| MODEL | HONDA CB 750 FOUR K7/K8 1977 - 1978 |
| Year | 1977 - 1978 |
| Engine Type | Four stroke, transverse four cylinder, SOHC, 2 valves per cylinder |
| Displacement / Capacity | 736 cc / 44.9 cu in |
| Bore X Stroke | 61 x 63 mm / 2.4 x 2.5 in |
| Compression Ratio | 9.2:1 |
| Cooling System | Air cooled |
| Max Power | 50 kW / 67 hp @ 8000 rpm |
| Max Torque | 60 Nm / 6.1 kgf-m / 44 lb-ft @ 7500 rpm |
| Ignition | Battery, ignition coil |
| Induction | 4 x 28 mm Keihin carburettors |
| Start System | Electric, kick |
| TRANSMISSION SPECS | |
| Lubrication | Dry sump |
| Gear Box | 5 Speed |
| Clutch | Wet multi-plate |
| Final Drive | Chain |
| CHASSIS SPECS | |
| Frame | Tubular steel duplex cradle |
| Front Suspension | Telescopic forks, 141.5 mm / 5.6 in travel |
| Rear Suspension | Swingarm, dual shocks, preload adjustable, 101.6 mm / 4.0 in travel |
| Front Brakes | Single 296 mm disc |
| Rear Brakes | 179 mm drum |
| DIMENSION SPECS | |
| Overall Length | 2280 mm / 89.8 in |
| Overall Width | 880 mm / 34.6 in |
| Overall Height | 1185 mm / 46.7 in |
| Seat Height | 810 mm / 31.9 in |
| Wheelbase | 1495 mm / 58.9 in |
| Ground Clearance | 150 mm / 5.9 in |
| Dry Weight | 231 kg / 508 lbs |
| Wet Weight | — |
| WHEEL SPECS | |
| Front Tyre | 3.50H19 |
| Rear Tyre | 4.50H17A |
| FUEL SYSTEM | |
| Fuel Capacity | 19 Litres / 5.0 US gal |
| Fuel Consumption | 6.9 L/100 km / 14.6 km/l / 34.3 US mpg |
| Top Speed | 198 km/h / 123.2 mph |
The K7 and K8 were the last of the single-cam CB750 roadsters before the twin-cam replacement arrived. They kept the familiar 736 cc four and four-into-four exhaust but gained a restyled tank and seat, a 17-inch rear wheel with a fatter tyre, and a revised dash with the ignition and choke moved. They suited riders who preferred the classic K look over the sportier F models.
