Junak is a brand Polish motorcycles, the only
four-stroke models produced in Poland between World War II and Revolution of
1989. The name literally means "brave young man". Produced by Szczecińska
Fabryka Motocykli (SFM) (English: Szczecin Factory Motorcycles) in five
variants: M07, M10, B20 , WB1 and WB3.
During the nine years of production,
1956-1965, a total of 91,400 Junak motorcycles were produced. Several models
were produced, namely: 10,000 tourist M07, rally M07-R and cross M07-C models,
2500 three-wheeled B20’s, 8500 sidecars type WB1 and W03 while the rest were M10
The Junak frame was produced by SFM in
Szczecin while the engines were made by ZSM in Łódź. During the transition from
model M07 to M10 from 1960 to 1961 about 20,000 M10 models possessed some
characteristics of the M07 model such as the headlight housing. These are called
the transition or in Polish “przejsciowka” models.
The Junak was designed in 1951-1952 in Biuro
Konstrukcyjne Przemysłu Motoryzacyjnego (Automotive Industry Design Bureau)
under the leadership of J. Ignatowicz. At that time Junak was superior to many
well known motorcycles. This was not surprising since experienced engineers
designed the Junak basing their knowledge on T. Rudawski’s group. T. Rudawski
was the father of pre WWII Sokół motorcycles, which is also the reason why the
Junak engine has many characteristics of the Sokół 600 and 500.
The governing system and inconvenient
localization of the production line led to difficulties in ensuring quality. The
same reasons hindered the production of the newer engines S130, S131, and S132.
At the time of production, Junak was a very
expensive motorcycle for a common Polish worker. Eventually, a crash in the
sales of large motorcycles led to a halt in production in 1965. Junak is called
by some “the Polish Harley”, being the heaviest Polish post-war motorcycle,
recognized today commonly as a classic in Poland. Despite some of its
shortcomings Junak found many fans. Its characteristic exhaust and loud valve
train are easily recognized, which is another similarity with the Sokół and the
only with the Harley. Half a century later the Junak is still the most advanced
Polish motorcycle in the heavy category as no other models were produced.
Since 2010, the company Almot manufactures
motors with brand of Junak.