With a semi-integrated Ahead headset, both bearing cups disappear into the head tube, and only the slightly thicker ends are visible from the outside. You can recognise a semi-integrated headset by the abbreviation ZS (Zero Stack). If you want to mount a ZS headset, you'll have to have both bearing cups pressed into the headtube. The integration of the bearing shells inside the tube also means a wider head tube, which makes it even more stable. In addition, the inner bearings bring the fork and stem closer to the head tube, which allows for a flatter design. Among our range, you'll find semi-integrated headsets in a variety of colours and widths. Combinations of ZS and EC or IS headsets are also possible and available in our shop.