MZ RT 125
MZ and Industrieverband Fahrzeugbau both produced an RT 125 in the 1950s and early 1960s.
The RT 125 is probably the most copied motorcycle of all time. After World War II the Soviet Union took plans, tooling and even several dozen personnel as war reparations to MMZ (later transferred to MMVZ and SMZ). WFM of Poland made a modified version of the RT125/RT175 which in turn was made in India until the 1990s by the Escorts group. RT 125 plans were also taken to the United Kingdom where they became the basis of the BSA Bantam, and to the USA where they formed the basis of the Harley-Davidson Hummer. Later Yamaha in Japan copied the RT 125 as the basis of the Yamaha YA1.