2 Bike XC Rac - For 1-1/4" Receiver The Cross Country XC 2-Bike Rail Rack can accommodate any type of bike frame designs, without removing the wheels. The XC slides into a 2 receiver and carries up to 2 bikes, with an option to carry up to 4 bikes with another module (4 bikes on Class III hitch only). The XC adjusts to different frame sizes with the simple movement of the wheel hoops. Frame grip arms have a soft coating to protect your bikes finish. When not in use, the rack folds up for easy storage (on or off vehicle). The XC carries the widest variety of bike frames in its class.