Kawasaki ZX-R 750-J (1991) vs Kawasaki Z 750 (2004-05) vs Kawasaki GPz 500S / EX 500R Ninja (2003-04) vs Aprilia SMV 750 Dorsoduro Factory (2010)
Comparison technical specifications
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| Make: | Kawasaki | Kawasaki | Kawasaki | Aprilia |
| Model: | ZX-R 750-J | Z 750 | GPz 500S / EX 500R Ninja | SMV 750 Dorsoduro Factory |
| Years: | 1991 | 2004-05 | 2003-04 | 2010 |
| 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. | Four stroke, longitudinal 90°V twin, DOHC, 4 valves per cylinder |
| Capacity: | 749 cc / 45.7 cu-in | 748 cc / 45.6 cu-in | 498 cc / 30.4 cu-in | 749.9 cc / 45.7 cu-in |
| Bore x Stroke: | 71 x 47.3 mm | 68.4 x 50.9 mm | 74 x 58 mm | 92 x 56.4 mm |
| Cooling System: | Liquid cooled | Liquid cooled | Liquid cooled, | Liquid cooled |
| Compression Ratio: | 10.8:1 | 11.3:1 | 10.8:1 | 11.0:1 |
| 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 | Integrated engine management system. Latest generation 3 maps (Sport, Touring, Rain) Ride-by-Wire throttle management. |
| Ignition: | Digital | Digital | TCI (Transistor Controlled Ignition) | Digital electronic, integrated with the injection, two spark plugs per cylinder |
| Starting: | Electric | Electric | Electric | Electric |
| Max Power: | 100 hp / 74 kW @ 10500 rpm | 110 hp / 81 kW @ 110000 rpm | 60 hp / 43.7 kW @ 9800 rpm | 67.3 kW / 92 hp @ 8750 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 | 82 Nm / 8.36 kgf-m / 60.4 lb/ft / @ 4500 rpm |
| Clutch: | Multi plate wet (oil submerged) hydraulic ‘slipper’ clutch | Multiple wet plate manual | Wet, multiple discs, cable operated | Multi-plate wet clutch, hydraulically operated |
| Transmission: | 6 Speed | 6 Speed | 6 Speed | 6 Speed |
| Final Drive: | Chain | Chain | Chain | Chain |
| Frame: | Aluminium perimeter | Diamond, high-tensile steel | Iron, Double cradle frame | Modular tubular steel frame fastened to aluminium side plates with by high strength bolts. Removable rear subframe. |
| Front Suspension: | 43mm Upside-down forks, adjustable ride height, 13-way rebound | 41mm telescopic forks | 38mm Telescopic forks | Ø43 mm Upside-down fork, Sachs |
| Front Wheel Travel: | 120 mm / 4.7 in | 120 mm / 4.7 in | 130 mm / 5.1 in | 160 mm / 6.3 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 | Aluminium alloy swingarm, gas-operated shock absorber with piggy back, with adjustable spring preload and compression and rebound damping. |
| Rear Wheel Travel: | 120 mm / 4.7 in | 124 mm / 4.9 in | 100 mm / 3.9 in | 160 mm / 6.3 in |
| Front Brakes: | 2x 320mm discs 4 piston calipers | 2x 300mm discs 2 piston calipers | Single 270mm disc 2 piston caliper | 2 x Ø320 mm stainless steel floating discs, radial 4 piston caliper, Brembo |
| Rear Brakes: | Single 230mm disc 2 piston caliper | Single 220mm disc 1 piston caliper | Single disc | Single Ø240 mm disc, 1 piston caliper, metal braided brake pipe, Brembe |
| Front Tyre: | 120/70ZR17 /Std Pressure 36psi | 120/70-17 | 110/70- 17 | 120/70 ZR17 |
| Rear Tyre: | 180/55ZR17 /Std Pressure 41psi | 180/55 –17 | 130/70 - 17 | 180/55 ZR17 |
| Dry Weight: | 195 kg / 420.9 lbs | 195 kg / 430 lbs | 176 kg / 388 lbs | 186 kg / 409 lbs |
| Fuel Capacity: | 18 Litres / 4.7 US gal | 18 Litres / 4.8 US gal | 15.9 Litres / 4.2 US gal | 12 Litres / 3.17 US gal |