| Year | 1981 |
| Bore x Stroke | 63 х 52.4 mm |
| Capacity | 653 cc / 39.8 cu-in |
| Clutch | Wet Multiplate; 7 Steel 8 Friction |
| Compression Ratio | 9.2:1 |
| Consumption Average | 48.6 mpg |
| Cooling System | Air-cooled |
| Dry Weight | 206 kg / 465 lbs |
| Engine | Four stroke, transverse four cylinder, DOHC, 2 valves per cylinder, |
| Final Drive | Shaft |
| Frame | Tubular steel dual cradle frame |
| Front Brakes | 2x 268mm disc 1 piston calipers |
| Front Suspension | 36mm Kayaba forks |
| Front Tyre | 3.25-19 |
| Front Wheel Travel | 142 mm / 5.5 in |
| Fuel Capacity | 19.5 Litres / 5.1 US gal |
| Gear Ratio | 1st 2.187 (35/16) 2nd 1.500 (30/20) 3rd 1.153 (30/26) 4th 0.933 (28/30) 5th 0.812 (26/32) |
| Ground Clearance | 145 mm / 5.7 in |
| Ignition | Transistorized |
| Induction | 4x 32mm Hitachi carburetors |
| Max Power | 71 hp / 51.8 kW @ 9400 rpm |
| Max TorqueMotorcycle engine parts | 57 Nm / 42 lb-ft @ 7500 rpm |
| Rear Brakes | Drum |
| Rear Suspension | Duel Kayaba shocks |
| Rear Tyre | 120/90-18 |
| Rear Wheel Travel | 93 mm / 3.6 in |
| Seat Height | 780 mm / 30.7 in |
| Standing ¼ Mile | 12.6 sec. / 171 km/h |
| Starting | Electric |
| Transmission | 5 Speed |
| Wheelbase | 1445 mm / 56.8 in |
