The Super 40 features Flowmaster's Delta Flow technology. It's larger case profile provides the best of both worlds of performance and sound. The Super 40 has that deep powerful sound of the Original 40 series but with all the benefits of performance and low interior resonance from the Delta Flow technology. Constructed of 16 gauge aluminized steel and fully MIG welded for maximum durability.Automotive Item Grade: High PerformanceBody Height: 5.000 in.Body Length: 13.500 in.Body Width: 10.000 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: CenterInlet Type: Single CenterMain Piping Diameter: 2.250 in.Material: Aluminized SteelMount Type: Uses New Hangers (Not Included)Muffler Series: Super 40 SeriesMuffler Type: ReflectionOutlet Connection Type: PipeOutlet Diameter: 2.500 in.Outlet Outside Diameter: 2.250 in.Outlet Position: OffsetOutlet Type: Single Offset OutletOverall Length: 19.500 in.Shape: OvalSound Level: AggressiveTip Quantity: 0Title: Flowmaster 952447 Super 40 Muffler - 2.25 Center In / 2.25 Offset Out - Aggressive SoundWARNING CA Proposition 65: No