Right, that's the query I was referring to.The same fitment question re cush drive compatibility (see below) was posted to the ESJOT product page and their response was it works. Nothing is certain until you try it, but you might send them a query and assuming they confirm its fit you'd think a return would be possible should it not work.
"Question: Hi, I am after a rear sprocket for my ducati Supersport 939 (2017)I haven't yet replaced the sprockets on a ducati and I'm aware they fit on differently. A lot of after market sprockets come with carriers or cush drives etc.I just want to confirm my existing OEM cushdrive etc. will be perfectly compatible with this sprocket and no extra parts will be required. Stock pitch is 520Thanks.
September / 25 / 2020
Answer: This sprocket is plug and play, fits the same way will fit the oem Ducati rear sprocket."
But that's in doubt.
This is an issue the the forum should solve, once and for all.