I also put Roadmaster anti-sway bars front and rear on our 2016 Miramar.
Yes, along with several other suspension upgrades, they made a big difference in the handling quality.
Recently I’ve heard and felt a vague popping when making a tight turn and over uneven pavement, and the handling’s seemed a tad less precise.
I took our rig to a shop to give it a good look over before our big outing to the west coast, and mentioned the popping.
The mechanic said he thought he might have found the problem and showed me these.
The two shackles holding the OEM rear anti-sway bar had snapped apart: Most of one was missing.
FYI the Roadmaster rear bar doesn’t replace the OEM, but supplements it. Replacement shackles are on order.