Kawasaki ZX-R 750-J (1991) vs Kawasaki Z 750 (2004-05) vs Kawasaki GPz 500S / EX 500R Ninja (2003-04)
Comparison technical specifications
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| Make: | Kawasaki | Kawasaki | Kawasaki |
| Model: | ZX-R 750-J | Z 750 | GPz 500S / EX 500R Ninja |
| Years: | 1991 | 2004-05 | 2003-04 |
| Engine: | Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder. | Four stroke, transverse four cylinder, DOHC, 4 valve per cylinder. | Four stroke, parallel twin cylinders. DOHC, 4 valves per cylinder. |
| Capacity: | 749 cc / 45.7 cu-in | 748 cc / 45.6 cu-in | 498 cc / 30.4 cu-in |
| Bore x Stroke: | 71 x 47.3 mm | 68.4 x 50.9 mm | 74 x 58 mm |
| Cooling System: | Liquid cooled | Liquid cooled | Liquid cooled, |
| Compression Ratio: | 10.8:1 | 11.3:1 | 10.8:1 |
| Induction: | 4x 38 mm Keihin CVKD (Constant Velocity) carburettors / Ram Air System (single intake) | Electronic Fuel Injection with 34mm throttle bodies | 2x Keihin CVK34 carburetor |
| Ignition: | Digital | Digital | TCI (Transistor Controlled Ignition) |
| Starting: | Electric | Electric | Electric |
| Max Power: | 100 hp / 74 kW @ 10500 rpm | 110 hp / 81 kW @ 110000 rpm | 60 hp / 43.7 kW @ 9800 rpm |
| Max Torque: | 7.45 kgf-m / 53.8 lb-ft @ 9000rpm | 7.6 kgf-m / 75 Nm @ 7800 rpm | 46.1 Nm / 4.7 kg-m @ 8500 rpm |
| Clutch: | Multi plate wet (oil submerged) hydraulic ‘slipper’ clutch | Multiple wet plate manual | Wet, multiple discs, cable operated |
| Transmission: | 6 Speed | 6 Speed | 6 Speed |
| Final Drive: | Chain | Chain | Chain |
| Frame: | Aluminium perimeter | Diamond, high-tensile steel | Iron, Double cradle frame |
| Front Suspension: | 43mm Upside-down forks, adjustable ride height, 13-way rebound | 41mm telescopic forks | 38mm Telescopic forks |
| Front Wheel Travel: | 120 mm / 4.7 in | 120 mm / 4.7 in | 130 mm / 5.1 in |
| Rear Suspension: | Uni Track monoshock. adjustable ride height, preload, 4-way rebound | Bottom link, Uni-Trak, 4-way rebound adjustment, 7-way preload | Swinging arm, single shock adjustable for spring preload |
| Rear Wheel Travel: | 120 mm / 4.7 in | 124 mm / 4.9 in | 100 mm / 3.9 in |
| Front Brakes: | 2x 320mm discs 4 piston calipers | 2x 300mm discs 2 piston calipers | Single 270mm disc 2 piston caliper |
| Rear Brakes: | Single 230mm disc 2 piston caliper | Single 220mm disc 1 piston caliper | Single disc |
| Front Tyre: | 120/70ZR17 /Std Pressure 36psi | 120/70-17 | 110/70- 17 |
| Rear Tyre: | 180/55ZR17 /Std Pressure 41psi | 180/55 –17 | 130/70 - 17 |
| Rake: | 24.5° | 24° | 63° |
| Trail: | 95mm / 3.74 in | 103 mm / 4.1 in | 91 mm / 3.5 in |
| Wheelbase: | 1420 mm / 55.9 in | 1425 mm / 56.1 in | 1435 mm / 56.4 in |
| Dry Weight: | 195 kg / 420.9 lbs | 195 kg / 430 lbs | 176 kg / 388 lbs |
| Fuel Capacity: | 18 Litres / 4.7 US gal | 18 Litres / 4.8 US gal | 15.9 Litres / 4.2 US gal |