Can I just buy the eTap® HRD 2x11 shifters and use them with my existing brake calipers? November 21, 2019 17:20 Updated No. eTap® HRD 2x11 shift-brake levers are only compatible with eTap® HRD 2x11 calipers. Related articles Are RED and Force eTap AXS™ shift levers compatible with Eagle™ AXS™ rear derailleurs? Does eTap® HRD 2x11 use the same hoses and fittings as other SRAM road disc brakes? Are eTap® HRD 2x11 calipers compatible with SRAM’s other HRD levers? What are the main differences between RED eTap AXS™ and Force eTap AXS™? Why did SRAM choose DOT 5.1 over mineral oil? Comments 0 comments Article is closed for comments.