RockJock® offers optional machined lightweight aluminum arms for Antirock® sway bar kits for the hardcore rock crawling crowd, when looking for that little bit of weight, or a Jeeper looking for something trick! These 20" long arms are machined out of 6061T6 3/4" thick aluminum and are bent for applications that require some extra clearance for suspension components. Arms weigh just 1.5 pounds 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. NOTES: measurement is complete overall length of the piece, end to end. 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!