It is a four stroke motorcycle produced in Poland, first produced from 1956 to 1959. Known for its unique design and manufacturing process, it features a 349cc single cylinder OHV engine with a maximum output power of 19 horsepower. The design includes an air/oil cooling system, dry oil sump lubrication, magnetic motor ignition, and a four speed constant mesh gearbox. The frame is made of double cradle type welded steel pipes, specially designed with side car mounting points. It is also equipped with front fork front suspension and rear swing arm suspension, both of which use spring shock absorption and hydraulic shock absorption. The framework is adapted to a four point side car connection, achieved through two spherical handles and two brackets.

It is a 175cc touring motorcycle developed by Wytw ó rnia Sprz ę tuKomunikacyjnego company located in Ś widnik, Poland in the late 1970s. The design was based on the standard model M21W2 at the time and featured some unique design elements, including a new dual frame, larger brake drums, and a cast fork with progressive shock absorption response. Not only does it represent the industrial design of that era, but it is also an important symbol in the history of Polish motorcycle manufacturing.