Original Name / Part No.: 8929Part location: Front or rear upper armsProduct major functions & usage: Support chassis, stabilize c-hubs (front or rear).Accessories:Upper Arms 2pcsStainless Steel Pin 4x33 2pcsStainless Steel Pin 4x43 2pcsStainless Steel Flat Head Screw 3x8 4pcsStainless Steel washer 3m 4pcsMajor advantages of upgrading to this part/product :1. Made with a quality light weight high tensile strength aluminum 6061 T6 for greater support and durability.2. Delrin collars are inserted to minimize the gap and strengthen the fitting for a smooth and stable drive.3. The screw fixing method has changed to fixing a pin and with small screw to avoid any damage by loose threads on screws.