HONDA CB400N (1978-1979) Specs, Performance & Photos

The Honda CB400N was a motorcycle manufactured by the Japanese motorcycle manufacturer from 1978 to 1986. As a successor to the short-lived Dream model, The CB400N featured several revisions that included a six-speed manual transmission and a European style that resembled the CB750F and CB900F.

The CB400N was similar to the smaller CB250N model but different with its larger displacement, dual disc front braking system, halogen headlight, and different markings on the instrument panel that reflected the higher top speed and lower rpm redline.

The model featured a twin-cylinder engine that had three valves per cylinder, two intakes, and one exhaust, set in motion by a chain-driven overhead camshaft. Also, the engine featured two balance shafts that reduced vibrations and coupled to a six-speed manual transmission linked to the rear wheel through a chain final drive.

For suspension and braking performance, the bike packed a telescopic fork with two 239 mm discs squeezed by hydraulic calipers on the front wheel and dual EVO shock absorbers with five-way spring preload adjustability, and a 150 mm drum unit on the rear wheel.

In the performance department, the 1979 Honda CB400N took its thrust from a 395cc four-stroke twin-cylinder air-cooled engine fed by two Keihin carburetors that helped deliver an output power of 34 hp at 9,500 rpm and 29 Nm (21 lb-ft) of torque available at 8,000 rpm.