Deore M4120 Shadow 10/11-speed rear derailleur for the dependable shifting performance and durabilityShadow design features a super low profile design and optimized slant angle for super light shifting actionSingle tension spring prevents contact with the chainstay resulting in a silent rideDirect cable routing prevents snagging from any trail side hazardsWide alloy links and pivot bodyFluorine-coated link pin bushingsStrong return spring for a positive shifting feelDurable 11T bearing pulleys for low frictionTop normal spring uses the spring to select higher gearsHG-X11 11-speed and HG-X 10-speed compatibleMax low sprocket: 42T (2x11/2x10-speed)41T capacity SGS cage
