Traditional , external 1 1/8" lower headset part for headtube inner diameter of 34 mm (33.9 mm).
One thing that is common throughout all Hope headsets is the quality of materials used to manufacture the headsets in the Barnoldswick Factory. The CNC machined headsets come with sealed stainless steel bearings. Sealing is achieved through an adjustable taper ring cover and integrated rubber seal. The bearings also incorporate their own sealing, and being made from stainless steel resist corrosion. The cups, taper ring and crown race (which is split for easy installation and removal) are all CNC machined aluminium. The Hope headset can be used for all kinds of biking, it is strong enough for downhill and light enough for cross country or road biking.