So ya this thing rules, it can flex better then my Jeep. it has a locking diffs, and each axel has a switch for High and Low gears. in High it moves but cant get out of its own way, but also cant climb so realy not sure why there is a high gear, in Low its reall SLOW but man can it climb, it climb over some big shit in my yard.
Some pics:
the bigger one (the 1:6) one has shift on the fly, there is a button on the remote controller to switch from Hi to Low so thats awsome. but i couldnt afford it, so i got the 1:18, which i love. The 1:18 has a switch on each axel for Hi and Low so you have to pick it up and change it yourself.