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  • Best guess at the correct seatpost size?

    OD of the seat tube is probably 31.8 (i.e. 1.25" nominal), wall thickness is likely to be 0.7 for single butted tube or 0.8 for double butted, so 30.4 or 30.2 seat post. I have a 30.4 you're welcome to try, just a basic Kalloy thing.

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