sram etap rival axs d1 12-speed medium cage rear derailleur in black

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 reliabilityCompatible with both 1x and 2x drivetrains36-tooth cog max derailleur works with 10-28, 10-30, 10-33, and 10-36 cassettesSRAM AXS™ enabled, allowing easy personalizationChain management keeps the drivetrain quiet and secureX-sync pulleys for increased durability and efficiency