Accessories: Rear Lower Arm-2pcs Original Name / Part No: LOS214003 Part location: Rear lower arms area Does this product replace a specific part or function? yes Product major function & usage: Support the chassis and stabilize the front knuckle Is this part adjustable? If yes … how and why/purpose? How : Install the dampers through the positioning holes. Purpose : To adjust the angle of the dampers for different driving experience. Major advantages of upgrading to this product: 1. Aluminum 6061 T6 is a light material with high tensile strength and great durability during extreme RC action. Delrin collars are designed and hand-installed to eliminate the gap and friction in order to reach the best performance, in harmony with the rest of the vehicle. 2. Multiple positioning holes for users to adjust the angle of the dampers.