BORLA(r) presents their exhaust systems for the Mustang EcoBoost equipped with Active Exhaust. Our Cat - Back(tm) systems include valves that retain the function of the Active Exhaust allowing you to change the volume of your exhaust by selecting different driving modes. The S - Type sound level delivers an aggressive sound without the drone and is tuned specifically for the 2.3L EcoBoost engine. This system features quad tips in a bright chrome finish on T - 304 stainless steel, but is also available in black chrome., , Cat - Back(tm) Exhaust System, Active Exhaust Valves, S - Type Sound Level, No - Drone, Bolt - On Installation, Bright Chrome On T - 304 Stainless Steel Quad Tips, T - 304 Stainless Steel Construction, , Each BORLA(r) Exhaust System is built from premium T - 304 austenitic stainless steel to give you the absolute best in performance and durability., , Best of all, BORLA(r) stands behind every system with a Million - Mile Warranty. Just what you'd expect from the world's most experienced (and most winning) exhaust brand.