Cane Creek 50-Series headsets bring a new, modern aesthetic while maintaining a relatively affordable price. Additional machining on the top cover and cups along with refined, laser-etched graphics give the headset a sharper, more angular appearance that feels more appropriate for today’s bikes. The 50 is a fantastic upgrade to increase the peace of mind that comes with a quiet, tight, and smooth-riding bike. Key Features 6061-T6 Aluminum cups and covers are internally relieved to minimize weight and maximize strength Features a steerer tube o-ring seal, low friction top cover lip seal, and co-molded crown race lip seal to provide protection from contaminants Steel forged and machined crown race offers increased hardness and durability ZN40 sealed cartridge bearings are zinc-coated for corrosion resistance Carbon friendly captured compression ring Interlok® spacer compatible (Sold Separately) Specifications Lower Stack Height 4 Material Aluminum Material Steel Upper Stack Height 8 S.H.I.S Upper ZS44 S.H.I.S. Stem Clamp Diameter 28.6 Threadless S.H.I.S Lower ZS44 Color Black Crown Race 30 Bearing Type Cartridge Defined Color Black Stack Height 12