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  • stem differences
  • eviljim
    Free Member

    Sorry being a little bit lazy, what is the difference between a standard stem and an oversize stem.

    mrsflash
    Free Member

    ones biggerer. 😀

    brant
    Free Member

    The clamp diameter of the bar.

    Standard = 25.4mm
    OS = 31.75mm (or 31.8 or 31.6) ish

    eviljim
    Free Member

    ok thanks

    When did they start using over size?

    clubber
    Free Member

    IIRC it started around 1999 on road bikes and has gradually become more popular off road.

    I use OS on road but only on one of my mtbs and only then because I got a bargain carbon bar that was OS.

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