Service your JKS J-Flex Control Arm on your Jeep Wrangler TJ, LJ or Grand Cherokee ZJ. Worn out control arm bushings causes clunking noises and sloppy handling. The JKS J-Flex Control Arm Rear Upper Service Pack for Jeep TJ, LJ, ZJ includes everything you need to rebuild 1 control arm. Easy to install and get everything you need with the JKS rebuild kits. This kit is to Rebuild 1 (ONE) Control Arm.