During the late 1920s and 1930s, German brand DKW was the world’s largest motorcycle manufacturer. Das kleine Wunder, or „The little wonder” was the name of the first two-stroke engine used in a DKW motorcycle. The V-twin produced 15 hp. On the promotional film clips, you can see the factory production line and the complete build of the two-stroke engine. Workers are shown arriving on their motorbikes and testing the newly built machines on the road. Enjoy!