125-200cc WTB 2002 Cr250 Front Rim

Looking for a front rim assembly for a cr250. Needs to be for the bigger 25mm axle.

Not sure what the diameter of the axle has to do with the rim. As far as I know, providing you have the correct diameter (rim ie 21") , width and number of spoke holes ( to match your hub) it doesn't matter what rim you use.

Bought an 01 Wr250 front rim that was listed to fit my bike but ut didn't because I discovered the axles are different. So as a result the bearings were much smaller

here's a suggestion
look uo the front wheel bearing part number on a fiche and see what other years it fits
I put on 04 forks on my 99 and used that method to find the wheel I needed

I do swap front wheels from my 07 TE450 to my 02 WR360 all the time. Same size.

Ok, I think you mean "wheel", this only makes sense if I put the word "wheel" where you are using the word "rim".