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1965 Honda CP77 — Ulsan Metro City, Rep. Korea
Restored with original parts — Owner: J. Doe

Mfg Date by S/N#

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thuff1150
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Location: Carson City

Mfg Date by S/N#

Post by thuff1150 » Sat Feb 14, 2026 5:08 pm

Hello, this is certainly a novice question. But how do you determine the year a Honda CB or CL was manufactured by the frame serial number as well as the engine number?
Thanks,
Ted Huff

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Michael Stoic
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Re: Mfg Date by S/N#

Post by Michael Stoic » Sun Feb 15, 2026 10:16 am

There are many honda305 forum threads discussing this, some with very good specifics.


Additionally, I can cross reference the SNs with other honda305 Registry entries for a pretty conclusive ID.

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Mike Stoic
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Tim Allman
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Re: Mfg Date by S/N#

Post by Tim Allman » Sun Feb 15, 2026 10:26 am

Here's a screen shot from a parts manual. I have no information beyond this.
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Screenshot_20260215_101944.png

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