MagnaFlow Exhaust Products 17050 Black Series Filter-Back Performance Exhaust System 4 in. Incl. Tubing/Tailpipe/5 in. Round Tip Single Pass. Side Rear Exit Black Coated Stainless Black Series Filter-Back Performance Exhaust System 100% Stainless Steel, Axle-Back 4.0in. Filter-Back; 5.0in. Ceramic Black Coated Tip Lifetime Warranty Dyno Tested And Proven To Make Power Great Sound, Has A Smooth, Deep Tone.