SuperPro TRC0005 Roll Center Correcting Ball Joint & Tie Rod End KitSuperPro TRC0005 Roll Center Correcting Ball Joint & Tie Rod End Kit SuperPro's Evo VIII, IX and X Roll Center Correction kit restores roll center geometry in lowered vehicles. Ideal for vehicles lowered 1" (25mm) the upgraded ball joints and tie rod ends optimize the vehicle's roll center geometry to reduce exaggerated body roll from an elevated roll center when vehicles are lowered. This makes for significantly improved transitions, corner entry and