The 1.5 is for a 1 1/2" frame with 1 1/2" forks. (eg Cannondale, Orange) If you are using a 1 1/2" frame with 1 1/8" forks, see the FSA ORBIT XTREME PRO 1.5R Headset.
Specifications
- Forged chromoly cups
- 1.5" industrial bearings
- Stainless steel crown race
- Forged and CNC'd 7075/T6 cups
- 21mm headtube insertion
- Stack height 16.4+13.4=29.8
- Weight: 172.2g