Control arms are one of the core components of a suspension system and serve as the direct connection points between the front wheel assemblies and the vehicle's frame.
The upper control arm connects to the uppermost area of the front wheel and the lower control arm connects to the lower most area of the front wheel, with both arms then attaching to the frame of the car
Control arms allow a driver to steer a car while also guiding the wheels up and down with the road surface.