Originally Posted by
Rodrider88
Sure, but I guess I need to change the cups in that case?
im wondering if the cartridge bearings from a threadless headset can work with a standard 1” threaded
Perhaps they will fit if you are lucky but you probably can't buy just the cups for a threaded headset. You are going to have to buy the entire thing and it will come with both bearings and a new crown race.