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  1. #1
    Senior Member slowpedal53's Avatar
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    Measuring for Threadless Fork Tube

    I'm buying a Trek MTB frame to build up as a commuter and I'll need to find a fork for it. I'm completely unfamiliar with threadless steerers so how do I calculate the size I need? Is there a standard addition to the head tube measurement?

  2. #2
    Senior Member sydney's Avatar
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    Quote Originally Posted by slowpedal53
    I'm buying a Trek MTB frame to build up as a commuter and I'll need to find a fork for it. I'm completely unfamiliar with threadless steerers so how do I calculate the size I need? Is there a standard addition to the head tube measurement?
    HT length + HS stack height + stem stack height = Minimum steerer length. I'd prefer to buy one an extra 20-30 mm long for spaacers if needed.Unless of course I absolutely knew I didn't need them.A long one can always be made shorter.Not so the udder way aaround.

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