T-304 Stainless Steel Bolt On Installation All Welded Construction Made In USA No Drone Guarantee This Mid-Section includes a merge X-Pipe and ATAK mufflers for increased performance and our distinctive BORLA sound. X-Pipes unleash hidden horsepower. It fits with either the O.E. tailpipes or BORLA tailpipes. 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 every Mid-Section with a Million-Mile Warranty. Just what you'd expect from the world's most experienced (and most winning) exhaust brand.