| Year | 1980 |
| Average Consumption | 5.0 L/100 km / 20 km/l / 47 US mpg |
| Bore x Stroke | 75 x 74 mm |
| Capacity | 653 cc / 39.8 cu in |
| Compression Ratio | 8.4:1 |
| Cooling System | Air cooled |
| Dimensions | Length: 2175 mm / 85.6"Width: 780 mm / 30.7"Height: 1090 mm / 42.9" |
| Dry Weight | 191 kg / 420 lbs |
| Engine | Four stroke, parallel twin cylinder, SOHC, 2 valves per cylinder. |
| Final Drive | Chain |
| Front Brakes | Twin hydraulic discs, 267 mm |
| Front Suspension | Telescopic forks |
| Front Tyre | 3.50H-19 4PR |
| Fuel Capacity | 15 Litres / 4.0 US gal |
| Ground Clearance | 150 mm / 5.5" |
| Ignition | Battery, induction coil |
| Induction | 2 x Mikuni BS34 carburetors |
| Lubrication | Wet sump |
| Max Power | 39.5 kW / 53 hp @ 7200 rpm |
| Max Torque | 54 Nm / 5.5 kgf-m / 39.8 lb-ft @ 6800 rpm |
| Oil Capacity | 2.5 Litres / 2.6 US qts |
| Rear Brakes | Drum |
| Rear Suspension | Dual shock absorbers |
| Rear Tyre | 4.00H-18 4PR |
| Seat Height | 810 mm / 31.9" |
| Starting | Electric and kick |
| Top Speed | 185 km/h / 115 mph |
| Transmission | 5 Speed |
| Wet Weight | 217 kg / 478 lbs |
| Wheelbase | 1435 mm / 56.5" |
