These are the known mechanical and performance specifications for your 1969 Lambretta GP 125.
Basic Specs

Engine
Displacement123.00 ccm (7.51 cubic inches)
Type
DetailsSingle cylinder, two-stroke
Max RPM
Compression7.8:1
Bore/Stroke52.0 x 58.0 mm (2.0 x 2.3 inches)
Valves/Cylinder
FuelingCarburettor. DellÓrto
IgnitionMagneto
Exhaust
Lubrication
CoolingAir
Performance
Horespower7.30 HP (5.3 kW)
Torque
Top Speed86.9 km/h (54.0 mph)
Chassis
Frame Type
Rake
Trail
Front Suspension
Front Travel
Rear Suspension
Rear Travel
SeatDual
Seat Height
Alt. Seat Height
Total Height
Total Length
Total Width
Ground Clearance
Wheelbase
Dry Weight105.2 kg (232.0 pounds)
Wet Weight
Wheels & Brakes
Front Tire/Tyre3.50-10
Rear Tire/Tyre3.50-10
Front BrakesExpanding brake (drum brake)
Front Brake Diameter
Rear BrakesExpanding brake (drum brake)
Rear Brake Diameter
Wheels
Comments