Designed to fit 2015-2021 S550 Mustangs;Lighter than competitors K-members;Manufactured from 1-inch, 1-1/4-inch, and 1 ?-inch DOM tubing;Works with factory control arms;Give you a 53-pound reduction over the factory K-member and engine mounts;Designed to allow up to ?-inch engine lowering with included BMR engine mounts;Compatible with factory or aftermarket steering racks;Designed for street performance and drag race applications;Durable powdercoat finish;3-4 hour installation time;Proudly designed in the U.S.A.;Proudly made in the U.S.A.