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The Honda CB900F was produced between 1979 and 1983, and it was the first production bike with a 16-valve 4-cylinder engine. The CB750F (that the United States got) and the CB900F (that Europe got) were issued at the same time. While the U.S. only got the CB750F in 1979, Europe got the CB900F. The CB900F was introduced to the U.S. around two years later, in 1981.
P.S. I was told that the CB750KZ, was issued in 1978 in the States, and that may therefore be the first one with a 16-valve engine. I am sceptical and not sure about this though, since as far as I know the 16-valve engine was introduced in '79. However, I felt I should mention such a comment here.
The featured bike is an FB (1981).
The video was filmed on 15/09/2019.
Differences thoughout the years:
1979 - First model: CB900FZ
35mm forks; conventional silver twin five-spoke Cornstar wheels; plain plastic bushes in swinging arm; brake calipers single piston type.
1980 - CB900FA
Air-assisted forks fitted; swinging arm now fitted with needle rollers to improve handling. Wheels featured reverse Cornstar pattern.
1981 - CB900FB
Forks upgraded to 37mm to reduce flex; cam tensioner revised.
Minor cylinder head revisions; brake calipers upgraded to twin pistons.
1982 - CB900FC
Engine now rubber mounted. TRAC anti-dive fitted; stanchions upgraded to 39mm; previously fitted 19in front wheel replaced by 18in.
1983 - CB900FD
Previously alloy engine finish now painted satin black.
Revised wheels fitted and passenger grab rail introduced.
Source of Information:
www.classicmec...
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