This aggressive sounding system is designed to replace the original rear mounted mufflers located behind the rear axle. With easy fit in mind, the system is mandrel bent for maximum performance and includes specially selected mufflers to support the performance image of the car. As an America Thunder system, it delivers an aggressive exterior tone with moderate interior sound level that is 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, the system includes all necessary parts and hardware for easy installation.California Proposition 65 Chemical Name 1: Nickel (metallic)California Proposition 65 Chemical Name 2: Chromium (hexavalent compounds)Color: BlackExhaust Series: American ThunderExhaust Type: SingleExit Position: Single RearExit Style: StraightHeat Shield Attached: NoInlet Diameter: 2.500 in.Inlet Inside Diameter: N/AMaterial: Aluminized SteelMuffler Count: 1Muffler Part Number: Kit OnlyMuffler Series: 60 Series Delta FlowOutlet Diameter: 2.500 in.Outlet Outside Diameter: 3.500 in.Single or Dual: SingleSound Level: ModerateSystem Type: Axle BackTail Pipe Diameter: 2.500 in.Tip Diameter: 3.500 in.Tip Quantity: 1Title: Flowmaster 17421 Axle-back System 409S - Single Rear Exit - American Thunder - Moderate SoundTubing Diameter: 2.500 in.WARNING CA Proposition 65: YesWARNING CA Proposition 65 Message: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov