If you got your hands on a shiny new Atrix 2 last week and you're feeling a bit adventureous, XDA forum member Jimmy273 has compiled a pretty straightforward manual root method to achieve coveted superuser access.Jimmy273 makes it very clear that he cannot take full credit, as he simply translated the root method for the Bionic originally created by p3droid
over at the MyDroidWorld forums. Full instructions and all the
necessary files are available at the source link, as is the file for the
one-click method, which is said to work just fine.
Source: XDA Forums