What is the tooth count of the XPLR 12-speed 10-44T cassettes? August 09, 2021 21:56 Updated The cog sizes are 10, 11, 13, 15, 17, 19, 21, 24, 28, 32, 38, 44T. The steps between cogs are tuned for 1x drop bar riding. Related articles What size cassettes work with the XPLR rear derailleur? Can I use my eTap AXS 36T Max rear derailleur with the 10-44T XPLR cassette? Will additional cassette size options be added later? Is there an eTap AXS cassette available that is compatible with 11-speed Hyperglide driver bodies?” What is the difference between the XG-1271 and XG-1251 10-44T cassettes? Comments 0 comments Article is closed for comments.