Used Allen hitch mounted bike rack for two bikes. Fits 1 1/4" hitches. 2 bikes can be suspended off this. Rusty but works fine. $35
Used Saris Freedom bike rack for two bikes. Fits 1 1/4" hitches. 2 bikes sit on the trays. $60.
I have an adapter for one of them. $10.
Call or text Marc at 617-448-6829. Pickup in Rivertown.