Furlock Bones said:
This comes up here every once in awhile. It comes up regularly on Jeep forums and groups.
First thing is first. Check that all front suspension parts are torqued to spec. Then mark them with a paint pen so you can visually check going forward.
Then lift the front enough to get a pry bar under the front wheels. Lift up and down. Check for movement at the ball joints.
Tires rotated and balanced.
Check front shocks.
Steering stabilizers do not fix death wobble. They cover it up.
Don't forget the wheel alignment & balanced tire pressure, especially in front.
For the OP, Jeeps are great until you start messing with the suspension and lift. If your installer doesn't know what they're doing, it can get ugly fast. '06 TJUR & '19 JLUR. I went Rubi because the common mods are done by the factory.