Integrated headset 1 18 integrated headset is designed to fit in 1 18 frames where the bearings fit directly into the frame headset uses custom made replaceable stainless steel bearings to resist corrosion the cups taper ring and crown race which is split for easy installation and removal are all machined from 2014 t6 aluminium sealing is achieved through an adjustable taper ring cover and integrated rubber seal weight 94g