Does anybody know if this kit comes with a rear trackbar? I don't see it listed in the item contents but I swear I see a front and rear trackbar in this picture.

Beyond shocks and bumpstops is there anything else that is required to make this lift complete (i.e. Front LCA's) for reasonable driveability on a JKU?

 

It shows in the picture that both are included. I'd give them a call before ordering it to confirm, just to be safe.

 

All the Rock Krawler lifts that I am aware of utilize a rear track bar relocation bracket. Rock Krawler is a sponsor on the forum and you can PM them to ask the questions.

You may want to look at their sets that include the lower control arms.