Lift King LK4056 Bushing KitLift King LK4056 Bushing Kit The Lift King LK4056 Bushing Kit includes four bushings of different sizes. The different size bushings will adapt to most pickup bed tailgate hinge pins, including Ford, GM, Ram, and more. In the early 2000's and prior, all tailgate hinge pins were similar in size and the bushings are not needed. In the later 2000's several OEM's reduced the size of the hinge pins, the bushings provided are to adapt to the smaller