MagnaFlow Exhaust Products 15304 MF Series Performance Cat-Back Exhaust System 3 in. Incl. Tubing/5x11x22 in. Muffler/Tailpipe/4 in. Round Tip Single Pass. Side Rear Exit Stainless MF Series Performance Cat-Back Exhaust System 100% Stainless Steel, Axle-Back 5 x 11 x 22in. Dual Inlet Muffler; 2.5/3.0in. Tubing; 4in. Polished Tip Lifetime Warranty Dyno Tested And Proven To Make Power Great Sound, Has A Smooth, Deep Tone.