SRAM RED eTap AXS Monobloc calipers use the same pad type as the previous SRAM RED eTap caliper and all of our Force, Rival, and Apex HRD 11-speed disc brake systems.
SRAM RED eTap AXS HRD two-piece calipers and all Force eTap AXS HRD calipers use a different pad with a guide pin in the middle. Replacement pad part numbers are listed on page 30 of the spare parts catalog, available here.