For the person who wants the aggressive look of a NASCAR race truck along with all the benefits that a Flowmaster Cat-back exhaust system provides. D.O.S.S. (Dual out same side) systems are the perfect choice. This American Thunder system features all mandrel-bent aluminized steel tubing flowing into a specially designed Super 40 Series performance muffler with dual 2.50-inch tailpipes finished off with a pair of large 3.00-inch polished stainless steel tips. The system delivers a moderately aggressive exterior sound with a moderate interior tone and is suited to the enthusiast who wants their performance to be heard. Like all Flowmaster systems, the benefits include improved throttle response, power and mileage. Designed for an easy fit, these systems include all necessary parts, hardware for a quick and easy installation.