The Zundapp engine with the largest cubic cylinder capacity was the K 800. This engine was preceded by the smaller K 600. The K 600 was also a 4 cylinder engine according to the four-stroke principle. Of this smaller cylinder model K 600 (598 cc, 15 hp, 100 km / h and 193 kg heavy), only 26 units were produced in 1933 and 1934. Cardan drive, sheet steel Kastenrahme frame.