Originally Posted by
Kontact
The Oneup listing says that it is only for the M7000 or M8000 11-42 cassettes, not all Shimano cassettes.
True, for formatting reason you can only extend with 11-40 or 11-42 cassettes. I was wishing to know if I could eventually extended a Sunshine 11-42 cassette to 50T cassette. I'll have the cassette in my hand tomorrow, but I know the formatting is the same as the Shimano 11-42.