Belgian FN model M67 racer. This is a 500cc OHV from 1930 in racing execution. This engine also has the large FN tank for long distance racing. This model of tank can also be seen on a picture in the FN book page 91. Engine is in good running condition but needs some tuning on carburetor. In September this motorcycle was part of the "Hand shifter run" in Austria. A mountain ride over the Timmelsjoch alpine pass to Italy at 2509 meters altitude.