Our Exhaust Flanges are made with the highest quality 8mm Mild Steel or Stainless Steel Universal exhaust flanges are used when fabricating an exhaust system. It is recommended to have your exhaust in sections to enable ease of fitment. These flanges can also be used for external waste gate pipes as well Sold as a pair and includes a composite gasket with a fire ring (except 3.5inch has no gasket) Option to add bolts in two different sizes - M10 x30 or M10 x40 (grade 8.8 serrated flange head bolt/nut) 2.5 inch exhaust flange Centre hole = 65mm Bolt Centres = 78mm 3 inch exhaust flange Centre hole = 77mm Bolt centres = 87mm 3.5 inch exhaust flange (no gasket/stainless steel only) Centre hole = 89mm Bolts Centres = 92mm Looking for a specific flange that we don't currently have in stock? No problem! Simply inform us and we can draw one up from a sample and cut it to your exact specifications.