Power Stop 04-07 Volvo S60 Front Evolution Drilled & Slotted Rotors - Pair Improved Wet Weather Braking. Corrosion Resistant Gold Zinc Plating. Counter-Sunk To Resist Stress Risers And Cracking. Powerstop Drilled Rotors PowerStop Power Stop 04-07 Volvo S60 Front Evolution Drilled & Slotted Power Stop Evolution Rotors They are precision cross-drilled for maximum cooling and maximum performance during extreme conditions; rounded slots sweep away gas, debris, and moisture to... Decreased Brake Fade Pulsation And Wear. Tru-Cast Precision Machined For Exact OE Fit. Slots keep a clear contact patch between the pad and the rotor , Increased braking performance Drill holes keep brake rotors up to 180 degrees cooler