Bad front right axle?

How is it going everyone? My 2000 Honda Foreman 450S makes a small clicking(popping) sound when I turn hard right at low speed. Is this meaning I need to replace the front right side axle? Right side if your sitting on the seat.

I don’t hear it if i’m turning left just when I turn right. I’m assuming you cant replace the u-joints? I don’t know to be honest.

Also should I replace both axles at the same time or would I be ok just to do the popping side? Thanks for your help.