Home » headsets » Threadless Headsets » y95a-1 THREADLESS HEADSETS Y95A-1 EC29/25.4 | EC29/27 EC30/25.4 | EC30/26 Alloy Cap/Cup Sealed Bearings Top Nut: 1″ Cup O.D.: 30/30.2 Crown Cone: 27/26.4 Height: 29.1 Technical Diagram