Genuine FSA Orbit C-33, For Differential OD head tube headset.
Features
- 1.1/8″ upper, 1.1/4″ bottom, 45° x 45° ACB (for carbon fibre head tube)
- For differential head tube upper 1.1/8″, lower 1.1/4″
- For carbon fibre head tube
- Stainless steel Angular Contact Bearings
- 7075T6 crown race
- Stack height: 11.3 + 3 = 14.3mm



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