The MagnaFlow 4in. Round Straight-Through Performance Exhaust Muffler 10419 brings our world-famous exhaust sound and dyno-proven performance to your ride in a weight-optimized 4x4x14in. package with a premium satin finish.The straight-through free-flowing design of this round-bodied muffler s reversible; universal 3/3in. diameter inlet/outlet layout enables versatile installation options to match the spacing requirements of your vehicle. Due to the cutting and welding involved; professional installation is highly recommended. Internally; 10419 utilizes a perforated stainless steel core wrapped in stainless steel mesh and acoustic fiber fill to achieve a powerful; resonant tone. This muffler is made of durable; corrosion resistant stainless steel and produced using cutting-edge CNC precision robotic manufacturing techniques; all backed by MagnaFlows limited lifetime construction warranty.