* To suit tapered forks* Upper cup Stack height: 3mm – Total upper stack height including bearing cover: 8mm* Lower cup Stack height: 3mm* Upper Bearing: 41mm OD, 45 x 45 Degree AC sealed bearing* Lower Bearing: 52mm OD, 45 x 45 Degree AC sealed bearing* Split type 7075-T6 aluminium crown race for simple, tool free installation* Headset comes complete with top-cap (star-nut included), bearings and crown race – all parts required for fitment