When you got your Thule T2 Pro XT rack a few years ago, carrying two bikes seemed like plenty, but after you picked up a better half and a quiver of bikes, things began to feel a bit cramped. Double the capacity of your T2 Pro XT with the 2 Bike Hitch Rack Add-On. Designed for use with 2-inch receiver hitches only, this add-on has all of the features you love about your original rack, including cable locks and a simple setup. Plus, it's compatible with past and present tire and wheel standards for MTB, so you won't have any sizing issues.