JK Upper Control Arm Rear Arm Frame Side Joint 07-18 Wrangler JK/JKU Synergy MFG. Synergy Dual Durometer Bushings (DDB) in forged housings have all the benefits of our Dual Durometer Bushings in a forged housing package. These are available for all Synergy products that use a Johnny Joint or rod end. See table for applications and specs. May be compatible with other products.
Features:

• Dual Durometer Bushings (DDB) feature a maintenance free, grease less design
• Housings are forged from high strength 1045 steel and treated for corrosion resistance
• Control arm bushings are self centering with 30 degrees of misalignment
• Outer soft durometer acts as bushing cushion and flex material
• Inner hard durometer lining acts as the bearing surface to allow free floating inner sleeve to rotate.
• Provides for a maintenance free zero bind bushing
• Internal bushing ring separates inner and outer materials to prevent inner sleeve gaping at extreme flex
• Direct replacement available for Synergy products using a Johnny Joint or rod end
• Available complete with bushing installed