The 4″ Downpipe-Back Exhaust (S6005SLM) from Armor Plus is a high-performance exhaust system designed for maximum power and efficiency. Featuring a single side exit, this exhaust is built to withstand extreme conditions and provide a deep, aggressive sound. Its key features include a 4″ mandrel-bent tubing for smooth exhaust flow, a high-flow muffler for increased horsepower and torque, and a durable stainless steel construction for long-lasting performance. With its easy installation and impressive performance, this exhaust is a must-have for any serious truck enthusiast.