SRAM RED and Force eTap AXS shift-brake levers or the eTap AXS BlipBox with firmware version 2.29.4 or later can be paired with RED eTap 11-speed front and rear derailleurs using the RED eTap pairing process.
How do I update firmware using the AXS App?
Note: SRAM RED eTap 11-speed front and rear derailleurs do not require a firmware update to pair with firmware 2.29.4 compatible SRAM eTap AXS shift-brake levers and eTap AXS BlipBox.
Rival eTap AXS shift-brake levers are not compatible with eTap 11-speed derailleurs due to differences in their electronic hardware, and do not support this firmware feature.
Please see the videos below for instructions on how to pair components together: