| Year | 1999 |
| Bore x Stroke | 100 x 82 mm |
| Capacity | 644 cc / 39.3 cu-in |
| Clutch | Wet, multiple discs, cable operated |
| Compression Ratio | 8.3:1 |
| Consumption Average | 43 mpg |
| Cooling System | Air cooled |
| Dry Weight | 161.0 kg / 354.9 lbs |
| Engine | Four stroke, Single cylinder, 4 valve per cylinder. |
| Final Drive | Chain |
| Front Brakes | Single 276mm discs 2 piston calipers |
| Front Suspension | 41mm Telescopic forks |
| Front Tyre | 100/90-19 |
| Fuel Capacity | 13 Litres / 3.6 US gal |
| Ignition | TCI (Transistor Controlled Ignition) |
| Induction | 40mm Keihin carburetors |
| Max Power | 44 hp / 32.1 kW @ 5750 rpm |
| Max Torque | 54 Nm / 39.8 lb-ft @ 4500 rpm |
| Rear Brakes | Single 220mm disc 1 piston caliper |
| Rear Suspension | Rising rate monoshock |
| Rear Tyre | 120/90-17 |
| Seat Height | 845 mm / 33.3 in |
| Standing ¼ Mile | 15.9 sec / 144.8 km/h |
| Starting | Electric |
| Top Speed | 160 km/h /; 100 mph |
| Transmission | 5 Speed |
| Wet Weight | 180 kg / 396.8 lbs |
| Wheelbase | 1440 mm / |
