Integral headset 1 18 integral headset is designed to fit low stack 1 18 frames 44m top and bottom frame diameter made to be used with 1 18 forks 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 113g