This top of the range headset comes with a 3 year manufacturing warranty quad sealed precision angular contact bearings coupled with double sealed bearing housing keeps the british climate at bay utilises flush seal technology to further protect the longevity of the bearings fully replaceable bearings and full spares back up available expanding collar design means once you tighten the headset it stays tightened alloy top cap and star fangled nut included weighing in at only 92g