| Year | 1981 |
| Bore x Stroke | 56 x 40.0 mm |
| CapacityMotorcycle rental | 399 cc / 24.3 cu-in |
| Clutch | Wet, multi-plate, hydraulic operated |
| Compression Ratio | 9.8:1 |
| Cooling System | Air cooled |
| Dry Weight | 188 kg / 414 lbs |
| Engine | Four stroke, transverse four cylinder, DOHC, 4 valve per cylinder |
| Final Drive | Shaft |
| Frame | Double cradle (steel) |
| Front Brakes | Single 229mm disc, 2 piston caliper |
| Front Suspension | Air-assisted telescopic fork |
| Front Tyre | 100/90-19 57S |
| Front Wheel Travel | 138 mm / 4.4 in |
| Fuel Capacity | 12.0 Litres / 3.17 US gal |
| Ground Clearance | 150 mm / 5.9 in |
| Ignition | CDI |
| Induction | 4x 26mm Keihin carburetor |
| Max Power | 48 hp / 35.3 kW @ 10500 rpm |
| Max Torque | 34.0 Nm / 25.0 lb-ft / 8500 rpm |
| Rear Brakes | Drum |
| Rear Suspension | Swingarm with twin-shock |
| Rear Tyre | 130/90-16 67S |
| Rear Wheel Travel | 103 mm / 4.0 in |
| Seat Height | 780 mm / 30.7 in |
| Starting | Electric |
| Trail | 107 mm / 4.2 in |
| Transmission | 6 Speed |
| Wet Weight | 200 kg / 441 lbs |
| Wheelbase | 1440 mm / 56.7 in |
