Honda CM400


The Honda CM400 is a street bike produced by the Honda Motor Company from 1979 to 1982, part of a series of motorcycles with the prefix 'CM' using various engine capacities. It was a precursor to the Honda Rebel series of motorcycles. The bike had a air-cooled parallel twin-cylinder engine. It was equipped with electric start and electronic ignition. Models included the CM400A, CM400C, CM400E and CM400T. The CM400C was produced only in 1981 making it one of the more rare model types.
The Honda CM series all generally resembled the older-style flat-seat bikes from the 1960s and 1970s, with the exception of a slightly raised passenger area seat and small plastic fairings for the battery and electrical. These are "standard" style motorcycles but do have some elements of the cruiser.
The CM400 series includes only a speedometer and three indicator lights with a tachometer for the C and T models. The E model had wire wheels and drum brakes, while the others had Comstar wheels and a front disc/rear drum braking setup. While not particularly powerful, the CM400's handling makes it a suitable starter bike.
Many engine components are common with the Honda CB400T models from the same year. The parallel twin engine has three valves per cylinder and a five-speed manual or two-speed automatic transmission.
In 1982, the CM engine was bored out to a engine and the series was renamed CM450
In the 1984 film Purple Rain, Prince, in the role of The Kid, rode a customized Honda CM400 and he is also seen with it on the cover to the soundtrack of the same name.