GEARBOX SRAM RIVAL E-TAP AXS XPLR 12V 44DThe Rival XPLR eTap AXS derailleur is 1x specific and has been designed for the XPLR 10-44 cassette; which translates into a limitless drivetrain that tackles asphalt and trails with the same poise. GEARBOX SRAM RIVAL E-TAP AXS XPLR 12V 44DThe Rival XPLR eTap AXS derailleur is 1x specific and has been designed for the XPLR 10-44 cassette; which translates into a limitless drivetrain that tackles asphalt and trails with the same poise.With the proven eTap wireless switch logic, AXS connectivity, and advanced chain management; so this change does exactly what you need when you ask it.Electronic and Wireless eTap Shift Logic - Shifts are intuitive, reliable, and easily set up. Special for 1x and XPLR 10-44 cassette. SRAM AXS compatible.