EBC Brakes BSD Brake Rotor Set - BSD931 is a high-performance brake rotor set designed to provide maximum stopping power and long life. The rotors are made from a special cast iron alloy that resists warping and cracking, and feature a unique angled vane design for improved cooling. With superior heat dissipation, these rotors will keep your brakes running cooler and longer. Plus, they come with a limited lifetime warranty for added peace of mind.