Borla(r) system is a True Dual design. This 3" Borla(r) mid-section / muffler assembly was designed specifically for the F-150 Raptor. It features the aggressive ATAK(r) sound and provides a more exciting driving experience without any drone. The system contains Borla(r)'s unique Polyphonic Harmonizer technology that utilizes patented units that contain pipes of different diameters and lengths to create multiple exhaust notes that harmonize to deliver a clean rich full-bodied sound. The result is an aggressive custom sound and improved power. System has Active Exhaust Valves. It fits with either the Original Equipment (O.E.) tail pipes or Borla(r) tail pipes 60627BC black chrome on T-304 stainless steel 60727CB Brawler style black coated T-304 stainless steel or 60627CFBA carbon fiber with black anodized center. 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.