Synergy Jeep JK/JL Adjustable Rear Upper Control Arms Details: Arms are bent similar to factory arm specs to clear OEM wheels with larger tires Made from high quality crush resistant 1 3/4X.188 Wall 1026 DOM tubing Features Synergy Dual Durometer Bushings (DDB) with Teflon bearing surface for a maintenance free design focusing on performance, flex, longevity, and ride quality Synergy Double Adjuster Sleeve Pinch Bolt Assembly: allows for adjustment of control arm length without removing control arm mounting bolt Suspension components feature an abrasive resistant Powdercoat finish for maximum durability and corrosion resistance 100 percent bolt on components assures an easy, trouble free installation with the use of basic hand tools Sold in pairs Min/Max Lengths: 17-3/8 inches to 18-7/8 inches Note: Requires maximum 4-3/4 inch Backspace Wheel or Wheel Spacer with Factory Wheel Setup