Upgrade your JK Wrangler's off-road capability with JKS J-Flex adjustable front upper Control Arms. CNC-bent from DOM tubing for proper tire, frame and axle mount clearance, J-Flex control arms feature forged "flex" ends that are adjustable. The design increases reliability and allows you to fine tune suspension geometry. The ends are also fully rebuildable and greaseable. With heavy duty 1/4"-12 threads and hex shaped weld-in threaded bung, tightening of the included jam nuts is super easy and secure. At the non-adjustable end, the mount is "boxed" for increased strength. Arms are powder-coated for a long-lasting finish. Sold in pairs.