J-Ride is nothing more than a marketing gimmick from what I can tell. It's normal Ford stuff, balanced drive shaft, sway bars, plastic jounce bumpers, etc. Just like any Ford F53.
I might add none of it works very well or we wouldn't be adding improved shocks, Sumo springs, rear trac bars, steering stabilizers, etc.
Here's a video explaining from Jayco.
https://www.jayco.com/products/class...pt/jride-plus/
The air brakes and cushions mentioned are only on the diesel pushers
Mark