Flowmaster's American Thunder system for the 2013 - 2015 Toyota Tacoma features a Super 50 series muffler and mandrel-bent 2.50 in. piping throughout. The direct bolt-on system delivers increased performance and mileage with a deep but moderate tone inside and out. The system carries Flowmaster's lifetime limited warranty for long term quality assurance and includes all necessary installation hardware.Warranty Information:Limited LifetimeCalifornia Proposition 65 Chemical Name 1: Nickel (metallic)California Proposition 65 Chemical Name 2: Chromium (hexavalent compounds)Exhaust Series: American ThunderExhaust Type: SingleExit Position: Dual SideExit Style: StraightHeat Shield Attached: NoInlet Diameter: 2.500 in.Inlet Inside Diameter: 2.500 in.Material: Stainless SteelMuffler Count: 1Muffler Part Number: Kit OnlyMuffler Series: Super 50 SeriesOutlet Diameter: 2.500 in.Outlet Outside Diameter: 3.500 in.Single or Dual: DualSound Level: ModerateSystem Type: Cat BackTail Pipe Diameter: 2.500 in.Tip Diameter: 3.500 in.Tip Length: 13.000 in.Tip Quantity: 2Title: Flowmaster 817614 Cat-back System 409S Dual Side 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