RockJock(R) offers forged chromoly arms for Antirock(R) sway bar kits as an upgrade to existing vehicles or for those looking for maximum strength for their rock crawling rig! These arms provide maximum strength and rigidity via their forged 4340 chromoly construction and I-beam cross section design. Arms are 3/4 in. thick and 15.2 in. in length, center to center. Sold as a pair only. These arms would be the replacement pieces for Jeep JL rear Antirock arms.