Looking for that Banks Monster performance with a modest price? Then Banks new Monster Sport is the cool cat-back exhaust system you are looking for. Thats because the Banks Monster Sport Exhaust is meticulously designed & tested to deliver cooler exhaust gas temperatures. Cooler EGT equals power. This 4" rugged, heavy-duty 100% stainless steel Monster of an exhaust system helps eliminate backpressure. With air-flows up to 122% better than your Duramaxs stock exhaust, Banks Monster Sport exhaust system is streamlined with heavy-wall tubing and constant-diameter bends increasing your trucks airflow while improving fuel economy. Unlike the noisy drone of many straight-through mufflers, this Monsters muffler is extensively sound-tested and engineered with a unique expansion chamber and spun ceramic, a very high-temperature packing. The result? A rich, authoritative exhaust note that isnt domineering yet massively improves flow over the stock muffler! Now thats a Monster!