Part of the new SRAM RED XPLR AXS 13-speed drivetrain, the RED XPLR AXS 1x Rear Derailleur provides precise gravel-specific shifting and chain management to keep us in full control over any terrain. The Hangerless Interface and Full Mount attachment provide unmatched impact resistance, while the Magic Wheel ensures the chain continues to move even if debris gets into the lower pulley.