| Year | 1986 |
| Bore x Stroke | 52 x 47 mm |
| Capacity | 399 cc / 24.3 cu in |
| Compression Ratio | 11.8:1 |
| Dry-Weight | 153 kg / 337 lbs |
| Engine | Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder |
| Final Drive | Chain |
| Front Brakes | 2 x 290 mm Discs, 2 piston calipers |
| Front Suspension | Telescopic forks |
| Front Tyre | 110/80-17 |
| Fuel Capacity | 18 Litres / 4.8 US gal / 4.0 Imp gal |
| Ignition | Transistorised |
| Induction | 4 x 29 mm carburetors |
| Max Power | 43 kW / 59 hp @ 12000 rpm |
| Max Torque | 37 Nm / 3.8 kgf-m / 27.3 lb-ft @ 10500 rpm |
| Rear Brakes | Single disc, 1 piston caliper |
| Rear Suspension | Dual shocks preload adjustable. |
| Rear Tyre | 130/80-17 |
| Starting | Electric |
| Transmission | 6 Speed |
