Product Weight (Set): N/A. Our Toyota 4Runner Lower Trailing Arm Skid Plate Kit is finished in wrinkled black powder coat, and TIG welded with 3/16-inch high-strength steel to ensure durability, providing protection to the OEM lower trailing arm mounts. Our Lower Trailing Arm Skid Plate Kit is designed to be installed without the need to unbolt the lower trailing arm itself, making this an easy bolt-on solution.