Left and Right Arms for Standard Replacement and Repair Upgrade The SuperPro front lower control arm kit has been designed to be an easy repair solution. Offering both alignment and vehicle handling improvements. Designed not just as a repair solution but as an upgrade! Supplied as a complete kit and fully assembled with special uprated ball joints and proprietary SuperPro bushings. These arms utilise the SuperPro bushings and are manufactured from a high strength material. By eliminating the O.E style rubber bushing, these arms have been optimised for longevity, durability and performance, without any unwanted NVH. SuperPro Control Arms are perfectly suited as a standard replacement and are an upgrade from the factory arms, eliminating the undesirable arm movement to maintain better steering geometry in all driving conditions. SuperPro Tip - SuperPro strongly advises that both arms should always be replaced at the same time to maintain the correct geometry and operation of the vehicle.