OEM suspension components are a compromise when it comes to low weight, low cost and high performance desires. Unfortunately that means using as little material as possible through computer aided design that usually ends up with an adequate outcome. The factory control arm support bracket does the job of supporting the control arm anchor bolt, but it also moves around somewhat when working which can result in caster and camber angles changes. The Whiteline support braces are designed to increase load resistance resulting in less flex and truer suspension alignment when pushing your car to the limits.