Gilera Motorcycles

Today in Motorcycle History

Gilera 175 Regolarità Super Sport 1956

Throughout the early 1950s it was Gilera's road-racers that grabbed the headlines just as they had in pre-war days, winning the 500cc World Championship on no fewer than six occasions between 1950 and 1957.

Following its withdrawal from Grand Prix road racing, Gilera turned increasingly to off-road competition, principally the International Six Days Trial, as a means of keeping its name in the public eye.

Regolarità (Regularity) 'Six Days' enduro models were offered in 98cc, 125cc and 175cc capacities, all equipped with the necessities for off-road competition: 21" front wheel, 'knobby' tyres, upswept exhaust, wide handlebars and generous ground clearance.


Engine: Single cylinder four-stroke OHV

Bore & stroke: 60 x 61 mm

Compression ratio: 10:1

Engine Capacity: 175cc

Maximum power: 11.5 h.p. @ 8,500 rpm

Valves per cylinder: 2

Carburettor: Dell'Orto UB 24 BS

Cooling system: Air cooled

Lubrication: Wet sump forced circulation with mechanical gear pump, cup capacity 1.6 litres

Transmission: Gear primary, chain final

Clutch: Cable operated with multiple wet disc in oil bath

Gearbox: 5-Speed foot-change

Starter: Kick-starter

Throttle: Cable operated

Frame type: Double cradle open in steel tubes, sleeve inclination 27 °

Front Suspension: Telescopic fork and shock absorbers

Rear Suspension: Swingarm with hydraulic shock absorbers

Front Brake: Drum

Rear Brake: Drum

Front Tyre: 2.75 x 21 in.

Rear Tyre: 2.25 x 21 in.

Seat: Dual seat

Fuel tank capacity: 10 litres

Fuel consumption: 3.5 litres per 100 km.

Top speed: 100 Km/h (62 mph)

Source: Hessink's NL

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