The MagnaFlow 3.5 X 7in. Oval Straight-Through Performance Exhaust Muffler 11148 is engineered to enhance your ride with a healthy helping of our signature exhaust sound and dyno-proven performance thanks to its free-flowing straight-through perforated stainless steel core wrapped in stainless steel mesh and acoustic fiber fill. The reversible universal 2.25/2in. diameter inlet/outlet Straight-Through layout allows you to install it in whatever orientation and configuration you see fit. However professional installation is highly recommended. Muffler 11148s weight-optimized 3.5x7x14in. oval-shaped body features a satin finish that elevates the overall aesthetics of your current exhaust setup. 11148 is made of durable corrosion resistant stainless steel and produced using cutting-edge CNC precision robotic manufacturing techniques all backed by MagnaFlow's limited lifetime construction warranty.