What is the difference between XD and XDR driver bodies? November 12, 2018 20:44 Updated XDR is 1.85mm longer than the XD. If you have an XDR driver body, you can make it XD compatible by adding a 1.85mm spacer. Related articles Do I need an XD or XDR driver to use an XD compatible cassette? Will my hub work with your XD driver for the XG 10-42 0r 10-50 cassettes? What are the main benefits of the XD and XDR interfaces? Are XD and XDR open standards? Is a special cassette tool required to install or remove SRAM RED and Force eTap AXS™ road cassettes? Comments 0 comments Article is closed for comments.