What pad spacer does my Rival eTap AXS brake caliper use? April 15, 2021 13:35 Updated See the bleed manual for a full list of bleed blocks and pad spacers used for all road disc brakes. Related articles How do I upgrade my current bike to Rival eTap AXS? How do I size a chain for a SRAM eTap AXS 1x drivetrain? Rival AXS power meter section Are special chain tools, chain pliers, or chain whips required to work on Rival eTap AXS drivetrains? Are the front and rear derailleur batteries interchangeable? Comments 0 comments Please sign in to leave a comment.