Steering Stabilizer Dual Kit Silver Front For Ford F-250 Super Duty 05-17 4WD. Rancho dual steering damper is a complete kit with two Rancho steering stabilizers and brackets that are required for installation. The steering stabilizers reduce the tire wobble of trucks and SUVs with oversized tires, and ends the common vibration problem caused by larger tires. Dual Steering Dampers;Use with Rancho RS66552B, RS66553B System(s);Requires at least 2 (in) tall front bump stop spacers;Requires at least a 2 (in) suspension lift to use. WARNING : This product can expose you to chemicals including Styrene, which is known to the State of California to cause cancer.