FSA NO.11N Internal Headset H2203 16.2mm Upper / 21.7mm Lower Stack Height Spring Type-Air Spring SRAM GX rear derailleur takes

SRAM GX rear derailleur takes the place of X

11 & 12 speed chain types

Nylon composite shell and TiNox SL rails

A stem cap with a 5mm integrated spacer is included which is important since many fork manufacturers require the steerer tube to extend above the top of the stem

Able to loosen and retighten Presta valve for better inflation and keeping valve sealed when done

FSA NO.11N Internal Headset H2203 16.2mm Upper / 21.7mm Lower Stack Height Spring Type-Air Spring SRAM GX rear derailleur takesFSA NO. 11N Internal Headset H2203 16. 2mm Upper 21. 7mm Lower Stack Height. This FSA internal headset supports modern geometry and provides precise steering response ideal for performance focused riders.