Ritchey wcs headset bearingthe highest model in ritcheys range, these wcs headset bearings will breathe new life into your bikes front end'. '.strtoupper('w')ith their fully sealed construction and corrosion resistant titanium coating, theyll give you smooth and precise steering that will endure the wettest weather and toughest riding conditions.features headset type fully integrated bearing type angular contact bearing acb sealed cartridge bearing angles 45deg x 45deg compatibility all ritchey fully integrated headsets steerer tube compatibility separate 1.1 8 and 1.5 options use road or mountain bike mtb comes as a pair except for the 1.5 sized option which is just one bearing titanium coating for increased corrosion resistance genuine ritchey quality replacement bearingsbuy ritchey components from chain reaction cycles, the world's largest online bike store.