| Year | 1985 |
| Bore x Stroke | 97 x 80 mm |
| Capacity | 591 cc / 36.0 cu-in |
| Compression Ratio | 9.0:1 |
| Cooking System | Air cooled |
| Dry Weight | 155 kg / 341.7 lbs |
| Engine | Four stroke, single cylinder, SOHC, 4 valve, RFVC radial valve, PD04 |
| Final Drive | Chain |
| Front Brakes | Single 240mm disc 2 piston calliper |
| Front Suspension | 39mm Showa air-adjustable leading-axle forks with dual Syntallic bushings |
| Front Tyre | 3.00-21 |
| Front Wheel Travel | 220 mm / 9.0 in |
| Fuel Capacity | 28 Litres / 7.4 US gal |
| Ground Clearance | 274 mm / 10.8 in |
| Ignition | Solid state CD |
| Induction | 2 x 28mm piston valve |
| Max Power | 33 kW / 45 hp @ 6500 rpm |
| Max Torque | 48.8 Nm / 36 lb-ft @ 5000 rpm |
| Rear Brakes | 140mm Drum |
| Rear Suspension | Pro-link with adjustable rebound damping |
| Rear Tyre | 5.10-17 |
| Rear Wheel Travel | 203 mm / 8.0 in |
| Seat Height | 860mm / 33.8 in |
| Starting | Electric & Primary kick with automatic compression release |
| Transmission | 5 Speed |
| Wet Weight | 189.0 kg / 416.7 lbs |
| Wheelbase | 1420mm / 55.9 in |
