What size/kind of closed bearing headset will I need? Or how do I find out? Bike is 2005ish specialized Allez, originally with open ball bearings headset (don't know the proper nomenclature ). See captions for details. : r/bikewrench
Specialized Allez Sprint headset bearings MY16, Sports Equipment, Bicycles & Parts, Parts & Accessories on Carousell
Specialized Allez & Allez Sprint Headset Bearings
Specialized Allez/crux Tapered 1-1/8 X 1.5 Campy Style Steel Bearing Headset W/alloy Spacer Set - £35.99 | Headsets - Spares, spacers and top caps | Cyclestore