Vibrant 1140 2.25" Ultra Quiet Resonator Designed to dampen exhaust noise Facilitates UN-disrupted exhaust flow, Withstands high exhaust temperature Constructed from t304 stainless steel Features a "true straight through" perforated core Inlet Diameter: 2.25", Outlet Diameter: 2.25", Body Width: 6.5" x 4.75", Body Length: 9.75", Overall Length: 13.75"