I have bought several replacement wheel bearings, from yok, but that is about it. If I were to replace them, I'd go to
www.rcboyz.com They seem to have very decent pricing, and apparently, the pricing isn't bad either.
Will be racing the yok again on carpet tomorrow. Had it set up great with 139G's, but I'm going to try it with sorex tomorrow. I found that heavy swaybars and stiff springs all around (low roll) works best.
Speedo