By 1932 the Centralne Warsztaty Samochodowe works prepared a short series of roughly 200 CWS M55 motorcycles equipped with a sidecar.

In 1931 it was decided at Państwowe Zakłady Inżynierii to prepare a completely new heavy motorcycle for the use of the Polish Army.

[2] Subsidized by the state, the PZInż holding extensively tested and modified the earlier M55 design to fit the specifications.

Initially named CWS M III, the new construction was to be reliable, user-friendly, and immune to harsh conditions and bad service.

Among the most notable innovations introduced in the Polish construction was a soft sidecar mounting, which allowed for easier handling and greater off-road speed.