The EBC 04-10 BMW 525i E60 3.0L BSD Front Rotors are a high-performance brake rotor set designed for BMW 5-series vehicles from 2004-2010. This set of rotors is constructed with a BSD (Brake Surface Design) that provides superior stopping power and improved brake pedal feel. The rotors are made from high-grade cast iron for increased durability and resistance to warping. They also feature a black zinc finish for corrosion protection and a longer service life.