SRAM Rival AXS D1 12-Speed Rear Derailleur (Battery Not Included)

On any surface you can imagine, in any drivetrain configuration, the Rival eTap AXS rear derailleur will handle it. Secure chain management and fast, precise shifting make for a smooth and quiet ride, every time.
Features:

Wireless electronic eTap shift logic for intuitive shifting, easy setup and reliability
Compatible with both 1x and 2x drivetrains
36t cog max derailleur works with 10-28, 10-30, 10-33, and 10-36 cassettes
SRAM AXS enabled, allowing easy personalization
Chain management keeps the drivetrain quiet and secure
X-SYNC pulleys for increased durability and efficiency

Specification:

Speed (RD): 12s
Cable pull ratio: n/a
Cage (RD): n/a
Max tooth: 36
Color (RD): Black
Pulley bearings material: Steel
Cage material (RD): Aluminum