This process includes :ront Lower Arm-2PCSRear Lower Arm-2PCSStainless steel Round Head Screw 3x16-4PCSOriginal name / role No:AR330520+AR330521Support the framework and provide the front&rear knuckleMajor features of updating as a result part/product :1. Aluminum 6061 T6 item designed for better power, limitation and many more elastic. The delrin collars are put toward hands to cut back the play and fortify the fitting.2.Compare towards initial design, these items has a fashionable hollow design.3. Many placement holes for users to change the angle linked to dampers.