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Due to the unfortunate COVID-19 Pandemic, we are currently experiencing an unprecedented volume of online orders, in person visits, and bike repairs.
We are doing our very best to fill orders, help customers, and keep your bikes working. Please expect to see some delays at this time.
Thank you for your understanding and patience.

FSA Orbit IS 138 Headset

FSA Orbit IS 138 Headset
  • Color: Black
Steerer Diameter:
1-1/8 – 1-3/8-inch tapered
Please select options


- 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

Part Numbers

Option UPC MPN
Black / 1-1/8 – 1-3/8-inch tapered 400310058560 121-0343