Vespa PK125 ETS




Make Model

Vespa  P 125 ETS


1984 - 85


11 711 units


Two strike, Single cylinder,


121.2 cc / 7.4 cub in
Bore x Stroke 55 x 51 mm
Compression 9.5:1
Carburetor Dell'Orto SHBC 20/20L
Cooling Air cooled, centrifugal fan

Fuel Mixture

Ignition Electronic
Starting Kick start
Spark Plug NGK BR7HS
Battery 12V AC
Clutch Wet, multiplate

Max Power

6.2  kW / 8,6 hp @ 6000 rpm


4 Speed, grip-shift, constant mesh
Gear Ratios 1st 14.74 / 2nd 19.80 / 3rd 7.06 / 4th 5.31:1
Final Drive Direct drive
Frame Pressed sheet steel, streamlined monocoque structure

Front Brakes

150 mm drum

Rear Brakes

150 mm drum
Wheels Interchangeable

Front Tyre

3.0 x 10"

Rear Tyre

3.0 x 10"


Length:  1680 mm / 66.1 in

Width:      700 mm / 27.6 in

Height:   1070 mm / 42.1 in


1180 mm / 46.5 in

Ground Clearance

252 mm / 9.9 in

Dry Weight

85 kg / 187 lbs

Fuel Capacity 

6.0 L / 1.6 US gal


1.2 L / 0.3 US gal

Consumption  average

2.1 L/100 km / 48 km/l / 111 US mpg

Top Speed

97 km/h / 62 mph


Red, Blue, Black


The final incarnation of the “high performance Small Frame” theme that had started with the 90SS, and evolved via the 90 Racer and 125 ET3, the ETS was essentially the power unit of the latter installed in a PK frame. Please note that this Vespa was only ever marketed as a P125 ETS, and definitely not as a “PK 125ETS”. The frequency with which the latter incorrect designation appears in books is probably another indication of the general lack of interest in some of these later Vespa models.

The engine (complete with three transfer ports) produced about 2 bhp more as compared to its installation in an ET3 – presumably this was accomplished by the increased compression ratio and slightly bigger carb size. The electronic ignition was not publicised this time around since this feature could already be found on some of the PK range, with the rest soon to follow. As with its predecessors, a large expansion box type silencer was fitted as standard – these being the only Vespas to feature such an item. An unfortunate consequence of one being fitted on this model was that there was no room for the side-mounted spare wheel found on other variants.

Compared to other PKs, there were quite a few body changes. There was an entirely new headset, horncasting and. back light. The legshield-mounted toolbox was now much deeper and had the horn located within it. Grills for the latter were cut into the frame to the right of what was technically no longer actually the horncasting. These changes initially rather set this model apart, but they soon found their way onto the rest of the PK range. Apart from the silencer, the only things that really identify an ETS now are the seat and the rather tacky side stripes.

The ETS was only on sale for a year or so before being dropped in favour of the new T5 – a very different concept. This is another largely forgotten Vespa, yet it is probably the best-performing Small Frame of them all.