Sram Apex XPLR AXS D1 12 Speed Rear Derailleur - Max 44T - BATTERY NOT INCLUDED 

The Apex shift-brake lever features our tried and true hydraulic braking platform, now supercharged to 12 speeds to work with our 1x Eagle and XPLR gearing choices. We’ve incorporated the celebrated ergonomics of our AXS controls for optimized control and comfort for the widest range of hand sizes. Reach Adjust allows personalization, and the Stealth-a-majig hose connector makes quick setup a breeze.

AXS enabled for easy setup, personalization, and reliability 1x specific for use with 11-44T XPLR, 10-44T XPLR, and 10-36T cassettes Chain management keeps the drivetrain quiet and secure