Flowmaster 818204 American Thunder Direct Fit Muffler

3.0-inch mandrel bent 16-gauge 409 stainless steel tubing maximizes exhaust flow and improves durability Kit includes complete hardware and factory styled hangers in the stock locations for an easy installation An tuned Super 40 series style chambered muffler delivers a deep, aggressive to moderate performance tone and improves exhaust flow Max increases of up to 18 hp and 15 lb-ft over the stock exhaust at the wheels