Honda CB 450K0 (1967) vs Honda CB 650 (1978-79)
Comparison technical specifications
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| Make: | Honda | Honda |
| Model: | CB 450K0 | CB 650 |
| Years: | 1967 | 1978-79 |
| Engine: | Four stroke, parallel twin cylinder, DOHC, 2 valves per cylinder | Four stroke, transverse four cylinder, SOHC, 2 valves per cylinder. |
| Capacity: | 445 cc / 27.1 cu-in | 626.8 cc / 38.2 cu-in |
| Bore x Stroke: | 70 x 57.8 mm | 59.8 x 55.8 mm |
| Cooling System: | Air cooled | Air cooled. |
| Compression Ratio: | 9.0:1 | 9.0:1 |
| Induction: | 2x 32mm Keihin carburetors | 4x 26mm Keihin carburetors |
| Ignition: | Coil with auto-advance, twin contact breaker | Transistorized |
| Starting: | Kick | Electric |
| Max Power: | 45 hp / 32.8 kW @ 9000 rpm | 63 hp / 46.9 kW @ 9000 rpm |
| Max Torque: | 37.4 Nm / 27.6 lb-ft @ 7000 rpm | 51.5 Nm / 38 ft-lb @ 8000 rpm |
| Transmission: | 5 Speed | 5 Speed |
| Final Drive: | Chain | Chain |
| Front Suspension: | Telescopic forks with two-way damping. | Centre axle coil spring forks |
| Rear Suspension: | Swing arm, shock absorbers with adjustable preload | Dual Showa dampers. adjustable spring preload. |
| Front Brakes: | Drum | Single 275mm discs 1 piston calipers |
| Rear Brakes: | Drum | 180mm Drum |
| Front Tyre: | 3.25-18 | 3.50-19 |
| Rear Tyre: | 3.50-18 | 4.50-17 |
| Wet Weight: | 204.0 kg / 449.7 lbs | 212 kg / 467.3 lbs |
| Fuel Capacity: | 14 Litres / 3.7 US gal | 18 Litres / 4.7 US gal |