aFe 49-46008-B MACH Force XP Cat-Back Exhaust System for Toyota Tundra V8 5.7L 2 Year Limited Warranty 3 in. Mandrel Bent 409 Stainless Steel Tubing Bayonet Style Hangers For Easy Installation Black Stainless Tip Included High Flow Muffler Free-flow muffler Mandrel bent tubing Black 304 stainless steel tip Hassle-free installation