Sram Rival eTAP AXS D1 12 speed black rear derailleur

The precision and reliability of 12-speed eTap AXS now at a whole new level. Secure chain management and fast precise shifting make for a smooth and quiet ride every time. 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. X-SYNC pulleys for increased durability and efficiency