The TeraFlex TJ high steer knuckle kit is designed to be used with 4+" of lift, and will help to maximize steering component ground clearance and assist in easy correction of steering geometry. Note: The high steer knuckle kit is not an all inclusive kit. Additional modifications will be required that are not included in the TeraFlex high steer knuckle kit. These modifications include new tie rod and drag link, and may include front swaybar links, front trackbar mounting, and offset wheels. This kit will work with 15" wheel with 3.5" or less backspacing. This kit will fit all TJ wrangler models including Rubicon and Unlimited and is for use with 4+" of lift.