The EBC 01-03 BMW 525i 2.5 (E39) BSD Front Rotors are designed to provide superior braking performance and reliability for BMW 5 series vehicles. These rotors are machined from high-grade cast iron and feature an advanced curved slotting design to reduce brake noise and vibration. The rotors also feature a black zinc-plated finish for corrosion resistance and a longer service life. They are an ideal upgrade for vehicles with stock brakes or those looking to improve braking performance.