I have a carbon Fibre front fork "BSC profile design" and when I tighten up all the screws on it snugly there is no movement (forward backward) but I go out for a ride and by the end there is a small amount of slop in it (like when pressing the front brake the fork slides back a few mil before hitting the back of the headtube) is this normal? Or is there something I need to do to reduce the slop?

  • Are you sure the slope is not between the brake pads and brake calipers
    – Rider_X
    Commented Aug 16, 2017 at 22:54

1 Answer 1


That's not normal - any knock is also going to accelerate wear so you must fix it soon.

Did you loosen the stem bolts before tightening down the headclamp? See [1]. The tightening order is the same for all materials, but the torques are vastly different. The torque range is usually 4-8 Nm for the head clamp for carbon forks, similar for stem clamps. You can use a special carbon grease to increase friction to that you succeed at low torques. See [2]

Does it have a couple of years or more of wear on it? Head clamps wear out. Head clamps for carbon frames are remarkably skimpy things.

[1] http://www.artscyclery.com/learningcenter/tightenyourheadset.html

[2] Attaching a stem to a carbon steerer: how much torque?

  • Thanks for the info, I don't know how I got it in my head to tighten the handlebars before the end cap. The slop is gone again, I'll give it a good ride tomorrow and see if this solves the issue
    – Shane R.
    Commented Aug 17, 2017 at 23:38
  • "I don't know how I got it in my head to tighten the handlebars before the end cap" ... I don't know but it might be the same way I did! And I said the same thing. Commented Aug 18, 2017 at 6:54

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