Well, buying parts without paying attention can lead to great discovery, we thought we were buying RC4WD Portal axles but NOPE, they turned out to be RCAWD. Imposters but actually, these axles are great, well priced at £50 ish an axle. They do need greasing but other than that, throw the outer bearings in and they are ready to rip.
Being stuck on a ship I had to scrape together parts for a little test track, we will however try and give this truck a rip in the great outdoors ASAP.
Axles available singularly from Amazon