This Flowmaster® Flow FX® cat-back exhaust system for the 2014-2024 RAM 2500 trucks with the 6.4-liter HEMI engine is manufactured using durable 409 stainless steel throughout and features 3.50 to 3.00-inch mandrel bent pipes for better exhaust gas flow. Maximum increases on the dyno revealed 18 hp and 16 lb-ft of torque at the rear wheels over stock. This system exits with dual 4.00-inch black stainless steel tips for added style and a custom look. 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.