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  1. #1
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    Apr 2012
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    Default 39 & 35 mm Fork Tube Thread size and pitch!

    Hey C/C,

    I'm looking for some measurements of 39mm fork tube caps. I want to turn some extensions on my lathe.

    Just looking for the size and pitch of fork caps, like matching a bolt!

    Unfortunately, I don't have any on hand.


    Thanks!

    Mark

  2. #2

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    Sep 2013
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    254

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    If I remember right the pitch is 20. Call up Frank from forks by frank or what ever. Ask him he km nows. I was gonna do the same this g last year but decided its much bettet to just buy longer fork tubes. Any extensions over 3 inches won't be very safe man.
    Last edited by scuzzy; 04-23-2014 at 2:37 PM.

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    I have a couple buddies that run 4 over plugs and they seem pretty stable. I know what you're saying though... at least the aluminum is going to be solid.

  4. #4

    Join Date
    Sep 2013
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    I suppose if you keep the end of the thread above the top, of the bottom tree you'll be ok. I wouldn't go any lower than that.


    I went 8 over on my tubes so slugs were out of the question for me.

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