| Year | 1991 |
| Bore x Stroke | 56 x 40.5 mm |
| Capacity | 399 cc / 24.3 cu-in |
| Clutch | Wet multiple plates |
| Compression Ratio | 12.2:1 |
| Cooling System | Liquid cooled |
| Dry Weight | 160 kg / 352 lbs |
| Engine | Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder. |
| Final Drive | Chain |
| Frame | Aluminium delta box |
| Front Brakes | 2x 298mm discs 2 piston calipers |
| Front Suspension | 41mm Telescopic forks |
| Front Tyre | 120/60 VR17 |
| Fuel Capacity | 15 Litres / 3.9 gal |
| Gear Ratio | 1st 3.307 2nd 1.222 3rd 1.714 4th 1.434 5th 1.272 6th 1.173 |
| Ignition | Analogue CDI (Capacitive Discharge Ign.) |
| Induction | Carburetor |
| Max Power | 66 hp / 48.6 kW @ 12500 rpm |
| Max Torque | 4.0 kgf-m @ 9500 rpm |
| Rear Brakes | Single 210mm disc 2 piston caliper- |
| Rear Suspension | Monoshock single shock preload adjustable. |
| Rear Tyre | 160/60 VR17 |
| Seat Height | 760 mm / 30.7 in |
| Spark Plug | NGK, CR8E |
| Transmission | 6 Speed |
