Great upgrade for my '97 Toyota. I notice an increase in stopping power, but nothing quantitative yet. Best of all, it works out of the box with no noise or calibration issues. Smooth as butter. Doesn't squeak, doesn't rattle. I'm glad they include spares, clamps, rubber parts, etc. Although they could have included a little more lube. I think I need to add some to my caliper pins. but no big deal ($2 at the parts store for the extra package). Well worth it if you need to change your brakes!