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  1. #1
    Constant tinkerer FastJake's Avatar
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    May 2010
    Madison, Wisconsin
    18 Post(s)
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    1994 Specialized Stumpjumper M2 FS threaded headset --> threadless?

    I posted this in the mountain bike forum, but no one there seems to answer my questions. Sorry for the re-post.

    I'm thinking about buying one of these. It looked like an awesome bike, but he said there might be issues with the fork. Since it's so old, I figured I would just replace the fork. But here's the catch: it uses a threaded headset.

    So my question is: could I put a threadless headset into this frame (and therefore run a new fork)? It's one of those "welded metal matrix composite" frames. Anyone know about these or ever done something similar? I want the bike, but I also want to be able to put a new fork in it if the original is trashed.


  2. #2
    Senior Member
    Join Date
    Aug 2005
    Pittsburgh, PA
    My Bikes
    '''96 Litespeed Catalyst, '05 Litespeed Firenze, '06 Litespeed Tuscany, '12 Surly Pacer, All are 3x8,9 or 10. It is hilly around here!
    32 Post(s)
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    In 1994 all headsets used press-in cups so the Specialized would too.

    To go from threaded to threadless you need a new fork with the correct steerer diameter, a threadless headset of the correct diameter, a new stem and some spacers. It's a very straight-forward job if you know how to remove and install headsets or relatively inexpensive if your LBS does it.

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