Theory Integrated Headset

This headset is designed specifically for frames with an integrated headtube that follows Campy specifications. You need to ensure your frame's headtube has an inner diameter of 41.8mm and is compatible with a 45-degree bearing angle.

Campy spec refers to the Campagnolo standard for integrated headsets. It dictates the specific bearing dimensions and angles—in this case, 45 degrees—required to seat the bearings directly into the frame without the need for external cups.

Yes, this is a complete integrated kit. It includes the necessary bearings and the 10mm top cap, providing all the essential components to replace your current headset or complete a new build.

The 10mm cap height is considered a low-profile design. While it provides a sleek, streamlined look, it will add a small amount of stack height to your front end, which may slightly alter your handlebar position compared to a flush-mount or zero-stack cap.

Compatibility depends on your fork and frame combination, not just the headset. As long as your frame is designed for an integrated Campy-spec headset and your fork has the correct steerer tube diameter to match your frame's headtube, this headset will function correctly.