Upgrade your Duramax with the MBRP S6032304 4 Inch Pro Series Filter-Back Exhaust, built from premium T304 stainless steel for exceptional durability. Its 4-inch diameter enhances airflow and performance, while the sleek 5-inch OD exhaust tip gives your truck a bold, aggressive look. The filter-back design ensures optimal exhaust flow, making it a perfect choice for those seeking both performance and aesthetics. Elevate your truck's sound, appearance, and power with this high-quality, easy-to-install exhaust system engineered for long-lasting performance.