Junak B20, a three-wheel transport version of Polish Junak motorcycle, based on serial M10 model. From 1960 to 1965 about 2500 units were built, 153 of them were exported. Very few B20 are preserved.
The B20 proved to be superior to B21, with greater top speed (75 km/h when compared with 60 km/h) and possibility to carry 300 kg of load, when the own weight of the three-wheel vehicle was 320 kg. Fuel usage was about 5,7 l/100 km.