I don't think there will be a problem with the ZTTO cassette coming apart
The rivets you see in the screen shot only hold the 46 tooth gear onto the solid main body.
And there are 16 rivets total
On SRAM XX1 one piece cassettes, the largest cog is only pressed onto some small pins
I have pried off the largest cog on my XX1 cassettes in order to clean the inside of the cassette.
Then just pressed the big cog back on to the main body
No problems with that system after many years of riding
It's probably time for me to take the ZITTO cassette off and clean it thoroughly
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