| Year | 1981 |
| Alternator | Bosch 12 V/280 W |
| Bore x Stroke | 84.8 x 70.6 mm |
| Capacity | 797.5 cc / 48.7 cu in. |
| Clutch | Dry single plate, with diaphragm spring |
| Compression Ratio | 9.2:1 |
| Cooling System | Air cooled |
| Dry Weight | 231 Kg / 509 lbs |
| Engine | Four stroke, two cylinder horizontally opposed Boxer, pushrod operated 2 valves per cylinder. |
| Final Drive | Shaft |
| Frame | Double loop tubular frame with bolt on rear section |
| Front Brakes | Single ∅285mm disc, 1 piston caliper |
| Front Suspension | Telescopic hydraulic fork |
| Front Tyre | 100/90-H19 |
| Fuel Capacity | 19 Litres / 5.0 US gal |
| Gear Ratio | 1st 4.40 / 2nd 2.86 / 3rd 2.07 / 4th 1.67 / 5th 1.50:1 |
| Ignition | Battery ignition |
| Induction | 2 x Bing constant depression carburetors |
| Max Power | 36.4 kW / 50 hp @ 6500 rpm |
| Max Torque | 58 Nm / 5.9 kgf-m / 42 ft/lb @ 4000 rpm |
| Rear Brakes | ∅200mm Drum |
| Rear Suspension | BMW Monolever swinging arm |
| Rear Tyre | 120/90-H18 |
| Rear Wheel Ratio | 1:3.20 or 1:3.36 |
| Spark Plug | Bosch W 7 D / Beru14-7DU / Champion N9YC |
| Starting | Electric |
| Transmission | 5 Speed |
