This system includes :Front Kncukle Arm-2PCSC-Hubs-2PCSRear Knuckle Arm-2PCSFront Lower Arm-2PCSRear Lower Arm-2PCSStainless metal Round Head Screw 3x20-6PCSStainless steel Flat Head Screw 3x6-4PCSStainless steel washer 3m-4PCSStainless steel Round Head Screw 3x16-4PCSOriginal name / component No:AR330519+AR330523+AR330522+AR330520+AR3305211. Front c-hubs: help knuckle hands to make efficiently.2. Front knuckle fingers: Assist steering.3. Back knuckle arms: Stabilize CVD drive shaft and bearing.4.Support the framework and offer the front&rear knuckleMajor benefits of upgrading towards part/product :1. Produced from a great lightweight high tensile power aluminum 6061 T6 for greater durability.2. Delrin collars are placed to attenuate the region and friction so the steering performance is premier.3. Knuckle hands: Delrin collars are put to attenuate the space and bolster the fitting for a smooth and stable drive.4. Exquisite 3D improve generated by CNC item to exhibit contemporary and metallic look.5. Numerous positioning holes for users to alter the angle of dampers.