SOHC.co.uk Forums > CB500/550

Headstock number

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Popstar:
The plate on the headstock of my bike has 6/71 on it does that make it a KO or K1 ?

Bryanj:
Yes it does



But seriously many other things make the difference,
Put up pics of both sides and i will tell you

Seabeowner:
Mine is about 7/71 and about 6600 higher number. They certainly were churning them out.
I think just about all at that time went to the USA and maybe Japan and will be K0.

Popstar:
Thanks,this one is a US import,and yes that’s some difference in production numbers, it’s no wonder they conquered the world.i wonder what month production started.

Bryanj:
I can answer that it was Feb 1971 as i own frame number 36

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