I have this model RC buggy:

It's called an X-Terminator.1/8th scale, 4WD, nitro powered and
pretty fast. I don't use it in the dirt very often as it gets too
dirty. I put a lil larger pinion gear for more top speed.
The only problems I've had with it are the pull-starter breaks
fairly easily, and my nephew crashed it into the curb breaking a
front suspension piece. I replaced that broken glass filled nylon
part with aluminum parts on all four corners.