The Yamaha DT50MX is the most common 50cc in the Yamaha DT series. It superseded the DT50M when introduced in June 1981 and can easily be identified by its Mono-Cross(MX) rear suspension with a silver painted square-section rear swinging arm. The 'MX' designation was commonly used on Yamaha motorcycles fitted with the 'Mono-Cross' rear suspension, which was the first to employ a single shock absorber. It remained in production largely unchanged until 1996, gaining only a CDI ignition system and a change to square bodied direction indicator lights in 1986 with the introduction of the 2FN model. The moped is very common in Scandinavia where its leading competitor was the Honda MT50.
Intake was by means of either a Mikuni vm18 smoothbore flatslide or a TK carburettor and the exhaust was an expansion chamber type with interchangeable addons (BigOne and DEP manufactured an improved system),
There was also a Paris Dakar style bodykit available which featured a wraparound fairing, different side panels and a tank cover although these are now getting hard to find