A big mistake in the technical datas. Not 2-stroke. 4-stroke!!! The Heinkel scooters after 1953 were the only german manufacturer with 4-stroke engines. The early modells with 150cc, from 57´or 58´on with 175cc. Even available with side car. Very famous for small families who go over the alps to Italy or spain for holiday. The Heinkel owner club is one of the biggest classic motorcycle clubs in the world. The club can deliver every spare part for reasonable money.