Question about NZXT Kraken X52 inkl. AM4

You can. The Aer P fans that are mounted here, however, are specially developed for liquid cooling with a static pressure and air flow almost twice as high as the Riing Plus. Unfortunately, I cannot judge whether this still cools equally well in the end. From the specifications, I would guess no.

Here are the fans installed in the Kraken X52: https://www.nzxt.com/products...
In comparison, the Riing Plus 12: http://de.thermaltake.com/products-m...