EBC Pro-Lite Rear Brake Rotor MD4148 The worlds only complete line of direct bolt-on brake discs made in EBCs UK manufacturing plant using: Billet-steel rotor rings that deliver 18 percent more stopping power than stainless steel equivalents EBC Pro-Lite rotors are complete bolt-on and go rotor assemblies made with forged aluminum center hubs, high friction billet steel rotor rings and sturdy riveted construction. EBCs solid HPSR rotor programs are low carbon steel units zinc plated to minimize corrosion.