RockJock's Johnny Joint® front upper control arms for the 1997-2006 Jeep TJ Wrangler and LJ Unlimited, as well as all years of XJ Cherokee and MJ Comanche vehicles provides length adjustability allowing pinion angle and caster angle to be adjusted. 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. Arms are made from 1" x .156" wall D.O.M. tubing, feature a Johnny Joint® at the frame end and a fork at the housing end, are powder coated semi-gloss black, and include zerk fitted grade 8 mounting bolts. You can replace the stock front differential housing bushings with our CE-9102K Johnny Joint® front end housing conversion kit to add Johnny Joints to that point also!