These great control arm kits fix *alignment, ball joint, and spring clearance issues! Rocky Road control arms are identical in length to the stock control arms, the difference is in the angle of the mounting plate for the new replaceable ball joints. While the ball joints have an insane amount of movement range, the design of our control arms puts the ball joint in a neutral position while Jeep is lifted. This eliminates the possibility of the ball joint binding up and guarantees a longer life. Their engineering also allows for easier and more accurate camber alignment by your local alignment specialist.