| Year | 1991 |
| Bore x Stroke | 55 х 47 mm |
| Capacity | 399 cc / 24.2 cu-in |
| Compression Ratio | 10.7:1 |
| Cooling System | Air cooled |
| Dry Weight | 178 kg / 392 lbs |
| Engine | Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder. |
| Final Drive | Chain |
| Front Brakes | Single discs 2 piston caliper |
| Front Suspension | Telescopic forks |
| Front Tyre | 110/70-17 |
| Fuel Capacity | 18 Litres / 4.7 US gal |
| Ignition | CDI |
| Induction | 4x 30mm CV |
| Max Power | 42 ps / 30.8 kW @ 10000 rpm |
| Max Torque | 3.5 kgf-m / 25.3 lb-ft @ 7000 rpm |
| Rear Brakes | Single discs 2 piston caliper |
| Rear Suspension | Dual shocks preload adjustable. |
| Rear Tyre | 130/70-18 |
| Starting | Electric |
| Transmission | 6 Speed |
