Will additional cassette size options be added later? August 09, 2021 21:57 Updated SRAM is always working on new product designs but does not comment on products that may be in development. Related articles Can I use my eTap AXS 36T Max rear derailleur with the 10-44T XPLR cassette? What is the tooth count of the XPLR 12-speed 10-44T cassettes? What driver bodies are compatible with XPLR XG-1271 and XG-1251 cassettes? What is the difference between the XG-1271 and XG-1251 10-44T cassettes? Do the 1x cranksets with direct mount chainrings have a power meter option? Comments 0 comments Article is closed for comments.