Exhaust flange to weld on for Quattrini M232 and M244. For retrofitting the exhaust systems of the PX200 class. Due to the O-ring and the integrated clamping is a very good seal and secure the exhaust system on the exhaust port of the cylinder. We recommend to check the fit on the respective cylinder used before mounting. The included O-ring made of FPM material is resistant up to 240°C, against oils and fuels. When processing the exhaust flange, the O-ring should not be mounted, as high temperatures occur during welding.