XD | XDR – SRAM Technical Service FAQ

Do I need an XD or XDR driver to use an XD compatible cassette?

Yes. XD drivers require XD cassettes. With an XDR driver you can install an XD cassette if you install a 1.85mm spacer behind it. See more

Where do I get an XD or XDR driver for my wheel?

Most wheel manufacturers make an XD or XDR driver they can sell you to covert your wheel. Please check with the hub manufacturer to see if they have an XD or XDR driver kit for your existing rear h... See more

Why did SRAM create the XD driver body interface?

To accommodate wider range cassettes that use a 10-tooth cog for the lightest possible package. The 10-tooth cog is too small to fit on a traditional freehub body, like an 11-tooth cog can. The XD ... See more

Why did SRAM create the XDR driver body interface?

XDR is slightly longer than XD to accommodate preexisting road wheels with longer HG spline driver bodies created for 11-speed road cassettes. This was to make it easier for our 85+ hub partners to... See more

What are the main benefits of the XD and XDR interfaces?

Both interfaces allow for a 10-tooth start cassette in a way that allows for the strongest hub, the lightest cassette and derailleur (because a larger cassette means a larger derailleur) and optima... See more

What is the difference between XD and XDR driver bodies?

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. See more

Are XD and XDR open standards?

Yes. We’ve never charged for anyone to use this standard. We also provide detailed drawings and instructions for how to manufacture XD and XDR drivers. We do this because we want to ensure a proper... See more

How do I obtain a license to design or manufacture XD or XDR compatible hubs?

Go to www.xddriverbody.com and fill out a request. It usually takes about 2 weeks. See more

Do XD or XDR equipped wheels require special frame rear dropout designs?

No. It is compatible all existing frame dropout width and interface standards including both quick release and thru-axle designs. See more

Do SRAM XD cassettes require different installation tools than traditional cassettes?

No. XD cassettes can be installed with a standard HG-style tool with a 7-8mm spline depth. See more

Will my hub work with your XD driver for the XG 10-42 0r 10-50 cassettes?

To verify if your hub is XD driver compatible, contact your hub manufacturer to verify if they produce a compatible XD driver for your specific hub. The SRAM version XD drivers are compatible with ... See more