| MODEL | HONDA CB 500 FOUR K 1977 - 1978 |
| Year | 1977 - 1978 |
| Engine Type | Four stroke, transverse four cylinder, SOHC, 2 valves per cylinder |
| Displacement / Capacity | 498 cc / 30.4 cu in |
| Bore X Stroke | 56.0 x 50.6 mm |
| Compression Ratio | 9.0:1 |
| Cooling System | Air cooled |
| Max Power | 35 kW / 48 hp @ 9000 rpm |
| Max Torque | 45 Nm / 33.1 lb-ft @ 7500 rpm |
| Ignition | Battery and points |
| Induction | 4x 22 mm Keihin carburettors |
| Start System | Electric, with kickstarter |
| TRANSMISSION SPECS | |
| Lubrication | Wet sump |
| Gear Box | 5 speed |
| Clutch | — |
| Final Drive | Chain |
| CHASSIS SPECS | |
| Frame | — |
| Front Suspension | 35 mm telescopic fork |
| Rear Suspension | Swingarm, twin hydraulic shocks with adjustable spring preload |
| Front Brakes | Single 267 mm disc, 1 piston caliper |
| Rear Brakes | Drum |
| DIMENSION SPECS | |
| Overall Length | — |
| Overall Width | — |
| Overall Height | — |
| Seat Height | — |
| Wheelbase | — |
| Ground Clearance | — |
| Dry Weight | 185 kg / 408 lbs |
| Wet Weight | 201 kg / 445.3 lbs |
| WHEEL SPECS | |
| Front Tyre | 3.25-19 |
| Rear Tyre | 3.50-18 |
| FUEL SYSTEM | |
| Fuel Capacity | 14 Litres / 3.7 US gal |
| Fuel Consumption | — |
| Top Speed | — |
These final CB500 Fours (late K3 bikes) were built in small numbers for Europe before the model ended in 1978. They kept the original single-cam four, five-speed gearbox and single front disc, by then overshadowed by newer twin-cam rivals.
