PIAGGIO VESPA
VESPA GS150 - 150cc
AUTHENTIC
This 1957 Vespa GS150 represents the second-series Gran Sport, one of Piaggio's most important sporting Vespa models of the 1950s. With its streamlined wideframe body, four-speed manual transmission and 10-inch wheels, the GS150 was developed as a high-performance Vespa for its era. This example is finished in silver and has been restored for collectors and enthusiasts looking for an authentic Italian classic.
The 1957 model belongs to the VS3T series, retaining the characteristic 145.6cc two-stroke GS engine, Dell'Orto UB23 S3 carburetor and four-speed gearbox that distinguished the Gran Sport from the standard Vespa range.
Year
1957
Model
GS150
Model Series
VS3T
Color
Silver
Condition
RESTORED
Stock Number
HCH06
Origin
Made in Italy
USD 3,450
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Technical Details
Manufacturer
Piaggio
Model
Vespa GS150 Gran Sport
Model Code
VS3T
Engine Code
VS3M
Production
1957
Series
Second Series / MK2
Engine Type
Single-cylinder, air-cooled, 2-stroke
Induction
Piston ported
Transfer Ports
2
Displacement
145.6 cc
Bore × Stroke
57 × 57 mm
Compression Ratio
6.7 : 1
Carburetor
Dell'Orto UB 23 S3
Main Jet
103
Mixer
2.60
Needle Position
3
Slow Running Jet
45
Maximum Power
8 hp @ 7,500 rpm
Transmission
4-speed constant mesh
Gear Ratios
1st 14.72 · 2nd 10.28 · 3rd 7.61 · 4th 5.84
Clutch
Wet multi-plate
Lubrication
6% oil mixture
Ignition
Contact breaker & coil
Ignition Timing
31° BTDC
Breaker Gap
0.4 mm
Electrical System
6V
Maximum Stator Output
6V / 32W
Cooling
Forced air
Starting System
Kick start
Frame
Pressed-steel wideframe monocoque
Front Suspension
Coil spring with hydraulic shock absorber
Rear Suspension
Coil spring with hydraulic shock absorber
Front Brake
Drum
Rear Brake
Drum
Wheels
10-inch
Tires
3.50 × 10
Wheel Hubs
Pressed steel
Fuel Tank
Approx. 9.5 litres
Wheelbase
Approx. 1,180 mm
Width
Approx. 700 mm
Seat Height
Approx. 800 mm
Weight
Approx. 104 kg
Maximum Speed
Approx. 100 km/h
