Road racing. CX. Gravel. Coffee rides. This derailleur truly does it all and looks good doing it. The single cage length works with any cassette size from 10-28T to 10-36T, in 1x or 2x configurations. Shifts are fast and precise, and the Orbit fluid damper keeps the chain in control, whether the obstacle youre hitting is a pothole or a root. *Orbit chain management technology keeps the drivetrain quiet and secure* Compatible with both 1x and 2x drivetrains* SRAM AXS enabled, allowing easy personalization* 36T-max derailleur is compatible with cassettes with big cogs from 28T to 36T* Battery not included* SRAM Model ID: RD-FRC-E-D2