ProRac Systems RVPB-020-1 Tent Trailer Proformance Bike Rack - 2-Bike Carrier

Quality product, as I expected from the price. It's sent with mounts for 4 bikes. I like it because it avoids putting any screws any into the top of my old popup, which the racks that mount on top of popup would have required. You can also get a split trailer hitch that splits and has two receivers, one for the trailer, but that extends the hitch length a couple inches, and adds more to the tongue weight than this setup does, and would interfere with opening the back hatch of my car. I only gave it 4 stars because it does take a bit of time to set it up the first time, and it's not the simplest setup (front wheels have to come off, and each bike is strapped down with two straps), and it's a bit pricey, but it seemed like the best option for me, and I'm happy with the quality of the product.