Categories: Ducati

Ducati 125 Gran Sport Marianna (1955)

The Ducati 125 Gran Sport “Marianna” motorcycle was produced in 1955 and has a four stroke, single-cylinder, OHC engine. With a capacity of 122cc, it has a compression ratio of 8.5:1 and is cooled by air. The motorcycle uses a Dell’Orto SS1 carburetor and a battery and coil ignition system. The kick start engine has a max power of 8.9 kW at 9800 rpm and is fitted with a 4-speed transmission and wet, multi-plate clutch. The bike comes with hydraulic telescopic forks for its front suspension and swingarm dual shocks for its rear suspension. Its front and rear brakes consist of drum brakes, Amadori. With its 2.50-18 front and rear tires and a wheelbase of 1250mm, the bike has a dry weight of 85kg and a fuel capacity of 16 liters. The 125 Gran Sport Marianna has a top speed of 150km/h (93mph).


Technical specifications:

Make Model: Ducati 125 Gran Sport “Marianna”

Year: 1955

Engine: Four stroke, single-cylinder, OHC, driven by shaft and gevel gears, 33 mm inlet valve, 29 mm exhaust valve

Capacity: 122 cc / 7.4 cu in



Bore x Stroke: 55.5 x 52 mm

Compression Ratio: 8.5:1

Cooling System: Air cooled

Lubrication System: Forced oil sump

Induction: Dell’Orto SS1 carburetor

Ignition: Battery and coil

Starting: Kick

Max Power: 8.9 kW / 12 hp @ 9800 rpm

Transmission: 4 Speed

Clutch: Wet, multi-plate

Final Drive: Chain

Front Suspension: Hydraulically damped telescopic forks

Rear Suspension: Swingarm, dual shocks


Front Brakes: Drum, Amadori

Rear Brakes: Drum, Amadori

Front Tyre: 2.50 -18

Rear Tyre: 2.50 -18

Wheelbase: 1250 mm / 49.2 in

Dry Weight: 85 kg / 187 lbs

Fuel Capacity: 16 L / 4.2 US gal / 3.5 Imp gal

Top Speed: 150 km/h / 93 mph
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