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

* Compatible with cassettes with 44T large cogs* Use with Flattop chain* Works with 12-speed mechanical Apex and Eagle shifters* 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* SRAM Model ID: RD-APX-1-D1