / Muffler assembly includes Active Exhaust Valves. The S-Type sound level delivers an aggressive, yet balanced sound with a deep tone without any drone. It features our SwitchFire(r) technology that completely eliminates 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 and a custom sound. This mid-section / muffler assembly fits with either Borla(r) tail pipes 60727BC black chrome on T-304 stainless steel, 60727CB brawler style black coated T-304 stainless steel, 60727CFBA carbon fiber with black anodized center, or the Original Equipment (O.E.) tail pipes. The system is constructed using T-304 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, it is backed by our Million Mile Warranty