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This compression plug provides an anchor point to set the headset preload on road, MTB, or gravel bikes with carbon forks. It is important to use a compression plug – aka expander plug – in forks with a carbon steerer tube instead of a star nut. Pair this with a Wolf Tooth stem cap for a bit of color.



  • Forks with 1 1/8" steerer tubes.
  • Designed for carbon steerer tubes but works with metal steerer tubes with ID from 23.5mm to 24.5mm.
  • Never use a star nut on forks with carbon steerers.


Tech Specs

Weight: 26g
Insertion Depth: 28mm
Expansion Bolt Torque Spec: 5-7 Nm 

  WARNING Handling this product will expose you to chemicals, including lead, known to the State of California to cause cancer and birth defects or other reproductive harm. Wash hands after handling. For further information go to www.P65Warnings.ca.gov.

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