The difference is the direction (type) of
fold. Both can be used on either a 1-1/4” or 2” receiver hitch.
a. On an HR200 Trail Rider the wheel/tire
holder support arms fold up (vertically when the rack is not being used). The
HR200 cannot fold horizontally.
b. On an HR1000Y the whole rack folds up
horizontally (against the vehicle) or down horizontally to access the luggage
compartment of the vehicle.