Adustable Control Arms Front Lower 1999-2004 Jeep Grand Cherokee WJ JKS ManufacturingYour Jeep Grand Cherokee WJ will benefit from new 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 inch 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