Differential headtube, 45°×45° ACB upper industrial bearing lower (for carbon fibre headtube)
For differential OD headtube
Upper Angular Contact Bearings, Lower Industrial bearing
Stainless crown race
Carbon top cover
Stack height: 9.4 + 0.9 = 10.3mm
Spares:
Top bearing: TH870 (160-1647)
Bottom bearing: TH073 (160-6761)
Crown race: H6083 (160-5536)