
| MODEL | Aprilia ETX 125 |
| ENGINE TYPE | Two stroke single cylinder |
| Year | 1984-1985 |
| Displacement / Capacity | 123.6 cc / 7.54 cu in |
| Bore X Stroke | 54 x 54 mm |
| Compression Ratio | 15.5:1 |
| Cooling System | Liquid cooled |
| Max Power | 13.6 kW / 18.3 hp @ 8250 rpm |
| Max Torque | — |
| Ignition | — |
| Induction | — |
| Start System | — |
| TRANSMISSION SPECS | |
| Lubrication | — |
| Gear Box | 6 Speed |
| Clutch | — |
| Final drive | Chain |
| Secondary transmission: | — |
| ------------- | |
| CHASSIS SPECS | |
| Frame | Single steel beam cradle |
| Front Suspension | Hydraulic telescopic front fork, Marzocchi Ø35 mm |
| Rear Suspension | Swingarm with single shock absorber |
| Front Brakes | Single disc, Ø230 mm |
| Rear Brakes | Drum, Ø125 mm |
| ------------ | |
| DIMENSION SPECS | |
| Overall Length | — |
| Seat Height | — |
| Overall height | — |
| Width | — |
| Dry Weight | 113 kg / 249 lbs |
| WHEEL SPECS | |
| Front Tyre | 2.75-21 |
| Rear Tyre | 4.00-18 |
| Front Wheel / Rim | — |
| Rear Wheel / Rim | — |
| -------------- | |
| FUEL SYSTEM | |
| Fuel System | — |
| Fuel Capacity | 10 Litres / 2.6 US gal |
| Fuel | — |
| _________ | — |
| Standing 0 - 1000m | — |
| Top Speed | 121.5 km/h / 75.5 mph |
The first ETX 125, marketed in 1984, is characterized by a Rotax 126 engine with no exhaust valve RAVE Aprilia and is the first mass-produced to fit the engine produced by the Austrian company. At a pre-series marketed at the end of 1984 it was immediately followed by the final version sold in January 1985. The final version differs from the pre-set with the following changes: Frame painted in Red ( pre series was Silver) All scoops painted grey ( pre series was White) Sella blue or red with white screen-printed Aprilia Logo printed sideways.(in pre-production on the flanks saddle is printed Aprilia ETX. The ETX has a nice line with superstructures well designed and implemented. Valid and complete instrumentation with water thermometer placed on the radiator itself and the beautiful blocks electrical CEV. The chassis, the same as for the pre-series , uses a single beam steel frame to cradle split square tube of a conventional fork Marzocchi 35mm coupled to a rear suspension that uses the proven APS system. The braking system uses a 230 mm front disc and rear drum by a 125mm. The Rotax 126 engine is equipped with reed valve induction, forced circulation cooling and automatic mixer. There are no exhaust valve, balance shaft or electric starter. The maximum power at the wheel of 18.28hp at 8250 rpm and the maximum speed of 121.5 km / h. Price in 1984: Lire 3,250,000 125stradali.com