Rival eTap AXS is available with flat mount disc brake calipers only. If you have post or IS brake mounts, many of our SRAM Level disc brake calipers are compatible with the Rival eTap AXS hydraulic shift levers. Level calipers are sold separately.
For more details on how to combine different models of levers and calipers, see our Disc brake lever and Caliper Compatibility Chart.