Kawasaki KE 125 (1975-76) vs Kawasaki ZX-10 (1989) vs Kawasaki ZZ-R 1200 / ZX-12C (2003) vs Honda CB 450K2 (1969)
Comparison technical specifications
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| Make: | Kawasaki | Kawasaki | Kawasaki | Honda |
| Model: | KE 125 | ZX-10 | ZZ-R 1200 / ZX-12C | CB 450K2 |
| Years: | 1975-76 | 1989 | 2003 | 1969 |
| Engine: | Two stroke, single cylinder, rotary valves | Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder. | Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder. | Four stroke, parallel twin cylinder, DOHC, 2 valves per cylinder |
| Capacity: | 124 cc / 7.6 cu-in | 997 cc / 60.8 cu-in | 1164 cc / 71.0 cu-in | 445 cc / 27.1 cu-in |
| Bore x Stroke: | 56 х 50.6 mm | 74 x 58 mm | 78 x 59 mm | 70 x 57.8 mm |
| Cooling System: | Air cooled | Liquid cooled | Liquid cooled | Air cooled |
| Compression Ratio: | 7.0:1 | 11.0:1 | 10.6:1 | 9.0:1 |
| Induction: | Carburetor | 4x 36mm Keihin CV carburtors | 4x Keihin CVKD40, TPS | 2x 32mm Keihin carburetors |
| Ignition: | Membrane | Electronic | Digital ignition | Coil with auto-advance, twin contact breaker |
| Starting: | Kick | Electric | Electric | Kick |
| Max Power: | 13 hp / 9.6 kW @ 7500 rpm | 137 hp / 99.9 kW @ 10000 rpm | 158.8 hp / 116.8 kW @ 9800 rpm | 45 hp / 32.8 kW @ 9000 rpm |
| Max Torque: | 1.5 kgf-m / 10.8 lb-ft @ 6000 rpm | 3.6 kgf-m / 103 Nm @ 9000 rpm | 164 Nm / 121 lb-ft @ 8200 rpm | 37.4 Nm / 27.6 lb-ft @ 7000 rpm |
| Transmission: | 6 Speed | 6 Speed | 6 Speed | 5 Speed |
| Final Drive: | Chain | Chain | Chain | Chain |
| Front Suspension: | Telescopic forks | 41mm Telescopic forks | Cartridge-style fork with preload adjustment | Telescopic forks with two-way damping. |
| Rear Suspension: | Dual shocks | Uni-trek monoshock,. air assisted 4-way rebound damping adjustment | UNI-TRAK® system with remote reservoir shock with preload adjustment | Swing arm, shock absorbers with adjustable preload |
| Front Brakes: | Drum | 2x 300mm discs 2 piston calipers | 2x 320mm discs 6 piston calipers | Drum |
| Rear Brakes: | Drum | Single 250mm disc 2 piston caliper | Single 250mm disc 2 piston caliper | Drum |
| Front Tyre: | 2.75-21 | 120/70-17 | 120/70 ZR17 | 3.25-18 |
| Rear Tyre: | 3.50-18 | 160/60-18 | 180/55-ZR17 | 3.50-18 |
| Dry Weight /: | 97 kg / 213.8 lbs | 222 kg / 490 lbs | 236 kg / 520 lbs. | 187 kg / 412 lbs |
| Fuel Capacity: | 9.5 Litres / 2.5 US gal | 22 Litres / 5.8 US gal | 23 Litres / 6.0 US gal | 14 Litres / 3.7 US gal |