Adjustable arm with Japanese three peice bearing to replace standard arm and bushes. Allows adjustment of geometry change under load Needed if running wider track High quality bearings and materials make a noticeable difference to performance driving Driftworks adjustable traction rods replace the standard non adjustable Nissan arm. Adjusting this arm's length decides how much toe is given to the rear wheel under suspension compression and allows you to widen the track without compromising the geometry changes under load. They also eliminate another of the unwanted standard rubber bushes from the rear suspension setup, and any potential flex in the standard arm, contributing towards that perfect handling car. All of our suspension products are designed and tested for rigorous use. They are made to our own exacting specifications, using high load Japanese three piece bearings, and strong welds. Do not confuse these products with cheap imitations that use dangerous bearings, poor quality materials and insufficient welding. *Lifetime warranty is applicable on mechanical arm failure only, not finish or bearings. Original owner with proof of purchase.