Have RV Questions? Ask an RV Mechanic Online.
The weight distrubion hitch doesn't help on the towing capacity, only the tongue weight. Other than than, you just need to stay within the specs of the hitch and capacity of the 4 Runner. Hope that helps on this. Please get back to me if you need more as all follow ups are included in our fee.
Did you get all you needed here on this in order to make a decision or is there something more I can provide?