The rear of these cars uses an eccentric bolt to adjust toe. This bolt has a very finite range of adjustment. If you purchase camber adjustable rear lower control arms you will often run out of factory toe adjustment because camber affects toe. These aftermarket toe arms solve this problem by giving you a much larger toe adjustment range. They also have the added benefit of removing unwanted play from the rear suspension for more precise handling.
If you have any questions about how necessary toe arms are for your particular car and build please contact us!