| MODEL | HONDA CB 750C CUSTOM 1980 |
| Year | 1980 |
| Engine Type | Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder |
| Displacement / Capacity | 748 cc / 45.6 cu in |
| Bore X Stroke | 62 x 62 mm / 2.4 x 2.4 in |
| Compression Ratio | 9.1:1 |
| Cooling System | Air cooled |
| Max Power | 56.2 kW / 77 hp @ 9000 rpm |
| Max Torque | 67 Nm / 49.4 lb-ft @ 7000 rpm |
| Ignition | CDI |
| Induction | 4 x 30 mm Keihin carburettors |
| Start System | Electric |
| TRANSMISSION SPECS | |
| Lubrication | — |
| Gear Box | 5 Speed |
| Clutch | — |
| Final Drive | Chain |
| CHASSIS SPECS | |
| Frame | — |
| Front Suspension | Adjustable leading-axle air-assisted telescopic fork |
| Rear Suspension | Swinging arm, adjustable shock absorbers |
| Front Brakes | 2 x 276 mm discs, single-piston calipers |
| Rear Brakes | 190 mm drum |
| DIMENSION SPECS | |
| Overall Length | — |
| Overall Width | — |
| Overall Height | — |
| Seat Height | — |
| Wheelbase | — |
| Ground Clearance | — |
| Dry Weight | 236 kg / 520 lbs |
| Wet Weight | 253 kg / 558 lbs |
| WHEEL SPECS | |
| Front Tyre | 110/90-19 |
| Rear Tyre | 130/90-16 |
| FUEL SYSTEM | |
| Fuel Capacity | 16.2 Litres / 4.2 US gal |
| Fuel Consumption | 42.9 US mpg |
| Top Speed | 204.7 km/h / 127 mph |
The CB750C Custom put the twin-cam 748 cc four into a cruiser-styled package with a stepped seat, pull-back bars, a smaller tank and a 16-inch rear wheel. It also gained a leading-axle air-assisted fork. Testers found it a usable everyday bike, though the low seat and stiff rear end limited long-distance comfort.
