| MODEL | KAWASAKI ZX-R 750R K 1991 |
| Year | 1991 |
| Engine Type | Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder |
| Displacement / Capacity | 749 cc / 45.7 cu in |
| Bore X Stroke | 71 x 47.3 mm |
| Compression Ratio | 10.8:1 |
| Cooling System | Liquid cooled |
| Max Power | 121 hp / 88.3 kW @ 10500 rpm (112.3 hp / 83.7 kW at rear tyre @ 11400 rpm) |
| Max Torque | 7.4 kgf-m / 53.8 lb-ft @ 9750 rpm |
| Ignition | Digital (NGK CR9E spark plug) |
| Induction | 4x 39 mm Keihin CVKD (constant velocity) carburettors, Ram Air System |
| Start System | Electric |
| TRANSMISSION SPECS | |
| Lubrication | Wet sump, 10W/40 engine oil |
| Gear Box | 6 Speed |
| Clutch | Multi plate wet (oil submerged) hydraulic slipper clutch |
| Final Drive | Chain |
| CHASSIS SPECS | |
| Frame | Aluminium perimeter |
| Front Suspension | 41 mm upside-down forks, adjustable ride height, 13-way rebound, 8-way compression |
| Rear Suspension | Uni Track monoshock, adjustable ride height and preload, 4-way rebound |
| Front Brakes | 2x 320 mm discs, 4 piston calipers |
| Rear Brakes | Single 230 mm disc, 2 piston caliper |
| DIMENSION SPECS | |
| Overall Length | — |
| Overall Width | — |
| Overall Height | — |
| Seat Height | — |
| Wheelbase | 1420 mm / 55.9 in |
| Ground Clearance | — |
| Dry Weight | 190 kg / 418.8 lbs |
| Wet Weight | — |
| WHEEL SPECS | |
| Front Tyre | 120/70 ZR17 |
| Rear Tyre | 180/55 ZR17 |
| FUEL SYSTEM | |
| Fuel Capacity | 18 Litres / 4.7 US gal |
| Fuel Consumption | 14.1 km/l (average) |
| Top Speed | 256.5 km/h / 159.3 mph |
The 1991 ZXR750R was the race-oriented version of the J-series ZXR750, with 39 mm flat-slide carburettors and a higher-revving top end. Bike magazine's 1991 test found it much stronger above about 8,000 rpm than the standard J, though lumpy at low and mid-range throttle. Its chassis was only marginally sharper than the J's, and it was priced as a performance machine.
