On any surface you can imagine, in any drivetrain configuration, the Rival e Tap AXS rear derailleur will handle it. Secure chain management & fast, precise shifting make for a smooth & quiet ride, every time. FEATURES Wireless electronic e Tap shift logic for intuitive shifting, easy setup & reliability Compatible with both 1x & 2x drivetrains 36t cog max derailleur works with 10-28, 10-30, 10-33, & 10-36 cassettes SRAM AXS™ enabled, allowing easy personalization Chain management keeps the drivetrain quiet & secure X-SYNC pulleys for increased durability & efficiency