Żak MR2 from 1962 („żak" is an old-fashioned word for „student"). This is luxus version with Ryś lamp housing (see: Ryś 1959). Żak was built in years 1960-1963 in Zakłady Wyrobów Metalowych (ZWM) in Wrocław-Zakrzów. It was fitted with two-stroke, one-cylinder SM38 engine, manufactured by Dezamet in Nowa Dęba. Displacement: 49,8 cm3. Power output: 1,8 HP at 5000 rpm. Top speed: 55 kph, fuel usage: 2 ltr/100 km. See also: Żak (basic model)
Żak was designed by ZWM engineers in 1959, mass production started in 1960. It was simpler, cheaper version of Ryś motorbike. To cut down the production costs deep mudguards and side panels were removed, together with lamp housing. With shallow bicycle fenders and bicycle seat Żak MR2 costed only 5000 zloty. There was also more luxurious version of Żak available, with chrome wheel rims and lamp housing preserved. Both models, Ryś and Żak were discontinued in 1965. On 15th May 1965 Polish goverment decided to entrust the whole motorbike production to Bydgoszcz works.