If it was 11 speed I could be definitive, but 13 speed is devils work.
Agreed. That Rotor cassette would have been made for Ekar which uses a narrower chain than the flattop SRAM one.
It would probably work but not well.
Stuff like this just reinforces my desire to stick with 11 speed and the lovely cross compatibility.
@SRAMbo started
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If it was 11 speed I could be definitive, but 13 speed is devils work.