Chris King NoThreadSet Headset

This classification indicates the headset is designed for an External Cup (EC) system with a 34mm upper cup diameter and a 44mm lower cup diameter. It is specifically engineered to fit frames that accommodate a tapered steerer tube, transitioning from 1-1/8 inches at the top to 1-1/4 inches at the crown race.

Yes, because this is an external cup headset, you will need a professional-grade headset press to install the cups into your frame without damaging them. We recommend having a shop perform the installation if you do not have the proper tools, as precision is critical for bearing longevity.

Yes. Chris King uses heat-treated, surgical-grade steel races that are designed to wear in rather than wear out. With regular maintenance and proper lubrication, the bearing surfaces become smoother and more efficient the more you ride.

The frequency depends on your riding conditions, but for most riders, a thorough cleaning and re-greasing once a year is sufficient. If you frequently ride in wet, muddy, or dusty environments, you should inspect and service them more often to ensure the seals remain effective.

No, this specific model is designed exclusively for tapered 1-1/8 inch to 1-1/4 inch steerer tubes. It will not be compatible with a standard straight steerer tube.

External cups place the bearings outside of the headtube, which generally allows for larger, more robust bearings that can handle higher loads and impacts. This design is often preferred for its durability and the classic aesthetic it adds to the bike's front end.