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Thread: Seat post size

  1. #1
    Member Brueg's Avatar
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    Seat post size

    When I bought my bike a 2008 Iron Horse Azure Sport I downloaded the specs. It says (Seat Post: EASTON EA30, 31.6MM) ,but on the side of the seatpost it says 27.2
    Is there something simple I'm not understanding here.

  2. #2
    Senior Member mechBgon's Avatar
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    The only way both could be correct, is if someone added a reducer shim to allow use of the popular 27.2mm post size in a frame made for 31.6mm. If the frame doesn't have a shim, then the specs are incorrect.

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    Member Brueg's Avatar
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    No shim, Thanks

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