Installation Instructions 1) Park vehicle of level hard surface. Engage emergency brake. Place blocks in front and behind front wheels to prevent rolling. Observe all safety precautions and wear safety glasses. 2) With the vehicle on the ground, measure the distance from the bottom of the frame to the contact pad on the axle. (Fig. 1) 3) The SSR-121-40, 47, & 54 kits come with several spacers and different length bolts to fit a variety of vehicle configurations.
