On top of it as well as classic anti-hectare converted rod

In fact, "balancing pole" is a commonly known. I think the so-called balance bar, referring to two things: the top bar (Tie Bar) and anti-roll bars (Anti-Sway Bar). Generally converted stores on both sides of the connector body to enhance body stiffness shock tower with the "top bar" called balancing pole.
Now cars are unibody structure, no real sense of the chassis. Support force and twisting forces produced four wheels borne by the entire body. Due to the complex shape of the body, so the suspension system when a great force is applied to the body, the body must have a certain degree of flexibility can produce some distortions, to disperse and to withstand large forces,Con rods in order to prevent the vehicle body breakage.

Ordinary car, no depth suspension modifications, it is not necessary to install the "top bar" in. Because the original springs are generally quite soft, so the wheels to give the body a variety of forces through spring "resolve" a part of the body after it is passed to. The body does not need to have a huge distortions to distract and resist the forces generated by the wheels.
The modifications to the vehicle suspension system, such as the replacement of the hard drive and short springs or the installation of a crude anti-roll bars, the intense driving when the wheel support force can not be completely or very large amount of suspension system "resolve." This time, it depends on the deformation of the body to withstand the force of the wheels to pass.performance connecting rods But in the process of intense driving body deformation causes misregistration suspension system, you need to "top bar" to reinforce the body, to prevent excessive deformation of the body.