RockJock's complete set of 8 Johnny Joint® control arms for the 1997-2006 Jeep TJ Wrangler and LJ Unlimited vehicles provides length adjustability on all 8 arms, allowing the pinion angle and caster angle to be adjusted. Addtionally, the rear upper control arms feature double adjustment cababilities allowing length adjustments to the arms to be made with the arms still attached to the vehicle. The adjustable feature of our arms allows your vehicle to be upgraded to different lift amounts without having to replace the control arms in the future. All arms are made from 1" x .156" wall D.O.M. tubing, are powder coated semi-gloss black, and come with zerk fitted grade 8 mounting bolts. To allow complete unrestricted movement, the Johnny Joint® is used at both ends of all 4 of the rear arms, both ends of the front lowers, and on one end of the front upper arms. You can replace these stock front end bushings with our CE-9102K Johnny Joint® front end housing conversion kit. NOTE: Some stock frontend housings feature 10mm upper control arm bolts, where others are already 7/16". If your frontend housing features the 10mm, you will have to drill these holes out to 7/16".