SRAM GX 1X11

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 Attributes Maximum Cog 42T Minimum Cog 10T Cage Long RD Weight 265g Speed 11 Mount Standard