yes ours to ! we live close by so I had to ask !
besides the fact that you have to haul and store that big and bulky king pin stabilizer it really has very little affect on the movement in the trailer and there WILL be movement !
i mad my own stabilizers out of cargo bar locks for a semi trailer . you can buy them all ready done as well.
heres a few pics of mine installed and they work great by the way .
others on here also have there versions of this .