Maisto R/C Rock Crawler replacement front axle. These tend to break on these child friendly entry level radio control trucks. This will cheaply get your truck back on the road. See the YouTube video below on how to replace it.
1-31-18 update: I have installed and tested this part in my own Rock Crawler. It works great.
Need other replacement parts? Just ask: reversed designed parts, redesigned/improved broken parts, custom rims, lengthened A arms, custom mounts.
Check out the video for an installation guide.