Steering stabilizers are designed to restrain "bump steer" and front end vibration, giving added life to tires, ball joints, and other steering components.Easy bolt-on installation. Improves control and handling. Reduces bump steer. Reduces tie rod and ball joint wear and tear. Chrome hardened 18mm piston rodONLY fits 1980-1985 4wd F-350 models with TTB front end. This stabilizer kit is a stacked mount design. One stabilizer on top of the other.1-2 hourshttps://s3.amazonaws.com/roughcountry/install/82251.pdf1980-1996:4WD:Ford:Bronco;1980-1996:2WD:Ford:F-150;1980-1996:4WD:Ford:F-150;1980-1996:2WD:Ford:F-250;1980-1998:4WD:Ford:F-250;1980-1996:2WD:Ford:F-350;1980-1985:4WD:Ford:F-350