Our Stage 1 Adjustable Lower Short arms are designed to be budget friendly. For those looking to improve the articulation and ride of their Jeeps while not breaking the bank. These arms feature heim joints at the frame (unibody) side and poly bushings at the axle end. The poly bushings help soak up vibrations and impacts from the road while the heim joints allow increased articulation through the suspension cycle. Direct bolt on for your ZJ, simply remove your old arms, and install these!