SuperPro Front Roll Center & Bump Steer Correction Kit Subaru Forester, Impreza, Outback, WRX STI, LegacySuperPro Roll Centre Adjusting Ball Joints will optimise your cars performance! Reduces roll bump steer essential for lowered cars Reduced abrasion, temperature resistance and harshness Enhances your vehicles handling and performance Designed, engineered and manufactured in Australia A must for lowered vehicles, SuperPro roll center and bump steer correction kits are designed to correct roll centre geometry using specially engineered ball joints and