version had a 99-cc 5.15-hp engine and the Sport version had a 99-cc 6.5-hp engine. In 1962, the family was supplemented the GTL version with a 125-cc 5.5-hp engine. The family was in production for totally 9 years, however it had no big commercial success. The 1958 Italian Road Law (Italian: Codice della strada) defined a new category "ciclomotore": a two- or three-wheeled vehicle with engine capacity 50 cc or less and speed 40 km/h or less. Italian motorcycle industry saw in the new law an opportunity to attract younger riders’ audience. MV Agusta from its side presented Liberty family in 1962. In fact, it was the same Checca, but even more lightweight and simplified, with a 47.7-cc 1.5-hp engine at 4,500 rpm. An interesting fact that sales of the Liberty Sport version significantly exceeded the sales of the basic Liberty Turismo. After the 1957 season, the Italian motorcycle manufacturers Gilera, Moto Guzzi and Mondial jointly agreed to withdraw from Grand Prix competition due to escalating costs and diminishing sales. Count Agusta originally agreed to withdraw, but then had second thoughts. MV Agusta went on to dominate Grand Prix racing, winning 17 consecutive 500-cc world championships. Count Agusta's competitive nature drove him to hire some of the best riders of the time, including Carlo Ubbiali, John Surtees, Mike Hailwood, Giacomo Agostini, Phil Read, and the best engineers, in particular Arturo Magni. The three- and four-cylinder race bikes were known for their excellent road handling. The fire-engine red racing machines became a hallmark of Grand Prix racing in the 1960s and early 1970s. In the early 1960s, MV Agusta decided to return to offroad sport (at the end of the 1950s, MV racers were successful in enduro races, including in the famous Six Days race). A new 125 Regolarita was created by order of Fiamme Oro team. The model was equipped with a 125-cc engine boosted up to 12.5 hp and a five-speed gearbox. Traditionally light MV frame was reinforced with a lower subframe, becoming closed. 19-inch wheels got offroad tyres. This motorcycle became successful, so tens such motorcycles were also sold amateur racers. Moreover, a five-speed gearbox has become standard for 125-cc and 150-cc road motorcycles since 1966, the factory line-up was supplemented by the Scrambler version. The main MV premiere at the 1965 EICMA Milan Motorcycle Show was the flagship model 600 with an inline-four 590-cc engine. Such significant