Extralite UltraTop Headset

The Extralite UltraTop is an ultralight, high-precision upper headset assembly designed for integrated and semi-integrated head tubes. Machined in Italy from 7075-T6 aluminum, it combines a minimalist design with aerospace-grade tolerances to deliver smooth steering and long-term reliability at just ~15-25g.

Using high-grade sealed cartridge bearings and an anodized, laser-etched cap, the UltraTop ensures low friction, corrosion resistance, and consistent performance under load. The thin-wall cup and bearing seat design minimize stack height, making it a favorite among weight-conscious riders and custom builders.

Ideal for pairing with the Extralite UltraStar 4 expander plug and HyperStem, the UltraTop is a cornerstone component for precision road, gravel, or XC setups where every gram and detail matter.

Sizing

To select the headset that properly fits your frame simply measure the Inner Diameter of the headtube on your frame and pick the corresponding headset. Check out Extralite’s page that has a handy table to view every option and special information about each headset.