Jeep Front Truss Coil Bucket Stretch Jeep XJ/TJ/LJ/MJ TNT Customs. These front truss coil mounts with shock mounts are the option to choose when you want to use the over the knuckle or the crossover/hysteer trackbar mounts. With the stretch coil mounts, you are able to move your front axle forward up to 3 inches. These mounts come fully welded to the front truss when ordered with the truss. CNC cut from 3/16th steel and precision formed for perfect fit.