HONDACB750 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.