Semi integrated 1 1/2" (1.5", tapered) headset lower part for headtube inner diameter of 56 mm (55.9 mm). The cup is made from aluminium, the bearing from stainless steel. A directly on the crown integrated custom molded dual lip seal protects the lower bearing in the toughest conditions.
Wolf Tooth Precision headsets are machined in the USA out of aircraft grade aluminium with superior sealing for protection against the elements. These ZS headsets are for frames with internal bearing cups that are pressed into the frame.
Construction type (Ahead/Thread): Ahead
Included in delivery: 1 headset lower part incl. crown race
Material: cone: aluminium | cartridge bearings: Enduro stainless steel