SRAM, GX 1X11, Rear derailleur, 1X11sp., Long cage, Black

• X-Actaution for precise and dependable 11-speed performance • X-HORIZON design reduces shift force and ghost shifting • TYPE 2.1 technologies: ROLLER BEARING CLUTCH and CAGE LOCK • 12-tooth X-SYNC™ pulley wheels • Large upper pulley offset automatically adjusts chain gap • SRAM Model ID: RD-GX-1-A1