Fat bikes fit fine on your StageTwo hitch rack (or your StageTwo +2 add-on) when you add this Yakima StageTwo Fat-Tire Bike Kit. It includes 2 long wheel straps to accommodate fat bikes.
Features
Fits tires sizes up to 20 x 4.0 in., 26 x 5.0 in. and 27.5 x 4.5 in.