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Adjust

Adjust headset preload

Remove play from a threadless headset by setting the preload with the top cap, without making it stiff. For a fork that knocks when you brake.

Difficulty
Intermediate
Time
20 minutes

This guide is still being written: only the main steps are described for now.

Safety

  • After adjusting, tighten the stem bolts to the specified torque and check that the bar does not turn when you hold the front wheel between your knees.

Tools you need

  • Allen keys

    Otherwise: Multi-tool

  • Torque wrench

Step 3Set the preload

Loosen the stem clamp bolts on the steerer with the Allen keys (or else Multi-tool). Then tighten the top cap bolt a quarter turn at a time, holding the front brake on and rocking the bike back and forth, until the knocking disappears.

Lift the front end: the bar should turn freely, with no tight spot. Line the stem up with the wheel, then tighten its bolts in turn to the printed torque with the Torque wrench.

  • Check

    Check the headset and fork

    Play under braking, notchy steering, a misaligned stem and a damaged fork — ten minutes to check what holds your front wheel and your handlebar.

    Easy · 10 minutes

  • Measure

    Measure saddle-to-bar reach and drop

    Measure how far and how high the handlebar sits from the saddle, compare with typical values for your kind of riding, then adjust with spacers and the stem.

    Intermediate · 40 minutes