Quote from: delarune on October 05, 2026, 04:11:40 AMYes I have a sram xplr 13s cassette on my road bike. Really it is not compatible because the cassette is to wide. You need to have a udh compatible frame and a sram xplr rear derailleur to make it work with the wider cassette. My simple solution was to put a 2mm washer between frame and cassette. Its tight but works like a charm

so you saying, that even with a udh frame you cant run this derailleur without the "washer"?