| MODEL | KAWASAKI GPZ 900R NINJA 1991 - 1996 |
| Year | 1991 - 1996 |
| Engine Type | Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder |
| Displacement / Capacity | 908 cc / 55.4 cu in |
| Bore X Stroke | 72.5 x 55 mm |
| Compression Ratio | 11.0:1 |
| Cooling System | Liquid cooled |
| Max Power | 80.5 kW / 108 hp @ 9500 rpm |
| Max Torque | 8.7 kgf-m / 62.9 lb-ft @ 8500 rpm |
| Ignition | Battery ignition, full electronic |
| Induction | 4 x 34 mm Keihin CVK34 carburettors |
| Start System | Electric |
| TRANSMISSION SPECS | |
| Lubrication | — |
| Gear Box | 6 speed |
| Clutch | — |
| Final Drive | Chain |
| CHASSIS SPECS | |
| Frame | Iron, double cradle frame |
| Front Suspension | 41 mm telescopic forks, air assisted, four-way anti-dive |
| Rear Suspension | Uni-Trak air assisted, single shock, 4-way adjustable damping |
| Front Brakes | 2 x 300 mm discs, 4-piston calipers |
| Rear Brakes | Single 250 mm disc, 2-piston caliper |
| DIMENSION SPECS | |
| Overall Length | — |
| Overall Width | — |
| Overall Height | — |
| Seat Height | 790 mm / 31.1 in |
| Wheelbase | 1425 mm / 56.1 in |
| Ground Clearance | — |
| Dry Weight | 228 kg / 502 lbs |
| Wet Weight | — |
| WHEEL SPECS | |
| Front Tyre | 120/70-17 |
| Rear Tyre | 150/70-18 |
| FUEL SYSTEM | |
| Fuel Capacity | 22 Litres / 5.8 US gal |
| Fuel Consumption | 40.8 mpg |
| Top Speed | 248.4 km/h / 155 mph |
A 1991 Bike magazine review of the GPz900R in its later, 1990-update form with 17-inch front wheel and 300 mm front discs. The review says it remained fast, stable and comfortable and was cheap compared with newer Kawasaki models. It also notes that the engine was largely unchanged from its 1983 design and that rivals had closed the performance gap.
