SRAM Force AXS eTap Rear Derailleur - 12-Speed, Medium Cage, 36t Max, (Battery Not Included), Iridescent Gray, D2

The SRAM Force AXS rear derailleur features a single cage length that works with any cassette size from 10-28T to 10-36T, in 1x or 2x configurations. Shifts are fast and precise, and the Orbit fluid damper keeps the chain in control, whether the obstacle you’re hitting is a pothole or a root. Wireless and proven eTap shift logic, AXS connectivity and advanced chain management mean this derailleur does exactly what you want when you need it.
Orbit chain management technology keeps the drivetrain quiet and secure
AXS enabled for easy setup, personalization, and reliability
Compatible with both 1x and 2x drivetrains
36T-max derailleur is compatible with cassettes with big cogs from 28T to 36T
eTap shift logic for intuitive shifting
Large X-SYNC pulleys for increased durability and efficiency