SRAM Apex Rear Derailleur

* Long cage 42t capacity* CAGELOCK technology for easy wheel removal and installation* Compatible with 10-speed and 11-speed SRAM 1x road systems* Equipped with ROLLER BEARING CLUTCH* X-HORIZON design reduces shift force, eliminates ghost shifting and chain slap* Large upper pulley offset automatically adjusts chain gap* Steel cage* SRAM Model ID: RD-APX-1-A1