Heat is the primary cause of ineffective brakes due to fade. There is a “layer” of gases that builds up between the pad and rotor surface which inhibits performance. Here’s where Power Slot rotors make a big difference. Power Slot machines ‘Vac-U-Slots’ into the rotor to “wipe” brake pads clean, evacuate gases, and shed heat. In fact, the 'Vac-U-Slots' are cut deeper than the minimum thickness of the rotor to insure maximum performance braking for the complete life of the rotor. A combination of a “high performance pad” and Power Slot rotors will provide superior reliable braking. Rotors are sold individually.