Racer X max brake rotor size?

I'm about to list a 2006 Racer X (complete bike) for sale (excellent condition! Make me an offer!) Instead of the BB7's that it has right now, I'm planning on putting a set of Magura Louise brakes on it (better modulation at about the same weight.)

Anybody know if the Racer X will work with a 180mm rear rotor? Eyeballing it, it looks like it will fit.