Specialized Crux/Aethos Headset Plug Expander Assembly (Black) (Lightweight Version) (For Carbon Ste
Specialized Crux/Aethos Headset Plug Expander Assembly (Black) (Lightweight Version) (For Carbon Ste, Lightweight Headset Plug Expander Assembly For Carbon Steerer. Compatible with the following bikes: Specialized Aethos Specialized Crux