| MODEL | KAWASAKI Z 1100GP 1981 |
| Year | 1981 |
| Engine Type | Four-stroke, transverse four-cylinder, DOHC, 2 valves per cylinder |
| Displacement / Capacity | 1089 cc / 66.4 cu in |
| Bore X Stroke | 72.5 x 66 mm |
| Compression Ratio | 8.9:1 |
| Cooling System | Air cooled |
| Max Power | 108 hp / 81 kW @ 8000 rpm |
| Max Torque | 95.1 Nm / 70.2 lb-ft @ 7000 rpm |
| Ignition | Electronic CDI |
| Induction | Bosch electronic fuel injection |
| Start System | Electric |
| TRANSMISSION SPECS | |
| Lubrication | — |
| Gear Box | 5 speed |
| Clutch | — |
| Final Drive | Chain |
| CHASSIS SPECS | |
| Frame | Steel cradle |
| Front Suspension | Telescopic coil/air spring forks |
| Rear Suspension | Swinging arm with 2 dampers, adjustable preload and damping |
| Front Brakes | 2 x 270 mm discs, 1-piston calipers |
| Rear Brakes | Single 270 mm disc, 1-piston caliper |
| DIMENSION SPECS | |
| Overall Length | — |
| Overall Width | — |
| Overall Height | — |
| Seat Height | 780 mm / 30.8 in |
| Wheelbase | 1540 mm / 60.6 in |
| Ground Clearance | — |
| Dry Weight | 237.3 kg / 521 lb |
| Wet Weight | 255 kg / 562 lb |
| WHEEL SPECS | |
| Front Tyre | 3.25-18 |
| Rear Tyre | 4.25-18 |
| FUEL SYSTEM | |
| Fuel Capacity | 21.4 Litres / 5.5 US gal |
| Fuel Consumption | 38.8 mpg (average) |
| Top Speed | 137 mph |
The 1981 Z1100GP, which the page presents as the GPz1100, was Kawasaki's large air-cooled superbike and the start of its high-performance four-cylinder line of the early 1980s. It used a fuel-injected, two-valve-per-cylinder engine on a twin-shock chassis. It was heavy and tall but known for strong acceleration and mid-range pull, and it later gained a fairing and single-shock rear before the water-cooled GPz900R replaced it.
