This new SX Eagle derailleur is the entry point to the Sram Eagle Ecosystem Sharing many features with the rest of the Eagle Ecosystem like the proven Sram 1x-specific X-Horizon body design, it can accommodate both 11-50T and 10-50T cassettes A full featured Eagle derailleur, compatible with the Eagle Colorsystem X-Sync pulley technology provides greater efficiency, crisper shifting, and quieter operation Cage Lock offers discovery-level riders easy wheel removal