2005-2020 Ford F-250 Super Duty (Front) (Drive: 4WD / Qualifier: Dual Steering Dampers, Requires at least 2.0 (in) tall front bump stop spacers, Requires at least a 2.0 (in) suspension lift to use., Must Use with Steering Damper(s) RS5405, RS77405); 2005-2020 Ford F-350 Super Duty (Front) (Body: Standard Cab Pickup, Extended Cab Pickup, Crew Cab Pickup & Drive: 4WD / Qualifier: Dual Steering Dampers, Requires at least 2.0 (in) tall front bump stop spacers, Requires at least a 2.0 (in) suspension lift to use., Must Use with Steering Damper(s) RS5405, RS77405)