Trekline Motorsports' Lowering (Drop) Shackles are designed and manufactured to provide high strength and durability. The shackle body comes with a black powdercoat to give a great finished look and also high resistance to rust and corrosion. The bushings used on all of our shackles are Rubber Encased (RB) Bushings. They have a metal sleeve which is then 100% encased in rubber. This is the same style of bushings used by OEM manufacturers as it provides no squeaking and does not require to be greased.