OME steering stabilizer
I installed an OME steering stabilizer years ago and am very impressed with it. If I recall correctly, it was larger than stock - whether or not that made the difference I don't know, but I was running stock wheels/tires with 1" lift and stiffer springs. Didn't get near the shimmy in the steering wheel when hitting bumps/pot holes/trail debris, etc. Price is reasonable to boot. I don't think you can go wrong.