Chris King GripNut Headset

The GripNut uses a unique two-piece locking mechanism that separates the adjustment function from the locking function. This allows you to secure the headset without needing a second locknut, which prevents the common issue of the headset tightening further—and potentially damaging your steerer tube threads—during the final lock-down.

The GripNut is designed for a 1-inch threaded steerer tube with a 30mm head tube inner diameter and a 26.4mm crown race. It is a perfect fit for many classic road frames, but you should verify your frame's specific head tube and fork measurements before purchasing.

Yes, Chris King headsets are designed to be fully serviceable. The sealed cartridge bearings can be cleaned and re-greased, which is a significant advantage for long-term reliability compared to standard press-fit or non-serviceable headsets.

You will need standard headset wrenches to adjust the GripNut, but because of its unique design, you do not need the traditional second locknut wrench. A standard 32mm headset wrench is typically sufficient for the adjustment process.

No, the GripNut is specifically engineered for threaded steerer tubes. It will not work with threadless forks, which require a different headset standard.