For the person who wants the look of a traditional dual exhaust system with all the benefits that a Flowmaster Cat-back exhaust system provides. D.O.R. (Dual out rear) systems are the perfect choice. American Thunder systems deliver a moderate to aggressive interior and exterior tone and are suited to the enthusiast who wants their performance to be heard. Like all Flowmaster systems, the benefits include improved throttle response, power and mileage. Designed for an easy fit, these systems include all necessary parts and hardware for easy installation.Exhaust Series: American ThunderExhaust Type: SingleExit Position: Dual RearExit Style: StraightHeat Shield Attached: NoInlet Diameter: 3.000 in.Inlet Inside Diameter: N/AMaterial: Aluminized SteelMuffler Count: 1Muffler Part Number: 43083Muffler Series: 80 Series CrossflowOutlet Diameter: 2.500 in.Outlet Outside Diameter: 3.000 in.Single or Dual: DualSound Level: AggressiveSystem Type: Cat BackTail Pipe Diameter: 2.500 in.Tip Diameter: N/ATip Quantity: 0Title: Flowmaster 17143 Cat-back System - Dual Rear Exit - American Thunder - Aggressive SoundTubing Diameter: 2.500 in.WARNING CA Proposition 65: No