The MagnaFlow 4 X 9in Oval StraightThrough Performance Exhaust Muffler 11244 is engineered to enhance your ride with a healthy helping of our signature exhaust sound and dynoproven performance thanks to its freeflowing straightthrough perforated stainless steel core wrapped in stainless steel mesh and acoustic fiber fill The reversible universal 2/2in diameter inlet/outlet StraightThrough layout allows you to install it in whatever orientation and configuration you see fit However professional installation is highly recommended Muffler 11244s weightoptimized 4x9x18in ovalshaped body features a satin finish that elevates the overall aesthetics of your current exhaust setup 11244 is made of durable corrosion resistant stainless steel and produced using cuttingedge CNC precision robotic manufacturing techniques all backed by MagnaFlows limited lifetime construction warranty