1.1/8” upper, 1.1/4” bottom, 45°×45° ACB (for carbon fibre headtube)
For differential headtube upper 1.1/8”, Lower 1.1/4”
For carbon fibre headtube
Stainless steel Angular Contact Bearings
7075T6 crown race
Stack height: 11.3 + 3 = 14.3mm
Spares:
Top bearing: TH870S (160-6483)
Bottom bearing: TH970 (160-6738)
Crown race: H6063 (160-5543)