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  1. #1
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    Shim for 1-1/8" Threaded Headset

    Hi There,

    I have an older mountain bike and I would like to replace its stem with a 1" diameter stem. However, my bike currently has a 1-1/8" diameter stem. Can I get a shim that I can insert into my threaded headset that would allow me to use a stem that is sized for a 1" threaded headset with my bike?

    Thanks in advance.

  2. #2
    Non Tribuo Anus Rodentum and off to the next adventure (RIP) Stacey's Avatar
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    Huh? Why?

  3. #3
    Senior Member
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    I'd like to use a Nitto Technomic extra long stem on my bike, but these are only 1" in diameter. They don't offer a 1-1/8" diameter stem.

  4. #4
    * vpiuva's Avatar
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    (deleted as more useful info follows)
    Last edited by vpiuva; 10-04-07 at 12:48 PM.

  5. #5
    Senior Member Grand Bois's Avatar
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    There are adapters made for that purpose:




  6. #6
    Senior Member
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    Thanks Dirtdrop. I'll have to visit my LBS to see if he can order one (or if he has one in stock).

  7. #7
    Senior Member
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    Several year ago I was looking for exactly that type of adapter as I wanted to use an existing set of 1" road bars and stem to convert a Trek hardtail MTB for drop bar use and the Trek had a 1-1/8" headset/fork. I never found one and wound up buying a 1-1/8" quill stem. It wasn't that easy to locate either.

    Where did you find that adapter?

  8. #8
    Senior Member Iowegian's Avatar
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    edit !!

    Whoops!! - these parts (A-Headset shims) are meant for threadless forks and stems. Not sure how they would work with a threaded system.
    Last edited by Iowegian; 10-04-07 at 10:42 PM.

  9. #9
    Senior Member Grand Bois's Avatar
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    Quote Originally Posted by HillRider View Post
    Where did you find that adapter?
    I think you asked me that last time this came up. The answer was that I can't remember and I still can't. "Online somewhere" is the best I can do.

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