StopTech drilled and slotted sport rotors are engineered as direct, one-piece replacements that improve braking by evacuating heat, gasses, and dust while adding initial bite. Cross-drilling plus slotting reduce pad glazing and help wet performance; a protective e-coat or painted hat shields against corrosion. Advanced metallurgy and precision finishing reduce pad noise and thermal cracking.
StopTech Power Slot 09-10 Audi A4/A4 Quattro / 08-10 A5 / 10 S4 Rear Left Drilled & Slotted Rotor