Jeep Front Truss Coil Buckets W/Shock Mounts And Factory Track Bar Mount Jeep XJ/TJ/LJ/ZJ TNT Customs. TNT Customs front truss coil mounts are CNC cut and precision formed out of 3/16th steel. These mounts will allow you to retain the factory location for your trackbar on your truss. Because of the slot in the coil mount, you have some adjustablity in the location of the spring. They have been designed to give you up to 1.5 inch of adjustability in the coil location. If you need more stretch for your front axle, choose the related product FTCBStr instead.