FSA Orbit IS 138 Headset

- 15.2mm/9.7mm CF IS-2-138
- 1-1/8" / 1-3/8", 36°/ 45° ACB
- For tapered 45mm / 52mm OD head tube
- For 1-1/8" to 1-3/8" tapered fork
- Carbon fiber top cover
- Angular Contact Bearing (black seal)
- Stack Height 16.1mm
- 65.4 grams