all brand new StopTech carbon ceramic pads and their cross-drilled and slotted rotors. I bedded them properly as their instructions. I also completely disassembled them and reassembled them using CRC brake stop-squeal on every contact surface. The squeal is beyond a minor annoyance... it is very loud... I am gaving to engage my hand brake while stopping just because engaging it absorbs the vibration/resonance causing all the noise.