| MODEL | VESPA 125 1948 - 1950 |
| Year | 1948 - 1950 |
| Engine Type | — |
| Displacement / Capacity | 124.8 cc / 7.6 cu in |
| Bore X Stroke | 56.5 x 49.8 mm |
| Compression Ratio | 6.5:1 |
| Cooling System | Air cooled |
| Max Power | 2.6 kW / 3.5 hp @ 4500 rpm |
| Max Torque | — |
| Ignition | Magneto |
| Induction | — |
| Start System | Kick start |
| TRANSMISSION SPECS | |
| Lubrication | — |
| Gear Box | 3 speed, grip shift |
| Clutch | Multi plate, oil bath |
| Final Drive | Direct drive |
| CHASSIS SPECS | |
| Frame | — |
| Front Suspension | Trailing arm with coil spring |
| Rear Suspension | Coil spring with damper |
| Front Brakes | 125 mm drum |
| Rear Brakes | 125 mm drum |
| DIMENSION SPECS | |
| Overall Length | 1655 mm / 65.2 in |
| Overall Width | 790 mm / 31.1 in |
| Overall Height | — |
| Seat Height | 790 mm / 31.1 in |
| Wheelbase | 1130 mm / 44.5 in |
| Ground Clearance | — |
| Dry Weight | 77.5 kg / 170.8 lbs |
| Wet Weight | — |
| WHEEL SPECS | |
| Front Tyre | 3.5 x 8 in |
| Rear Tyre | 3.5 x 8 in |
| FUEL SYSTEM | |
| Fuel Capacity | 5 Litres / 1.3 US gal |
| Fuel Consumption | 2 L/100 km / 50 km/l / 118 US mpg |
| Top Speed | 70 km/h / 43.5 mph |
The first 125 followed the 98 and brought rear suspension and a larger engine. Aircraft-style front suspension, a unit engine and gearbox with no chain, and quick-release car-style wheel nuts made it practical. The 1949 model added a centre stand and key lock; the 1950 model got a new carburettor, silencer and adjustable headlight. Nicknamed the Fenderlight 125.
