This is from the site Bring a Trailer (https://bringatrailer.com/) ...
This 1981 Honda CB750F Super Sport is powered by a 748cc DOHC 4-cylinder with a 5-speed transmission, and the selling dealer acquired it earlier this year from the believed second owner. The bike wears an aftermarket seat cover, and the seller recently replaced the tires, master cylinder, and spark plugs. The carburetors and rear brake caliper were also rebuilt, and 50 miles have been added to the 24k miles indicated. This CB750F is now offered at no reserve with the factory tool kit, owner’s manual, replacement decals, seat strap, and a clean Wisconsin title.
The bike is finished in black with red and orange striping, and the decals are faded and beginning to peel. The seller states a replacement set is included. The seat was re-covered by a previous owner with an aftermarket item, and the hand grips and brake master cylinder were replaced by the seller. The front brake line has been upgraded to stainless steel, and the rear caliper rebuilt with new seals. A factory 4-into-2 exhaust is fitted, and the Comstar wheels wear tires fitted by the seller.
Instrumentation consists of an 85-mph speedometer and a 10k-rpm tachometer separated by the odometer and various warning lights. Just under 24k miles are shown.
Power comes from by a 748cc DOHC 4-cylinder with a 5-speed transmission. The engine was factory rated at 77 horsepower and features 16 valves and four 32mm Keihin carburetors. The seller rebuilt the carburetors with new float bowl gaskets, accelerator pump diaphragms, and accelerator pump and fuel rail O-rings. New spark plugs were also added and the oil and filter changed. The recent work was performed by the seller, and no service records are available. A walk-around video can be seen below.