Circuit Sports traction rods give you the ability to adjust and tune your Z33/G35 rear suspension geometry. High quality pillow ball ends are used to replace stock rubber bushings for more direct and predictable feel. The length on these arms are fully adjustable to your specs for your Z33/G35. With the right adjustments, you can change the position and pitch of which the suspension rotates on, along with the amounts of "anti-squat" of the rear.