The 175cc class had been popular before the war, and by the mid 1950s it was enjoying a revival in Italy, this due in part to the many competition activities for that engine size.
Gilera introduced its 175 in 1956. Initially called the 175 V it was soon renamed G 175 which then became the Normale, and this base model was soon joined by Sport and Super Sport versions. The 175 stayed in production until 1960, by which time about 10,500 had been built.
In 1956 Gilera also built a few 175 Regolaritas which were entrusted to the factory’s official riders, and the following year a small number were produced for general sale. It was one of the first Gileras to be built specifically for regularity trials and it featured a number of modifications for off-road use such as increased ground clearance, an air filter, raised mudguards and so forth. Powered by a 10bhp 175cc 4-stroke single, the Regolarita was good for 68mph (110km/h).
The matching-numbers Gilera here is a 175 Sport converted in period to the Regolarita configuration. Restored about 10 years ago, it formed part of the most important Italian collection of off-road bikes in Italy and was ridden in many retrospective events. It then passed to another collector and was the subject of further restoration work in 2014.