Install the bushings in the new arms. Using the supplied grease, apply a light coating to the outside of the urethane pieces. Install one of the four outer pieces into each arm. From the other side, install one of the two inner bushings (shown), seating it against the previously installed outer bushing. Install another outer bushing, seating it against the inner bushing. Next, apply grease to the inside of the bushings. Use a small screwdriver to work into the flutes. Then insert the steel crush tube through the center of the urethane bushings. Also apply a light coat of grease to the outside flanges, where the urethane bushings will contact the chassis.