Stromberg Carlson LA-102B 2-Bike Ladder Rack

At just 7 lbs, this is the lightest RV bike rack available. It hooks onto your RV ladder and carries 2 bikes up to 50 lbs each. The trade-off is obvious: ladder-mount means less stability than hitch-mount, and 50 lbs per bike rules out most e-bikes. But for standard road or mountain bikes on a budget, it is a practical choice.