These direct replacement one piece rotors are a race proven performance upgrade that deliver improved stopping and fade resistance over the factory rotors. They are DBA's 4000 series enhanced performance rotors which feature Thermal Stability Profiling for improved heat handling and Thermo-Graphic paint markings for effective heat monitoring. This rotor incorporates the innovative Kangaroo Paw ventilation design, which runs cooler, stronger and outperforms traditional straight vane disc rotors by up to 20%. DBA offers 2 different face types (where available): Slotted - The unique 6x6 Wiper Slot is designed to efficiently clear dust and debris while maintaining consistent friction and a cleaner disc surface. Cross Drilled / Slotted - The unique 'XS' pattern is a premium (advanced) cross-drilled and slotted pattern, providing improved braking performance for street use only.