Vespa 125




Make Model

Vespa 125, P125X, PX 125, PX 125 Arcobleno/Lusso, PK125 S, GTS Super


1977 - 97


Two stroke, single cylinder


123.4 cc 7.5 cub in
Bore x Stroke 52.5 x 57.0 mm
Carburetor Dell,Orto SI 24/24 E
Compression Ratio 9.2:1
Cooling Air cooled, centrifugal fan

Fuel Mixture


Spark Plug

Champion N2C


Flywheel alternator, with built in H.T. coil
Starting Kick start
Clutch Multiplate

Max Power

5.9  kW / 8 hp @ 5800 rpm

Max Torque

10.5  kW / 1.07 kgf-m / 7.7 ft/lb @ 4500 rpm


4 Speed, grip-shift, constant mesh
Gears 1st 16.4 / 2nd 11.0 / 3rd 7.60 / 4th 5.8:1
Final Drive Direct drive


Pressed sheet steel, streamlined monocoque structure

Front Suspension

Helical spring and double acting hydraulic dampers

Rear Suspension

Helical spring and double acting hydraulic dampers

Front Brakes

Drum, 125 mm

Rear Brakes

Drum, 125 mm
Wheels Interchangeable

Front Tyre

3.5 x 10"

Rear Tyre

3.5 x 10"


Length:  1655 mm / 65.2 in

Width:      790 mm / 31.1 in

Height:   1170 mm / 46.4 in

Wheelbase 1250 mm / 49.2 in
Turning Radius 1650 mm / 65.0 in.

Dry Weight

112 kg / 247 lbs

Fuel Capacity 

8 L / 2.1 US gal


1.2 L / 0.55 US gal

Consumption  average

2,7 L/100 km / 37 km/l / 87 US mpg

Top Speed

100 km/h / 62 mph


White, Red, Black, Blue, Yellow


Specifications for the Corsa 125 (1988 - 98)



The Vespa P125X was presented in 1977 at the Milan Motorcycle Exhibition as the Vespa “Nuova Linea” (New Line). The P125X is the result of particularly successful and innovative restyling, which takes it into the 80s and makes a break with earlier models. The Vespa P125X becomes the object of desire of the young, competing with the strongly demanded 125 motorcycles. Its square shape and larger dimensions make this vehicle seem more solid and tough, offering on the whole a better driving comfort. The storage is larger, and the foam polyurethane saddle is more comfortable. The handlebar displays a totally re-styled speedometer easily visible by night too. The front suspension is very innovative and efficient, and is characterized by a telescopic shock absorber fixed to the brake shoe holder and to the oscillating lever near the wheel pivot: this solution eliminates the unpleasant sinking during the braking. Furthermore, the front fender features a new styling that leaves space to the wheel suspension. The Vespa PX is one of the most successful models ever to be produced by Piaggio, as a matter of fact, despite its 27 years of age it is still in production with almost imperceptible aesthetical and mechanical changes.