Originally designed by Lino Tonti in 1960 as a 250, that bike proved to be too heavy for its capacity. A 350 version was soon introduced later the same year and it proved to be quite competitive. A 454cc version was debuted at the end of 1961 and was raced for the next few years with Remo Venturi winning the 1964 Italian title. The Bianchi was the forerunner to the Patton 500 twin.