 In 1977, together with his sons Carlo and Giovanni, he started his own business building special parts for the MV Agusta range of motorcycles in his workshop, the "Elaborazioni Preparazioni Magni" (EPM).In particular, the most challenging transformation and most in demand by customers consists in replacing the heavy shaft drive of the four-cylinder 750 with a more sporty chain final drive.Later he built his first chassis, in Cr-Mo tubes, around the four-cylinder MV Agusta.