Use this exhaust system when you're driving your Ford F - 250 or F - 350 Super Duty on both daily commutes and long - distance trips. It's perfect for Ford truck owners who want to improve their vehicle's performance and get a great - sounding exhaust. The system is made of corrosion - resistant T409 Stainless Steel, and the tubing is mandrel - bent for maximum exhaust flow. It has a 4 - inch cat - back single - side design, suitable for 2011 - 2016 Ford F - 250/350 Super Duty trucks with 6.2L V8 Gas engines.