Are the eTap® HRD 2x11 brake levers compatible with mountain calipers? November 21, 2019 17:21 Updated No. eTap® HRD 2x11 shift-brake levers are only compatible with eTap® HRD 2x11 calipers. Related articles I want to build a MTB with drop bars for bike packing. Will my road shifter work with my MTB rear derailleur, or vice versa? Are RED and Force eTap AXS™ shift levers compatible with Eagle™ AXS™ rear derailleurs? Do eTap® HRD brakes use DOT fluid or mineral oil? How do I size a chain for a 1x SRAM Eagle AXS™ drivetrain? How do I size a chain for a 2x SRAM eTap AXS drivetrain? Comments 0 comments Article is closed for comments.