• 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