RC10T RC trucks

I have three RC10T trucks. They are hopped up and run fast. But they
all blow out the rear axle bearings quite often. I buy them by the 10
pack. The other bearings in the truck last a long time. Does anyone
know where to get a lager rear hub carrier to accomidate a larger
bearing? I saw a set somewhere years ago, but can't seem to find them
know.  Thanks for your time, Robert