No ride or trail is exactly alike, so when you need to expand the capacity of your Saris MTR hitch rack, grab the Saris MTR 2 Bike Add-On. It's compatible with both the 1-bike and 2-bike MTR hitch rack models and lets you haul more bikes to fit the day's adventure, and maybe bring some friends along for the ride. The 2-bike Add-On is made from the same rugged, American-made aluminum and steel, which are tested to outlive the elements so you can enjoy many seasons of use.