The MagnaFlow 7in Round StraightThrough Performance Exhaust Muffler 12761 brings our worldfamous exhaust sound and dynoproven performance to your ride in a weightoptimized 7x7x27in package with a premium satin finish The straightthrough freeflowing design of this roundbodied mufflers reversible universal 25/225in 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 12761 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 cuttingedge CNC precision robotic manufacturing techniques all backed by MagnaFlows limited lifetime construction warranty