Rims for the Kavan 125mm balloon tires in Bushwheels style. The supplied screws as well as the center hubs can be used. No further parts necessary.
I printed the rims in Extrudr Greentec pro carbon. PETG, ASA, PC should also work for this.
Make sure that there is no support in the holes of the “Rim Front” :
Recommended print settings: