Spacer between top crown and headset?- Mtbr.com
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  1. #1
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    Spacer between top crown and headset?

    Was getting ready to mount up a direct mount stem and noticed the spacer between the upper crown and headset (new bike) and was just wondering why. Why not lower the upper crown so it sits directly on the headset? I suppose I should cut off the excess steerer tube as well. Any reason not to other than wanting to go back to a steerer tube mount stem.

  2. #2
    Fort Valley = Gnarl Fest
    Reputation: KomodoRider's Avatar
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    no, not really any reason not to, the modern style is to slam the bars and stem for a low and fast racy feel. Steer tube cuts are forever so do a good job and get the measurement right
    OMG GUISE IT HAZ A AIER SHOCK WTF OO DUZ THAT?!?!?

  3. #3
    Stay thirsty my friends
    Reputation: 4JawChuck's Avatar
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    Might be a clearance issue, double check the fit before you cut.

  4. #4
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    Without the spacer on my 1.5 headtube, the crown was hitting and crushing the top of the headset.
    -Ryan
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  5. #5
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    Quote Originally Posted by Timekiller
    Without the spacer on my 1.5 headtube, the crown was hitting and crushing the top of the headset.
    Yep! same here. Looks like thats 1 1/8 though. I'd definitely pull it out drop the crown to test BEFORE you cut the steer. Chances are you need it there for clearance. you should be able to run a flat crown flush if you need to.

  6. #6
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    Reputation: SHIVER ME TIMBERS's Avatar
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    Quote Originally Posted by 4JawChuck
    Might be a clearance issue, double check the fit before you cut.
    that is what I am, thinking....take spacer off first....lower top crown....and re-install
    ...then start turning fork and making sure top crown is not hitting anything.....

    if all is good then set it all up with direct mount stem


    cut steer tube last
    Last edited by SHIVER ME TIMBERS; 05-21-2009 at 09:39 AM.
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  7. #7
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    My Fox 40 has a 1/4 inch spacer from the factory on my Session, I'm thinking that is serves many purposes besides just headset clearance. Making the tube clamps farther apart has stiffness advantages as well.

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