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  1. #1
    Live Free or Ride!
    Reputation: GiantMartin's Avatar
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    30.9 post size, what size clamp

    The seatpost size is 30.9. What size clamp do I get?
    2007 Giant Anthem 1
    2009 Giant XTC 0

  2. #2
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    Quote Originally Posted by GiantMartin
    The seatpost size is 30.9. What size clamp do I get?
    34.9. FYI The frame comes with a bolt on seat clamp.

    Stefan

  3. #3
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    Reputation: GiantMartin's Avatar
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    Ya, but i wanna get a flashy Salsa clamp :-)
    2007 Giant Anthem 1
    2009 Giant XTC 0

  4. #4
    2010 Glory custom FR
    Reputation: frango's Avatar
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    but it doesn't make any difference, because outer diameter of the seattube is still the same, 34,9mm
    pozdro
    frango

  5. #5
    I AM I AM
    Reputation: ducktape's Avatar
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    I'll second that, I've had a few different Giant bikes that take a 30.9 seat post (Trance, Alia, STP), and they all took a 34.9 seat clamp. Exception being an old Specialized Hardrock I had, it was also a 30.9mm seat post but the seat clamp diameter is different (Specialized obviously use a different tube thickness to Giant).

  6. #6
    MTB B'dos
    Reputation: LyNx's Avatar
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    Well actually what you'll find mostly is 35mm and that works just fine. Also look at HOPE for nice anodized bits..........headset, seat clamp, BB, Skewers, bar end plugs.

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