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: 2.250 in.Inlet Inside Diameter: 2.250 in.Inlet Outside Diameter: 2.250 in.Inlet Position: OffsetInlet Type: Single OffsetMain Piping Diameter: 2.250 in.Material: Aluminized SteelMount Type: Uses New Hangers (Not Included)Muffler Series: 50 Series Delta FlowMuffler Type: ReflectionOutlet Connection Type: PipeOutlet Diameter: 2.500 in.Outlet Outside Diameter: 2.250 in.Outlet Position: CenterOutlet Type: Single Center OutletOverall Length: 23.000 in.Shape: OvalSound Level: ModerateTip Quantity: 0Title: Flowmaster 942451 50 Delta Flow Muffler - 2.25 Offset In / 2.25 Center Out - Moderate SoundWARNING CA Proposition 65: No