Apex Eagle D1, Rear Derailleur, Speed: 12, Black

* Compatible with 50T and 52T Eagle cassettes* Works with 12-speed mechanical Apex and Eagle shifters* Use with Eagle chain* Roller Bearing Clutch controls chain tension for consistent shifting* X-HORIZON straight parallelogram design limits all movement to the horizontal axis, which makes ghost shifting impossible while also reducing shift force* Cage Lock technology makes for fast wheel changes or chain installation* SRAM Model ID: RD-APX-152-D1