Vibrant - 124202-Bolt Titanium Flange, 2.50" I.D.Exhaust Flange; 2.5 in. ID; 5.25 in. W; 3.5 in. H; 0.3125 in. Thickness; Titanium; 2 Bolt; 4 in. Wall Thickness;Vibrant Performance 304 Stainless Steel 2 Bolt Exhaust Flanges for round tubing are available...