Genuine FSA Orbit CF-40 ACB differential OD head tube 1.1/8″ – 1.5″ headset.
Features
- Differential head tube, 45° x 45° ACB upper industrial bearing lower (for carbon fibre head tube)
- For differential OD head tube
- Upper Angular Contact Bearings, lower Industrial bearing
- Stainless crown race
- Carbon top cover
- Stack height: 9.4 + 0.9 = 10.3mm



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