How do I size a chain for a 2x SRAM eTap AXS drivetrain? November 04, 2020 20:05 Updated Chainring and big cog + one inner and one outer link. Related articles How do I size a chain for a 1x SRAM eTap AXS drivetrain? Is a special chain tool required for new RED and Force eTap AXS™ road chains? How do I size a chain for a 1x SRAM Eagle AXS™ drivetrain? Where can I order a front derailleur alignment tool to help setup my SRAM eTap AXS? Just got a new crank and it came with some spacers. How do I know where they go, and how do I install my new crankset? Comments 0 comments Article is closed for comments.