The EBC 99-01 BMW 323 2.5 (E46) Premium Rear Rotors are a high quality replacement rotor designed to fit the 1999-2001 BMW 323 2.5 (E46) model. The rotors are made from a special cast iron alloy designed to provide superior strength and durability. The rotors feature a unique slotted design to help improve braking performance and reduce brake fade. The rotors are precision-machined and balanced to ensure a smooth and quiet braking experience. The rotors are also coated with a corrosion-resistant finish to help protect against rust and corrosion.