Cane Creek Top Cap 1-1/8 Black Each - .HD01107-01K Crown races, compression rings and bearings for servicing Cane Creek headsets (see Aheadset for othe * Upper and lower replacement bearings sold as a set for tapered fork headset applications ** AER series bearings are cross compatible across the line, using aluminum and steel construction, 40 series crown races are cross compatible with all series headsets