These are Laser cut steel shackles with urethane bushings, specifically designed for the new 2015 and up Ford F-150, including the 2018 and newer diesel models. Ground Force is an all-American fabrication of premium lowering and leveling kits for light trucks, SUVs & Jeep. Ground Force’s 30+ years of experience in the suspension business results in the highest quality components including military coatings on hardware, engineered polyurethane for ride and noise isolation. You can demand the best demand with Ground Force. For more information, call 724-430-2068 or click here.