I use these on my drift car , I kept going through break lines because sometimes while drifting tires would fall apart and "string" out. All the tire and wire would lash out and usually rip whatever was in its path . Including axel boots and break lines. After installing these I didn't have that problem. I can now shread tires with no worries about not being able to stop !
Bought these to replace powerstop drilled and sloted rotors and pads that lasted 15000 miles on my wifes Focus SVT. Found the drilled holes filled with rust particles after car sat more than a few days(we live in far northern New York) and then ground down the pads and rotors. Hoping the slots will provide similar cooling and stopping power with out the rust. Rotors and pads look good and fit well, easy to install even for an old man. So far so good, good stopping power, no noise and no dust