| Year | 1991 |
| Bore x Stroke | 54 x 54.5 mm |
| Braking 100 km/h / 67 mph - 0 | 43.1 m / 141.4 ft |
| Braking 60 km/h / 32 mph - 0 | 14.8 m / 48.6 ft |
| Capacity | 124.8 cc / 7.6 cu in |
| Compression Ratio | 11.5:1 |
| Consumption Average | 5.5 L/100 km / 18.2 km/l / 42.8 US mpg / 51.4 Imp mpg |
| Cooling System | Liquid cooled |
| Engine | Single cylinder, two stroke, Rotax 123 with Gilardoni 2 cylinder/head |
| Final Drive | #520 Chain, 12T to 17T pinion gear, 49T spur gear |
| Front Brakes | Single disc, 250 mm |
| Front Suspension | Marzocchi upside down fork |
| Front Tyre | 90/90-21 |
| Fuel Capacity | 9 Litres / 2.4 US gal / 2.0 Imp gal |
| Induction | VHSB34 LD carburetor |
| Max Power | 25.7 kW / 34.5 hp @ 10800 rpm |
| Max Torque | 20.6 Nm / 2.1 kgf-m / 15.2 lb-ft @ 10500 rpm |
| Rear Brakes | Single disc, 220 mm |
| Rear Suspension | Swingarm with single shock absorber, Aprilia Progressive System with fully adjustable Boge Sachs shock absorber |
| Rear Tyre | 120/90-18 |
| Road Test | Motosprint 1990 Group Test |
| Standing ¼ Mile | 15.2 sec / 131.4 km/h / 81.6 mph |
| Starting | Kick |
| Top Speed | 132.2 km/h / 82.1 mph |
| Transmission | 6 Speed |
| Wet Weight | 110 kg / 243 lbs |
