Front upper and lower control arm mounts are located in this area. Like most Jeep Wranglers, the boxed frame on the TJ allows dirt and moisture to collect inside the frame, allowing it to rust from the inside out. This creates an unsafe condition. Our Safe-T-Cap Frame Repair Kit is manufactured from 11 gauge steel. CAD designed, precision CNC cut, bent and JIG welded.Includes lower control arm mount with new hardware. Upper trail arm mount is NOT included on this kit. Frame repair kit is notched to fit around the motor mount. Select from left side, right side or both.