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  1. #1
    MW is offline
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    Jan 2007

    1991 Diamondback Sorrento: seatpost diameter?

    Hi folks. I'm hoping for an assist here, but it seems like a long shot.

    I have what I believe is a 1991 Diamondback Sorrento frame, and I'm trying to figure out the correct seatpost diameter. Does anyone have this information at hand? I've tried a 26.2 post (too big) and I've tried a 25.4 post (too small).

    I suppose that leaves 25.8 or 26.0 Anyone know for sure?

    Thanks in advance for any help,


  2. #2
    ong is offline
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    Join Date
    Jun 2006
    Your LBS should have a digital micrometer, or you can pick one up at Harbor Freight for $7-8. Really helpful for a lot of stuff like this, and can both do interior and exterior diameters.

    Also, Sheldon Brown shows a 1994 Sorrento Sport at 25.8:

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