weight dist chain replacement

Don't know if they are special or not, but I would think a grade 70 chain in the size need would do, a 5/16" grade 70 chain has a working load limit of 4700#

Take one off and take it to the home center, get the same size, it's probably 5/16". Pro tip: Get galvanized chains, they will stay looking nicer longer.

Or go to a marine supply and get stainless chain. It will always look good.

Curious, why are you replacing them?

i think i have to much lift and i am at the end of the link
so i am going to get some with a couple of links longer to see if that makes a difference

All you need do is tilt the hitch head forward towards the tow vehicle and that will lift the bars higher to begin with so you don't need as many chain lengths to lift them and/or will reduce the amount of lift with the same chain link used.

You must not be transferring much, if any weight forward now if you are at the end of the chain. The Dual Cam requires some pressure on the cam/bar interface for the system to work correctly. I frankly have never heard of anyone running out of chain links in order to properly tune their hitch setup. Why do you think you have too much lift?
Barney

Yes, adjust the head angle. The chains don't wear out and I would feel better with the chains that Reese supplies.Remember, the bars should be some what parallel to the frame when set up.