This caliper is a must-have for anyone who takes automotive performance seriously. The difference between stock and Raybestos WK1770 Professional Grade Caliper is night and day.The caliper construction is top notch, not to MENTION its smooth operation and strong grip. Replacing your stock calipers with this product gives you the added confidence you need to push your car to the limit. The only downside is that it's a bit pricey, but the improvement in brake performance and safety is worth every penny..