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← Lambretta
Scooter · 1969

GP 125

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MotoLibrary Score
36 /100 Commuter
Power/Weight
0.07 hp/kg
Top Speed
87 km/h
Engine
123 ccm

1969 Lambretta GP 125 Technical Analysis & Specification Breakdown

Built around Lambretta's scooter motorcycle platform, the 1969 Lambretta GP 125 relies on a 123 cc (7.5 cu in) air-cooled single cylinder, two-stroke powerplant. In factory specification, peak output is rated at 7.3 HP (5.3 kW) at 6,200 rpm, transferring power to the rear wheel through chain final drive. With a specific output of 59.3 HP per liter, the engine character is prioritizing low-RPM tractability, mechanical longevity and relaxed throttle response over peak redline numbers.

On the scales, the GP 125 measures 105.2 kg (232 lbs) dry, translating to a power-to-weight ratio of 0.07 HP/kg (14.41 kg per horsepower).

Specific Output
59.3 HP/L
Power-to-Weight
0.07 HP/kg (14.41 kg/HP)
Engine
Displacement 123.0 ccm (7.51 cubic inches)
Engine Type Single cylinder, two-stroke
Engine Details Single cylinder, two-stroke
Power 7.3 HP (5.3 kW)) @ 6200 RPM
Compression 7.8:1
Bore x Stroke 52.0 x 58.0 mm (2.0 x 2.3 inches)
Fuel System Carburettor. DellÓrto
Ignition Magneto
Cooling Air
Transmission
Final Drive Chain (final drive)
Performance
Top Speed 86.9 km/h (54.0 mph)
Wheels & Brakes
Front Tyre 3.50-10
Rear Tyre 3.50-10
Front Brakes Expanding brake (drum brake)
Rear Brakes Expanding brake (drum brake)
Dimensions & Weight
Dry Weight 105.2 kg (232.0 pounds)
Power/Weight 0.0694 HP/kg
Other
Starter Kick
More from Lambretta
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Brakes
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Who Is This Bike For?

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Beginner
A2 license compatible, manageable power.
🏙️
Best For
City & Commuting
⚖️
Handling
Very lightweight — easy to handle
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