| Year | 1980 |
| Bore x Stroke | 59.8 x 55.8 mm |
| Capacity | 626.8 cc / 38.2 cu-in |
| Compression Ratio | 9.0:1 |
| Cooling System | Air cooled |
| Dry Weight | 220 kg / 485 lbs |
| Engine | Four stroke, transverse four cylinder, SOHC, 2 valves per cylinder |
| Final Drive | Chain |
| Front Brakes | Single 275mm disc, 1 piston caliper |
| Front Suspension | Centre axle coil spring forks |
| Front Tyre | 3.50-19 |
| Front Wheel Travel | 135 mm / 5.3 in |
| Fuel Capacity | 13.5 Litres / 3.5 US gal |
| Ignition | Transistorized |
| Induction | 4x 26mm Keihin carburetors |
| Max Power | 63 hp / 46.9 kW @ 9000 rpm |
| Max Torque | 51.5 Nm / 38 lb-ft @ 8000 rpm |
| Rear Brakes | 180mm Drum |
| Rear Suspension | Dual Showa dampers. adjustable spring preload. |
| Rear Tyre | 130/90-16 |
| Rear Wheel Travel | 91 mm / 3.5 in |
| Seat Height | 760 mm / 30.1 in |
| Starting | Electric |
| Trail | 121 mm / 4.6 in |
| Transmission | 5 Speed |
| Wheelbase | 1480 mm / 58.3 in |
