open_circuit previously posted:
"It's worth looking into. It also may be unnecessary with the JKS upper control arms. These arms have a spherical joint on the frame side, which allows some twisting when flexing the suspension. The stock bars only have rubber bushings in this location, so they must travel in a vertical plane. Any twist on the stock uppers would be absorbed in the body of the component.
I'll have to research the bump stops and see if they need to be adjusted, or if the replacement uppers can eliminate that from the list of concerns."
I replaced mine when I lifted my jk. Replaced is not quite correct. I left my stock ones in and added a hockey puck which I adhered with contact cement to point where the stock stop hits near the axle.
I can post a pic if interested.