SRAM XDR

12s road/gravel

An XD variant that is 1.85 mm wider, for road/gravel (10t cassettes, e.g. SRAM 12-speed AXS Flattop).

Notes

An XD cassette can fit on an XDR body with a 1.85 mm spacer (one way only). An XDR cassette will NOT fit on an XD body.

Compatible with

SRAM XDR 12-speed road cassettes
XD cassettes + 1.85 mm spacer

NOT compatible with

Shimano HG cassettes
Micro Spline cassettes

Questions about this standard

Depends Can I use an XD cassette on an XDR body (and vice versa)?

Source: SRAM / BikeGremlin. Indicative data — always check the manufacturer's official specs.