Flowmaster Force II Cat-back Exhaust SystemThis Force II Cat back exhaust system is specifically designed for 2011 2019 GM Silverado Sierra 2500HD 3500HD crew cab short bed trucks with the 6. 0L engine. This emissions legal system is constructed from 3. 50 inch mandrel bent stainless steel tubing flowing into a 50 Series Big Block performance muffler for a mild to moderate tone inside and moderate sound level outside the truck. The tailpipe exits behind the right rear tire, which is ideal for