| MODEL | VESPA 50 1963 - 1990 |
| Year | 1963 - 1990 |
| Engine Type | Two stroke, single cylinder |
| Displacement / Capacity | 49.8 cc / 3.0 cu in |
| Bore X Stroke | 38.4 x 43 mm |
| Compression Ratio | 7.2:1 |
| Cooling System | Air cooled with centrifugal fan |
| Max Power | 1.9 kW / 2.6 hp @ 4500 rpm |
| Max Torque | — |
| Ignition | 4 pole flywheel magneto |
| Induction | — |
| Start System | Kick start |
| TRANSMISSION SPECS | |
| Lubrication | — |
| Gear Box | 3 speed, constant mesh (1st 22.33 / 2nd 12.56 / 3rd 7.95:1) |
| Clutch | Multi plate |
| Final Drive | Direct drive |
| CHASSIS SPECS | |
| Frame | Pressed sheet steel with streamlined monocoque structure |
| Front Suspension | Hydraulic shock absorber with rubber elements |
| Rear Suspension | Hydraulic shock absorber |
| Front Brakes | Drum |
| Rear Brakes | Drum |
| DIMENSION SPECS | |
| Overall Length | 1630 mm / 64.2 in |
| Overall Width | — |
| Overall Height | 980 mm / 33.6 in |
| Seat Height | — |
| Wheelbase | — |
| Ground Clearance | 210 mm / 8.3 in |
| Dry Weight | 67.5 kg / 148 lbs |
| Wet Weight | — |
| WHEEL SPECS | |
| Front Tyre | 2.75 x 9 in |
| Rear Tyre | 2.75 x 9 in |
| FUEL SYSTEM | |
| Fuel Capacity | 5.6 Litres / 1.5 US gal |
| Fuel Consumption | 1.5 L/100 km / 66.7 km/l / 157 US mpg |
| Top Speed | 40 km/h / 29 mph |
Introduced in 1963 as a small-frame, 49.8 cc two-stroke scooter, it was aimed at young riders because Italian rules let those aged 14 and over ride sub-50 cc machines without a plate or licence. It had a lighter, self-supporting steel body than the bigger Vespas and a modest 2.6 hp engine. The platform lived on in the PK 50 until the 1990s, with hotter S, SS and SR versions along the way.
