Designed for bicycles with Zero Stack press-fit headsets, the Classic ZS44 headset top features full-complement stainless steel angular contact cartridge bearings packed with Ritchey high-webbing grease. 
Wrapped in our timeless high-polish finish, the Classic Press Fit Upper headset adds that classy detail your bike deserves.

Top cap: 7.3
Material: Alloy
Upper Fit (S.H.I.S.): ZS44/28.6
Upper HT OD/ID: 50/44mm
Bearing: Sealed cartridge
Finish: High-polish silver
Weight: 43g (7.3mm