Difference between offset and zero offset seatpost- Mtbr.com
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  1. #1
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    Difference between offset and zero offset seatpost

    I tried googling but couldn't find an answer: what's the difference between an offset and a zero offset seatpost? Thanks in advance.

  2. #2
    Fat-tired Roadie
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    Usually about 25mm.
    "Don't buy upgrades; ride up grades." -Eddy Merckx

  3. #3
    R.I.P. DogFriend
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    The terms offset and setback are somewhat interchangeable, but the offset can be achieved a couple different ways, and some seatposts use an offset (or bend) in the post itself and some use an offset clamp design.

    So, you can have a straight post with a zero offset clamp, a straight post with an offset clamp, or a setback post (also known as a 'layback' post) with a zero offset clamp. I can't think of any examples of a setback post with an offset clamp.

    You can achieve the same effect with either a setabck post or an offset clamp. The Thomson layback post yeilds a 16mm offset, and there are many different offset clamp designs that yield about the same net offset or even more up to 35mm of offset.

    1) straight post with a zero offset clamp design

    2) straight post with an offset clamp design

    3) setback (layback) post with a zero offset clamp design
    Attached Thumbnails Attached Thumbnails Difference between offset and zero offset seatpost-thomsonmasterpieceseatpost.jpg  

    Difference between offset and zero offset seatpost-bent_saddle-rails_01a.jpg  

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  4. #4
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    Thanks jeffj! That clears it up for me.

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