The Pro Series mufflers work on all applications ranging from street trucks, diesel pullers and RV pushers to every class of racing on dirt or asphalt. During development, at the dyno and track, the Pro Series mufflers consistently delivered performance that is equal to or surpasses open pipe systems, while dramatically reducing sound levels across the RPM range.Warranty Information:Limited LifetimeBody Height: 9.000 in.Body Length: 20.000 in.Body Width: 9.000 in.California Proposition 65 Chemical Name 1: Nickel (metallic)California Proposition 65 Chemical Name 2: Chromium (hexavalent compounds)Color: BlackInlet Diameter: 4.000 in.Inlet Inside Diameter: 4.000 in.Inlet Outside Diameter: 4.000 in.Inlet Position: CenterInlet Type: Single CenterMain Piping Diameter: 4.000 in.Material: Stainless SteelMuffler Series: Pro SeriesOutlet Diameter: 4.000 in.Outlet Outside Diameter: 4.000 in.Outlet Position: CenterOutlet Type: Single Center OutletOverall Length: 28.500 in.Shape: OvalSound Level: ModerateTip Quantity: 0Title: Flowmaster 14020100 Pro Series Muffler - 4.00 Center In / 4.00 Center Out - Moderate SoundWARNING CA Proposition 65: YesWARNING CA Proposition 65 Message: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov