| MODEL | KAWASAKI GPX 600R NINJA 1985 - 1986 |
| Year | 1985 - 1986 |
| Engine Type | Four stroke, transverse four cylinders, DOHC, 4 valves per cylinder |
| Displacement / Capacity | 598 cc / 36.1 cu in |
| Bore X Stroke | 60 x 52.4 mm |
| Compression Ratio | 11.71:1 |
| Cooling System | Liquid cooled |
| Max Power | 84 hp / 62 kW @ 11000 rpm |
| Max Torque | 42 ft-lb / 5.8 kgf-m @ 9000 rpm |
| Ignition | Digital |
| Induction | 4x 32mm Keihin CV carburetors |
| Start System | Electric |
| TRANSMISSION SPECS | |
| Lubrication | Wet sump |
| Gear Box | 6 speed |
| Clutch | Wet, multiple discs, cable operated |
| Final Drive | Chain |
| CHASSIS SPECS | |
| Frame | — |
| Front Suspension | 38mm telescopic fork with electronic anti-dive |
| Rear Suspension | Rising rate monoshock with adjustable preload and rebound damping |
| Front Brakes | 2x 270mm discs |
| Rear Brakes | Single 130mm disc |
| DIMENSION SPECS | |
| Overall Length | — |
| Overall Width | — |
| Overall Height | — |
| Seat Height | 760 mm / 30.0 in |
| Wheelbase | 1425 mm / 56.1 in |
| Ground Clearance | — |
| Dry Weight | 180 kg / 397 lbs |
| Wet Weight | 195 kg / 430 lbs |
| WHEEL SPECS | |
| Front Tyre | 110/80 V16 |
| Rear Tyre | 130/90 V16 |
| FUEL SYSTEM | |
| Fuel Capacity | 19.5 Litres / 5.1 US gal |
| Fuel Consumption | 19.2 km/litre (average) |
| Top Speed | 226.8 km/h / 140.9 mph |
The GPX 600R Ninja was Kawasaki's mid-1980s 600 cc sportbike, a transverse four with DOHC, four carburetors and digital ignition. Its brief performance was strong for the period, with a claimed top speed of about 141 mph and a 60 - 0 braking distance of 13.1 m on the page. The model was sold in some markets as the ZX 600R.
