KevOWi stand corrected. It in fact does have the cherry stem, so it should work, except maybe the spacebar requires a little shaving work similar to novatouch.
I initially looked it up and a site just had a generic topre switch as a picture so I thought it did not have the cherry stem. My apologies.
EinTheVarianceto be fair, it's easy to assume there wouldn't be cherry mx stem compatibility. the thing has both Topre and Realforce in its name, and they never made a keyboard like that before.
KevOWLol it's not so much the keycaps, the issue I have is with the keyboard as I was looking at buying a new one since custom keys don't fit on the bottom row of my current keyboard (Corsair K70). The Realforce is quite expensive so gotta make sure it fits before purchasing.
vongas I mentioned on the above, depending on the stems on the spacebar, you might have to do some snipping/dremeling to get it to fit because of the outer circle stem. I bought a keycap set previously here for my novatouch and had to do that:
https://www.massdrop.com/buy/npkc-gradient-keycap-set/talk/492431
vongRealforce RGB is a bone stock 108 key layout with MX stems so you should be fine. It's the Topre models (87u and 104U etc.) that have the odd sized bottom row.