From the outset, CMK specialized in small displacement classes (50 cm³, 60 cm³, 100 cm³) for off-road competition. In its early days, the company stood out because Otto Kohler designed and built the frames himself, while the engines were based on modified Zündapp models equipped with CMK's own cylinder kits (Gruppi termici).

Sources:

• Moto di Lombardia (Archivio Storico): Documentation on the CMK brand and its origins in Rivoltella del Garda (1967).
• WOI Encyclopedia Italia: Historical overview of the collaboration between Otto Kohler and engine manufacturing for the German market.
• Registro Storico Gabor / CMK: Records of the technical development of Zündapp-based CMK machines from the late 1960s onwards.