Flowmaster's American Thunder Cat-back exhaust system for the 2015-2016 Dodge Challenger R/T is perfect for the person looking for an aggressive sound level both inside and outside of the car, with all of the performance benefits that you would expect from Flowmaster. This bolt-on DOR (Dual Out Rear) emissions-legal system for cars with the 5.7L engine features a pair of Super 40 Series mufflers, and dual mandrel bent 2.50" tailpipes for maximum performance. The system is built out of 409S stainless steel and utilizes the original factory exhaust tips. The exhaust system is covered by Flowmaster's Lifetime Limited Warranty. Designed for an easy fit, this system includes all necessary parts and hardware for installation.Warranty Information:Limited LifetimeCalifornia Proposition 65 Chemical Name 1: Nickel (metallic)California Proposition 65 Chemical Name 2: Chromium (hexavalent compounds)Catalytic Converter Included: NoColor: Black Muffler; Natural TubingExhaust Type: DualExit Position: Dual RearExit Style: StraightHeat Shield Attached: NoInlet Diameter: 2.500 in.Inlet Inside Diameter: 2.500 in.Material: Stainless SteelMount Type: FlangedMuffler Count: 2Muffler Part Number: Kit OnlyMuffler Series: Super 40 SeriesMuffler Type: Welded BaffleOutlet Diameter: 2.500 in.Outlet Outside Diameter: 2.500 in.Shape: OvalSingle or Dual: DualSound Level: Moderate/AggressiveSystem Type: Cat BackTail Pipe Diameter: 2.500 in.Tip Diameter: N/ATip Type: Not IncludedTitle: Flowmaster 817716 Cat-back 409S - American Thunder - DOR - Mod/Agg SoundTubing Diameter: 2.500 in.WARNING CA Proposition 65: YesWARNING CA Proposition 65 Message: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov