EBC drilled standard replacement brake discs are sized and shaped to OE factory dimensions with the strictest quality controls and machined to be within tight tolerances. The high quality cast iron meets or exceeds factory original specifications regarding thermal buildup, brake noise, vibration, and wear. EBC sources only highest quality parts from well known and proven OEM manufacturer vendors and we are responsible for and guarantee those parts to fit and perform as expected. All suppliers of castings for the EBC group are ISO approved to the highest specification and have been visited and approved by the German TUV authorities.