Kawasaki GPz 600R Ninja / ZX 600R Ninja (1991-92) vs Yamaha XV 920R (1981-82) vs Kawasaki KR1S (1990)
Comparison technical specifications
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| Make: | Kawasaki | Yamaha | Kawasaki |
| Model: | GPz 600R Ninja / ZX 600R Ninja | XV 920R | KR1S |
| Years: | 1991-92 | 1981-82 | 1990 |
| Engine: | Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder | Four stroke, 75° V-twin cylinder, SOHC. 2 valve per cylinder | Ttwo stroke, parallel twin cylinder, Electronic variable exhaust valve ( KIPS ) equipment |
| Capacity: | 592 cc / 36.1 cu-in | 920 cc / 56.1 cu-in | 249 cc / 15.2 cu-in |
| Bore x Stroke: | 60 х 52.4 mm | 92 х 69.2 mm | 56.0 x 50.6 mm |
| Cooling System: | Liquid cooled | Air cooled, | Liquid cooled |
| Compression Ratio: | 11.0:1 | 8.3:1 | 7.4:1 |
| Induction: | 4x 32mm Keihin CVK carburetors | 2x 40mm Hitachi carburetor | 2x 28mm Keihin PWK carburetor |
| Ignition: | Digital | Transistorized | Capacitor discharge |
| Starting: | Electric | Electric | Kick |
| Max Power: | 75 hp / 54.7 kW @ 10500 rpm | 65 hp / 48.4 Kw @ 6500 rpm | 59.1 hp / 43.2 kW) @ 10500 rpm |
| Max Torque: | 5.1 kgf-m / 36.8 lb-ft @ 9000 rpm | 7.8 kgf-m / 56.4 lb-ft @ 5000 rpm | 40.2 Nm / 4.1 kgf-m @ 10500 rpm |
| Transmission: | 6 Speed | 5 Speed | 6 Speed |
| Final Drive: | Chain | Shaft | Chain |
| Front Suspension: | 37mm Air assisted forks, AVDS adjustable anti-dive | 37mm Showa leading axle. adjustment for air pressure and rebound damping | 41mm stanchions, air assisted telescopic fork with unstepped preload adjustment |
| Rear Suspension: | Single air assisted shock adjustable for rebound damping | Monoshock single damper, adjustment for air pressure and rebound damping | Bottom Link Uni-Trak with air adjustable gas shock, unstepped preload, and four-way rebound damping |
| Front Brakes: | 2x discs 1 piston calipers | 2x 267mm disc 2 piston calipers | 2x discs 4 piston calipers |
| Rear Brakes: | Single disc 1 piston caliper | Drum | Single disc 2 piston caliper |
| Front Tyre: | 110/90-16 | 3.50-19 | 100/70 VR17 |
| Rear Tyre: | 130/90-16 | 120/90-18 | 130/60 VR18 |
| Fuel Capacity: | 18 Litres / 4.7 US gal | 14.5 Litres / 3.8 US gal | 16.0 Litres / 4.2 gal |
| Consumption Average: | 47.8 mpg | 44.3 mpg | 36 mpg |
| Standing ¼ Mile: | 12.7 sec / 107.3 mph | 13.0 sec / 100 mph 160 km/h | 12.9 sec / 108 mph 173.8 km/h |