The Rival eTap AXS rear derailleur can be used in both 1x and 2x drivetrain setups. It is equipped with a spring clutch for excellent chain management in both 2x and 1x applications.
For those wanting to use a larger cassette in a 1x-specific drivetrain, we offer the Rival XPLR eTap AXS rear derailleur, which can be paired with our 10-44T, 11-44T, and 10-36T cassettes.
The larger 10-50T, 10-52T, or 11-50T Eagle cassettes in a 1x configuration will require an Eagle AXS rear derailleur and an Eagle chain. Eagle AXS rear derailleurs are not compatible with a 2x system.
For more details on how to combine AXS components see our AXS Components Compatibility Map.