Flowmaster's Super 44 muffler uses the same Delta Flow technology found in our larger Super 40 mufflers. The Super 44 delivers a powerful rich tone and is the most aggressive, deepest sounding, highest performing four inch case street muffler we've ever built! Constructed of 16 gauge aluminized steel and fully MIG welded for maximum durability.Automotive Item Grade: High PerformanceBody Height: 4.000 in.Body Length: 13.000 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: CenterInlet Type: Single CenterMain Piping Diameter: OEMMaterial: Aluminized SteelMount Type: Uses New Hangers (Not Included)Muffler Series: Super 44 SeriesMuffler Type: ReflectionOutlet Connection Type: PipeOutlet Diameter: 2.500 in.Outlet Outside Diameter: 2.250 in.Outlet Position: OffsetOutlet Type: Single Offset OutletOverall Length: 19.000 in.Shape: OvalSound Level: AggressiveTip Quantity: 0Title: Flowmaster 942447 Super 44 Muffler - 2.25 Center In / 2.25 Offset Out - Aggressive SoundWARNING CA Proposition 65: No