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Vespa Specifications

Vespa 125 GT Sprint (1966-73)

Entry updated

At a glance

Capacity
121.2 cc / 7.4 cub in
Power
3.4 kW / 4.6 hp

The full picture.

The Vespa 125 GT Sprint motorcycle was produced from 1966 to 1973, and variants included the GTR, TS, Primavera ET3, and P125X. The engine was a two-stroke, single-cylinder with a capacity of 121.2cc and a maximum power output of 3.4 kW. It featured a Dell’Orto SHB 16/16 carburetor, air cooling with a centrifugal fan, and a fuel mixture of 1:50. The motorcycle had kick-start starting and a 6V battery, and the clutch was multiplate. The 4-speed, grip-shift, constant mesh transmission had direct drive final drive. The frame was made of pressed sheet steel with a streamlined monocoque structure, and the suspension included elastic with coil springs and hydraulic shocks on the front and rear. Drum brakes were used on both the front and rear, and the interchangeable wheels were fitted with 3.0 x 10″ tyres. The dry weight of the motorcycle was 73 kg, and the fuel tank had a capacity of 5.5 L. With an average consumption of 2 L/100 km, the Vespa 125 GT Sprint could travel up to 85 km/h and had a top speed of 53 mph. The motorcycle was only available in white. Sources of information include Wikipedia and Vespafan.ch.


Technical specifications:

Make Model: Vespa 125 GT/Sprint, GTR, TS, Primavera ET3, P125X

Motorcycle technical specifications
Year1966 – 73
EngineTwo stroke, single cylinder
Capacity121.2 cc / 7.4 cub in
Bore x Stroke52.5 x 57 mm
CarburetorDell’Orto SHB 16/16
CoolingAir cooled, centrifugal fan
Fuel Mixture1:50
StartingKick start
Battery6V
ClutchMultiplate
Max Power3.4 kW / 4.6 hp
Transmission4 Speed, grip-shift, constant mesh
Final DriveDirect drive
FramePressed sheet steel, streamlined monocoque structure
Front SuspensionElastic with coil spring and hydraulic shock
Rear SuspensionElastic with coil spring and hydraulic shock
Front BrakesDrum
Rear BrakesDrum
WheelsInterchangeable
Front Tyre3.0 x 10″
Rear Tyre3.0 x 10″
Dry Weight73 kg / 161 lbs
Fuel Capacity5.5 L / 1.5 US gal
Consumption average2 L/100 km / 50 km/l / 117 US mpg
Top Speed85 km/h / 53 mph
ColoursWhite
SourcesWikipedia, Vespafan.ch