JKS Manufacturing 18-21 Jeep Wrangler JL Adjustable J-Flex Lower Control Arms - FrontYour Jeep Wrangler JL and Gladiator JT will benefit from JKS J Flex adjustable front lower control arms. They adjust for proper geometry while increasing driving comfort on the road. J Flex arms are built from heavy duty 2 OD x . 250 wall DOM tubing and CNC bent for additional clearance. At the axle mount, J Flex arms feature premium OE style rubber bushings to absorb noise and reduce vibrations for a comfortable, quiet ride and maintenance free