Silky angular contact bearings for smooth, long-lasting performance. Ritchey high-webbing grease.
"Press Fit" and "Drop In" headset bearings are located inside the steerer tube which results in a lower stack height. In contrast to "Press Fit" headsets "Drop In" headsets don't have to be pressed in. The bearing rests directly on the angled (36° or 45°) surface of the steerer tube.
Buy Ritchey Logic Zero Pro Press Fit Headset from Chain Reaction Cycles, the worlds largest online bicycle store.