Do I need to install a spacer between the 10-44T cassette and the XDR driver body? August 09, 2021 22:00 Updated No, do not use a spacer with the 10-44T cassette. The 12-speed 10-44T cassette is designed specifically for the XDR driver. Related articles Our SRAM RED, Force, and Rival 12-speed cranksets are compatible with the following frame bottom bracket interfaces when used with the appropriate SRAM DUB bottom bracket and spacers: Can I use my existing eTap AXS 1x crankset with the XPLR rear derailleur and 10-44T cassette? How long can I ride before I need to charge my derailleur battery? Can I use an Eagle chain with the XPLR direct mount chainring? Can I use an Eagle derailleur with the 12-speed 10-44T cassette? Comments 0 comments Article is closed for comments.