I have a great option for you, but I do not have a swing away option that can support that much weight. The Lets Go Aero V-Lectric FAT PRO Bike Rack for 2 Electric Bikes # LGA77FR is going to be the best option for you. This rack is rated to be used on your Winnebago Era with a 2" hitch. This rack has one of the highest weight capacities at 75 lbs. per bike and can handle wheels up to 4.5". This rack does not have a swing away function but it does feature a slide-out function, allowing... view full answer...