No

Can I fit a SRAM XDR cassette on an XD driver?

No. The XDR driver is 1.85 mm longer than the XD driver (SRAM's official figure): an XDR cassette (road) is built for that extra 1.85 mm, so on a shorter XD driver it overhangs and can't be tightened properly. For an XDR cassette you need an XDR driver. Note: the reverse does work — an XD cassette fits on an XDR driver by adding a 1.85 mm spacer (see the dedicated rule).

Standards involved

What you need — before you buy

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