GILERA 150 REGOLARITÀ SUPER SPORT

Engine: Single cylinder 4-stroke OHV
Starter: Kick-starter
Bore & stroke: 60 x 61 mm
Compression ratio: 10:1
Engine Capacity: 175cc
Maximum power: 11.5 bhp [HP] @ 8,500 rpm
Valve: OHV (Overhead Valves)
Valves per cylinder: 2
Carburettor: Dell O’rto UB 24 BS
Cooling system: Air cooled
Lubrication: Wet sump forced circulation with mechanical gear pump, cup capacity 1.6 liters
Transmission: Gear primary, chain final
Clutch: Cable operated with multiple wet disk in oil bath
Gearbox: 5-Speed foot-change
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 Inches
Rear Tyre: 2.25 x 21 Inches
Seat: Dual seat
Fuel tank capacity: 10 Liter
Fuel consumption: 3.5 liter per 100 km.
Top speed: 100 Km/h (62 mph)

Throughout the early 1950s it was Gilera's road-racers that grabbed the headlines as they had in pre-war days, winning the 500cc World Championship on no fewer than six occasions between 1950 and 1957. But although racing generated valuable publicity, it was sales of road bikes that paid the bills. The majority of machines sold were lightweights based on the overhead-valve 125cc single that had appeared in prototype form in 1948. Developed and enlarged first to 150cc and then 175cc and beyond, these simple OHV singles proved top sellers throughout the 1950s and 1960s.

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.

Before then though, the Arcore firm had relied on developments of its traditional single-cylinder 4-stroke roadsters, such as the 150cc five-speed model offered here. Regolarità (Regularity) 'Six Days' enduro models were offered in 98cc, 125cc and 175cc capacities, all equipped with the necessities of off-road competition: 21" front wheel, 'knobbly' tyres, upswept exhaust, wide 'bars and generous ground clearance.