| MODEL | VESPA PK 125ETS 1984 - 1985 |
| Year | 1984 - 1985 |
| Engine Type | Two stroke, single cylinder |
| Displacement / Capacity | 121.2 cc / 7.4 cu in |
| Bore X Stroke | 55 x 51 mm |
| Compression Ratio | 9.5:1 |
| Cooling System | Air cooled with centrifugal fan |
| Max Power | 6.2 kW / 8.6 hp @ 6000 rpm |
| Max Torque | — |
| Ignition | Electronic |
| Induction | — |
| Start System | Kick start |
| TRANSMISSION SPECS | |
| Lubrication | — |
| Gear Box | 4 speed, grip-shift, constant mesh |
| Clutch | Wet, multiplate |
| Final Drive | Direct drive |
| CHASSIS SPECS | |
| Frame | Pressed sheet steel, streamlined monocoque |
| Front Suspension | — |
| Rear Suspension | — |
| Front Brakes | 150 mm drum |
| Rear Brakes | 150 mm drum |
| DIMENSION SPECS | |
| Overall Length | 1680 mm / 66.1 in |
| Overall Width | 700 mm / 27.6 in |
| Overall Height | 1070 mm / 42.1 in |
| Seat Height | — |
| Wheelbase | 1180 mm / 46.5 in |
| Ground Clearance | 252 mm / 9.9 in |
| Dry Weight | 85 kg / 187 lbs |
| Wet Weight | — |
| WHEEL SPECS | |
| Front Tyre | 3.0 x 10 in |
| Rear Tyre | 3.0 x 10 in |
| FUEL SYSTEM | |
| Fuel Capacity | 6.0 Litres / 1.6 US gal |
| Fuel Consumption | 2.1 L/100 km / 48 km/l / 111 US mpg |
| Top Speed | 97 km/h / 62 mph |
The ETS was the sporting end of the small-frame line, essentially the ET3 engine fitted to a PK body, with a higher compression ratio and larger carburettor for a little more power. A big expansion-box exhaust replaced the side spare wheel, and it had revised headset and legshield details. It was sold for roughly a year before the T5 took over.
