Major advantages of upgrading to this part/product : 1. Made with a quality light weight high tensile strength aluminum 6061 T6 for greater durability. 2. Delrin collars are inserted to minimize the gap and friction so that the steering performance is top rated. 3. C-hubs: Stainless steel king pins provided to prevent rustiness and stabilize the smooth rotation. 4. Knuckle arms: Delrin collars are inserted to minimize the gap and strengthen the fitting for a smooth and stable drive. 5. Exquisite 3D streamline made by CNC machine to show modern and metallic appearance.