The three chamber design utilizes Flowmaster's patented Delta Flow technology along with an internal tuning chamber to reduce sound inside the vehicle. Provides the same performance and exterior tone characteristics as the two chamber, but with less interior resonance. Constructed of 16 gauge aluminized steel and fully MIG welded for maximum durability.Automotive Item Grade: High PerformanceBody Height: 4.000 in.Body Length: 17.000 in.Body Width: 9.750 in.Color: BlackFitment: UniversalInlet Connection Type: PipeInlet Diameter: 2.500 in.Inlet Inside Diameter: 2.500 in.Inlet Outside Diameter: 2.500 in.Inlet Position: CenterInlet Type: Single CenterMain Piping Diameter: OEMMaterial: Aluminized SteelMount Type: Uses New Hangers (Not Included)Muffler Series: 50 Series Delta FlowMuffler Type: ReflectionOutlet Connection Type: PipeOutlet Diameter: 2.000 in.Outlet Outside Diameter: 2.000 in.Outlet Position: DualOutlet Type: Dual OutletOverall Length: 23.000 in.Shape: OvalSound Level: ModerateTip Quantity: 0Title: Flowmaster 9425502 50 Delta Flow Muffler - 2.50 Center In / 2.00 Dual Out - Moderate SoundWARNING CA Proposition 65: No