This FlowFX(R) Cat-back exhaust system is for 2009-2019 Toyota Tundra with 4.0L, 4.6L, 4.7L or 5.7L engine and is a bolt-on emissions legal system with a moderately aggressive exterior sound and a moderate interior tone. The system features all stainless steel construction for long life, and a specially designed dual inlet FlowFX(R) "straight-through" performance muffler flowing into dual 2.50-inch mandrel-bent tailpipes for maximum performance. The tailpipes exit out the sides behind the rear wheels, which is beneficial for towing, and are finished off with a pair of large 4.50-inch black ceramic coated stainless steel tips for good looks. The system includes all necessary parts and hardware for easy at home installation and is covered by our Lifetime Limited Warranty.Exhaust Type: Cat-BackExit Position: Dual Out SideInlet Inside Diameter: 2.500 in.Material: 409 Stainless SteelMuffler Body Length: 18.000 in.Tail Pipe Diameter: 2.500 inTip Diameter: 4.500 in.Tubing Diameter: 2.500 in.WARNING CA Proposition 65: YesWARNING CA Proposition 65 Message: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov