These are adjustable sway bar extensions to suit 2" to 4" of lift, allowing your sway bar to work properly and reset back to it's factory riding angle on the road. Adjust the rod length according to your lift height, and so that the sway bar is riding as close to a factory position as possible. The base setting should be to add half of your lifted height to the stock length. Take new links, make them the same length as stock, then add exactly half of the lifted lift height amount to them, and check for clearances. If they're set too long, they will contact the trailing arm. Gold zinc plated, high quality OE style ball end joints, sealed for long life, this kit includes all that you will need.