| MODEL | DUCATI 55 1955 - 1957 |
| Year | 1955 - 1957 |
| Engine Type | Four stroke, single cylinder, OHV, pushrod |
| Displacement / Capacity | 48 cc / 2.9 cu in |
| Bore X Stroke | 39 x 40 mm |
| Compression Ratio | 6.71:1 |
| Cooling System | Air cooled |
| Max Power | 1.0 kW / 1.35 hp @ 5500 rpm |
| Max Torque | — |
| Ignition | 6V 12W generator |
| Induction | Weber 14 MFC |
| Start System | Kick |
| TRANSMISSION SPECS | |
| Lubrication | — |
| Gear Box | 2-Speed |
| Clutch | — |
| Final Drive | Chain |
| CHASSIS SPECS | |
| Frame | Open spine pressed steel |
| Front Suspension | Telescopic fork |
| Rear Suspension | Twin hydraulic shocks, swingarm |
| Front Brakes | Drum |
| Rear Brakes | Drum |
| DIMENSION SPECS | |
| Overall Length | 1700 mm / 66.9 in |
| Overall Width | — |
| Overall Height | 1000 mm / 39.4 in |
| Seat Height | 840 mm / 33.1 in |
| Wheelbase | 1090 mm / 42.9 in |
| Ground Clearance | — |
| Dry Weight | 45 kg / 99 lbs |
| Wet Weight | — |
| WHEEL SPECS | |
| Front Tyre | 2.00 - 18 |
| Rear Tyre | 2.00 - 18 |
| FUEL SYSTEM | |
| Fuel Capacity | — |
| Fuel Consumption | — |
| Top Speed | 48 km/h / 29.8 mph |
The 55 was the last of the Cucciolo-derived mopeds, keeping the 48 cc four-stroke engine but fitted to a new open-spine pressed-steel frame with leading-link front forks. The 55E added rear suspension, while the 55R kept a rigid rear end. More than 400,000 Cucciolo-family machines were built before production ended around 1957.
