Tag Archives: Benelli 175 Bialberos

Benelli 175 Bialbero racer

Benelli 175 Bialbero

With Phil Aynsley


There isn’t much technical information of this Benelli but it is such a gem that I hope the pictures tell us the story!

PA Benelli Bialberos Dorino Serafini
Dorino Serafini’s Benelli 175 Bialbero racer
PA Benelli Bialberos Dorino Serafini
Benelli 175 Bialbero

This is one of only two or three 175 Bialbero (DOHC) race bikes constructed during 1931-34 and was raced by Dorino Serafini.

PA Benelli Bialberos Dorino Serafini
Benelli 175 Bialbero
PA Benelli Bialberos Dorino Serafini
Benelli 175 Bialbero

Antonio Benelli wasn’t old enough to join his other brothers, working in their motorcycle, car and gun repair business, but by the early 1920s became the racer of the family, promoting the capabilities of their own designs.

PA Benelli Bialberos Dorino Serafini
Benelli 175 Bialbero
PA Benelli Bialberos Dorino Serafini
Benelli 175 Bialbero

In 1927 Giuseppe Benelli designed a gear-driven SOHC 175 cc that allowed “Tonino” to win the company’s first international race the Monza Grand Prix as well as the ’27, ’28 and ‘30 175cc Italian Championships.

PA Benelli Bialberos Dorino Serafini
Benelli 175 Bialbero

A redesign in 1931 saw a DOHC version take to the track to great success over the next few years. It was originally equipped with a three-speed hand gear change (as seen on this bike) but a four-speed foot change was employed in 1932.

PA Benelli Bialberos Dorino Serafini
Benelli 175 Bialbero

The Bialbero went on to win GPs in France, Belgium, Holland and Switzerland before the FIM abolished the 175 cc class at the end of the 1934 season.

PA Benelli Bialberos Dorino Serafini
Benelli 175 Bialbero

The 175 Bialbero made 15 hp at 9000 rpm and weighed just 93 kg, with a top speed of 140-150 km/h.

PA Benelli Bialberos Dorino Serafini
Benelli 175 Bialbero

Source: MCNews.com.au