That is great information.I had this kit in my YX160. It worked well. And yes, both the fibers and metal plates are thinner than stock.
I recently went to a 212 kit on my Anima, and the clutch started slipping (23hp range now). I have confirmed myself that the YX clutch parts will dimensionally fit the inner and outer basket, but the clutch pack thickness is different. I am currently running a 7-disk bastard clutch pack with mostly the thinner fibers and disks of the kit mentioned above, with a few of the thicker plates from the stock Anima clutch to make the total pack thickness similar. This mod completely eliminated the hurky-jerky clutch release on the Anima. I have yet to find stiffer springs that work, the Anima clutch requires much longer springs than the YX160 did.
On the springs Tbolt lists a fiber/spring kit for ZS155 and Daytona Anima. Have you tried the springs from that kit? I never had a ZS155 variant but maybe it has longer springs like the Anima.
I can't confirm anything but it looks now like W-15-1704 would not fit/be the springs in the W-TRC-9385 fiber+spring kit if the ZS155 had longer springs like the Anima