HONDACB400F 1977 - 1978

　　The Honda CB400F was a motorcycle part of the Cb series in Honda's range, first introduced in 1974 at the Cologne Motorcycle Show, Intermot, and later dropped from the range in 1978. The bike was an upgraded version of the CB350 model released in the previous year.

　　At the time, Honda's focus was more orientated on building cars, such as the Honda Civic, so the motorcycle development was limited to mechanical changes. To develop the CB350F into the CB400F, Honda increased the bore and modified the cylinder head for more compression ratio, but also, as a first, they added a sixth ratio to the transmission.

　　Also, the CB400F was well received by the motoring press and reviewers, with its clean lines and Cafe Racer looks, however, in America, the bike didn't hit the sales that Honda anticipated. To gain the lost sales, the maker revised the model for the US market with higher-mounted handlebars and footpegs placed further forward, but even so, the CB400F struggled against the twin-cylinder Kawasaki model, which was 15-20 % cheaper than the CB400F.

　　In the performance department, the 1978 Honda CB400F took its muscles from a 408cc four-stroke four-cylinder air-cooled engine with four Mikuni carburetors and delivered an output power of 37 hp with maximum strength at 8,500 rpm and 33 Nm (24 lb-ft) of torque available at 7,500 rpm.

　　In addition, the bike came with standard features, such as a one-piece two-up seat, a round headlight, a blacked-out steel frame, a four-into-one chromed exhaust system, wire-spoke wheels, and two analog instrument clusters for speed and rev.