Ritchey comp drop in integrated headset drop in headsets with full complement angular contact cartridge bearings alloy bearing cover and cap integrated system threadless headset for campagnolo hiddenset compatible frames with 41 8mm headtube id features comp alloy top bearing cover and compression top cap sealed cartridge bearings 68mm stack height 4545 degree angular contact bearings 418mm buy ritchey components from chain reaction cycles the worlds largest online bike store