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HONDA CB750 Four K (1980-1981) Specs, Performance & Photos

Segment: Custom/Cruiser
Production years: 1980, 1981

HONDA CB750 Four K 1980-1981
HONDA CB750 Four K (1980-1981)

In 1981, the Japanese motorcycle manufacturer launched the Honda CB750 Four K, a naked or standard machine part of the CB series in Honda's range that came in two different colors, such as Candy Muse Red and Black Metallic.

The bike featured an instrument panel with a 135 kph (85 mph) speed limit, a four-into-four exhaust system with a new megaphone design for the mufflers, air-adjustable front forks, and a DOHC four-cylinder engine coupled to a five-speed manual transmission.

Also, the CB750 Four K came equipped from the factory with standard features, such as cast aluminum wheels, a chromed dual exhaust system with two mufflers on each side, a one-piece dual seat with a passenger grab handle, a round headlight, a wide handlebar, and a black-finished steel frame.

For suspension, the bike packed an air-adjustable telescopic fork on the front and dual shock absorbers on the rear, while the stopping power was achieved by a 275 mm disc squeezed by a hydraulic caliper on the front wheel and a 180 mm drum braking unit on the rear wheel.

As for performance, the 1981 Honda CB750 Four K took its thrust from a 748cc four-stroke four-cylinder air-cooled engine fueled by four Keihin carburetors and delivered an output power of 77 hp with maximum strength at 9,000 rpm and 65 Nm (48 lb-ft) of torque available at 7,000 rpm.

HONDA CB750 Four K 1980-1981

HONDA CB750 Four K 748

engine specs
Type:air-cooled, four-stroke, transverse four cylinder, DOHC, 4 valves per cylinder
Displacement:748 cm3
Bore X Stroke:2.4x2.4 in OR 61 mm
Compression Ratio:9.2:1
Horsepower:77/9000 KW(hp)/RPM
Torque:48/7000 lb-ft/RPM OR 65/7000 Nm/RPM
Fuel System:4x30mm Keihin carburetor
transmission specs
Gearbox:6-speed, manual
Clutch:-
Primary Drive:-
Final Drive:chain
chassis specs
Frame:steel
Front Suspension:telescopic fork
Rear Suspension:dual shock absorbers
Front Brake:dual 275mm discs
Rear Brake:180mm drum
dimension specs
Overall Length:-
Overall Width:-
Seat Height:-
Wheelbase:-
Ground Clearance:-
Weight:520 lbs OR 236 kg
Fuel Capacity:5.3 gallons OR 20.1 L
tyres specs
Front:3.25 - 19
Rear:4.00 - 18
power system specs
Power pack:-
Nominal Capacity:-
Maximum Capacity:-
Charger type:-
Charging time (normal):-
Charging time (quick):-
Range:-
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