SRAM, Red XPLR eTap AXS, Rear Derailleur, Speed: 12

Wireless electronic eTap shift logic for intuitive shifting, easy setup and reliability
Orbit chain management technology keeps the drivetrain quiet and secure
1x specific for use with 10-44 XPLR cassettes and 10-36 cassettes
SRAM AXS enabled, allowing easy personalization
Larger X-SYNC pulleys for increased durability and efficiency
Compatible with existing eTap batteries (battery not included)