RockJock® offers optional machined lightweight billet aluminum arms for Antirock® sway bar kits for the hardcore rock crawling crowd. These 20″ long arms are machined out of 6061T6 3/4″ thick aluminum and weigh just 1.5 pounds! This compared to the 3.5 pound weight of the standard steel arms. The aluminum arms feature the same 5 adjustable link mounting holes that the steel arms feature. Price is for a pair of aluminum Antirock® arms. If you are upgrading a vehicle that is equipped with an Antirock® sway bar with steel arms, you’ll need the 1/2″-20 thin nylock nuts shown below to reattach the heim joints to the arms!