PowerStop Evolution drilled & slotted rotors for 2008–2013 BMW 135i are sold as a pair and provide a bolt-on upgrade for improved cooling and performance. Precision cross-drilled holes and rounded slots sweep away gases, dust and moisture while chamfered hole edges minimize stress cracking. Zinc plating resists corrosion and the pair is dynamically mill-balanced for smooth operation with no special modifications required.
Power Stop 08-13 BMW 135i Front Evolution Drilled & Slotted Rotors - Pair