| Year | 1985 |
| Bore x Stroke | 82.5 x 63 mm |
| Capacity | 673 cc / 41.07 cu-in |
| Clutch | Wet, multi-plate, 5-speed |
| Compression Ratio | 9.8:1 |
| Consumption Average | 45.5 mpg |
| Cooling System | Liquid cooled |
| Dry Weight | 227 kg / 500.4 lbs |
| Engine | Four stroke, longitudinal 800 V-twin cylinder, camshaft nestles at the base of the V between the cylinders. ,OHV, 4 valves per cylinder operated by pushrods |
| Final Drive | Shaft |
| Front Brakes | 2x 280mm discs |
| Front Suspension | Air assisted telescopic forks |
| Front Tyre | 100/90-18 |
| Fuel Capacity | 19 Litres / 5.0 US gal |
| Ignition | CDI |
| Induction | 2x 39mm Keihin |
| Max Power | 64 hp / 47.7 kW @ 8000 rpm |
| Max Torque | 61 Nm / 45 lb-ft @ 6500 rpm |
| Rear Brakes | Single 280mm disc |
| Rear Suspension | Pro-link, air adjustable preload |
| Rear Tyre | 120/90-18 |
| Standing ¼ Mile | 13.5 sec / 99 mph |
| Starting | Electreic |
| Top Speed | 116 mph |
| Transmission | 5 Speed |
| Wet Weight | 235.0 kg / 518.1 lbs |
