The Honda CB 550K Four, manufactured between 1976 and 1978, is a four-stroke, transverse four-cylinder motorcycle with a capacity of 544 cc, a compression ratio of 9.0:1, and four Keihin 22mm carburetors. It has an air-cooled system and a double cradle tubular steel frame. The engine can produce a maximum power of 50 hp at 8500 rpm and a maximum torque of 43.1 Nm at 7400 rpm. It has a five-speed transmission with a chain final drive. The front suspension includes telescopic hydraulic forks with a rear suspension featuring dual shocks with lateral adjustable preload. The front brake system is a single 270mm disc while the rear brake is a drum. The motorcycle has a wheelbase of 1405mm and a seat height of 805mm. It has a dry weight of 191 kg and a fuel capacity of 16 liters. The motorcycle is powered via both electric and kick starting options.
Technical specifications:
Make Model: Honda CB 550K Four
| Year | 1976 – 78 |
|---|---|
| Engine | Four stroke, transverse four cylinder, four stroke, SOHC, 2 valves per cylinder. |
| Capacity | 544 cc / 33.1 cu-in |
| Bore x Stroke | 58.5 x 50.6 mm |
| Cooling System | Air cooled |
| Compression Ratio | 9.0:1 |
| Induction | 4x Keihin, 22 mm carburetors |
| Ignition | Battery, with points |
| Starting | Electric & kick |
| Max Power | 50 hp / 36.5 kW @ 8500 rpm |
| Max Torque | 43.1 Nm / 31.8 lb-ft @ 7400 rpm |
| Transmission | 5 Speed |
| Final Drive | Chain |
| Frame | Double cradle tubular steal |
| Front Suspension | 35mm Telescopic hydraulic forks, |
| Rear Suspension | Dual shocks, lateral adjustable preload |
| Front Brakes | Single 270mm disc |
| Rear Brakes | Drum |
| Front Tyre | 3.25-19 |
| Rear Tyre | 3.75-18 |
| Rake | 64 degrees |
| Trail | 105 mm / 4.1 ub |
| Wheelbase | 1405 mm / 55.3 in |
| Seat Height | 805 mm / 31.7 in |
| Dry Weight | 191 kg / 421 lbs |
| Wet Weight | 206.0 kg / 454.2 lbs |
| Fuel Capacity | 16 Litres / 4.2 US gal |
