Dr.Tray is the ultimate tray rack for your hitch. It can easily handle road, mountain, and fat-tire bikes with up to 4.8” tires. Bike clearance is top notch, with 18” between the trays. To make it even better, the bike tray spacing can be adjusted tool-free while the bikes are loaded, virtually eliminating any issues with bike-to-bike interference. *Holds up to two bikes.