This Flowmaster® Outlaw cat-back exhaust system is for the 2022-2025 Toyota Tundra trucks with the 3.4-liter engine, including hybrid models. This system is manufactured using durable 409 stainless steel tubing and is mandrel bent for better exhaust gas flow. A Specially tuned Outlaw muffler is used for an aggressive sound level outside with minimal interior resonance inside the cab. Dyno results show an improvement of 10 hp and 14 lb/ft of torque at the rear wheels over the stock exhaust. This system uses dual 3.5-inch black ceramic coated tips that can exit dual out the rear or dual out the side. The system uses all the existing factory hanger locations and includes installation instructions and all necessary hardware for an easy installation that you can do at home. Backed by Flowmaster's Lifetime Limited Warranty.