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.S. (Dual out side) systems are the perfect choice. Force II systems deliver a moderate exterior tone and moderate to mild interior tone, and are suited to customers looking for efficiency improvements without a lot of noise. Especially recommended for towing applications. 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.Warranty Information:Limited LifetimeCalifornia Proposition 65 Chemical Name 1: Nickel (metallic)California Proposition 65 Chemical Name 2: Chromium (hexavalent compounds)Exhaust Series: Force IIExhaust Type: SingleExit Position: Dual SideExit Style: StraightHeat Shield Attached: NoInlet Diameter: 3.000 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: 2.500 in.Single or Dual: DualSound Level: Mild/ModerateSystem Type: Cat BackTail Pipe Diameter: 2.500 in.Tip Diameter: 3.000 in.Tip Quantity: 2Title: Flowmaster 817554 Cat-back System 409S - Dual Side Exit - Force II - Mild/Moderate SoundTubing Diameter: 2.500 in.WARNING CA Proposition 65: YesWARNING CA Proposition 65 Message: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov