| MODEL | KAWASAKI Z 650 1980 - 1981 |
| Year | 1980 - 1981 |
| Engine Type | Four stroke, transverse four cylinder, DOHC, 2 valves per cylinder |
| Displacement / Capacity | 652 cc / 39.7 cu in |
| Bore X Stroke | 62 x 54 mm |
| Compression Ratio | 9.5:1 |
| Cooling System | Air cooled |
| Max Power | 66 hp / 48.2 kW @ 8500 rpm |
| Max Torque | 5.8 kgf-m / 57 Nm @ 7000 rpm |
| Ignition | CDI |
| Induction | 4 x 28 mm Mikuni carburettors |
| Start System | Electric & kick |
| TRANSMISSION SPECS | |
| Lubrication | Dry sump |
| Gear Box | 5 Speed |
| Clutch | Wet, multi-plate |
| Final Drive | Chain |
| CHASSIS SPECS | |
| Frame | Steel twin loop cradle |
| Front Suspension | Telescopic hydraulic fork |
| Rear Suspension | Swinging fork |
| Front Brakes | Single 275 mm disc |
| Rear Brakes | 180 mm drum |
| DIMENSION SPECS | |
| Overall Length | — |
| Overall Width | — |
| Overall Height | — |
| Seat Height | 800 mm / 31.5 in |
| Wheelbase | 1437 mm / 56.6 in |
| Ground Clearance | 152 mm / 6.0 in |
| Dry Weight | — |
| Wet Weight | 220 kg / 485 lb |
| WHEEL SPECS | |
| Front Tyre | 3.25-19 |
| Rear Tyre | 4.00-18 |
| FUEL SYSTEM | |
| Fuel Capacity | 16.5 Litres / 4.3 US gal |
| Fuel Consumption | 16.8 km/l (average) |
| Top Speed | 186 km/h / 115.5 mph |
The 1980-81 Z650 was the later production run of the 652 cc four, with CDI ignition in place of the earlier battery-and-coil set-up. It kept the same frame, dry-sump engine and five-speed gearbox as the earlier bikes. Owners were warned to watch the oil pump, primary chain and camchain on older examples.
