I put on a..... OK. I don't know what they call 'em in Peddle-Bike land but it's a Centerstand. Holds the 820 upright when loading Boy into his throne or stuff onto the rack or into the panniers. Couldn't live my life without it. The Marathon has a one-sider. The UO-8 has a switch-blade style centerstand on it. The Tricross and Dimaondback don't need them as when they are out of the barn they are under my but!