I bought my 98 XJ with this lift installed. The PO had no idea who makes it. The control arm pivots are mounted lower than stock and the control arms swivel.
Help identifying it would be greatly appreciated.
Looks to me like Rubicon Express control arm drop brackets and a set of JKS upper and lower control arms. Can't help with anything else based on this picture besides also having extended steel-braided brake lines.
Another vote for Rocky Road being the source of the drops.
No idea about the arms themselves. Are those grease fittings on the arms?
The shafts of the arm rotate, that is what the fittings are for. Supposed to aid articulation and prevent joints from binding. But unless there is a rubber connection inside the arms, that movement will be undamped.