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PowerStop Evolution drilled & slotted zinc-plated front rotors for 2017–2019 Audi A4 are a bolt-on upgrade that improves brake cooling and performance. Precision cross-drilled holes and rounded slots clear gases, dust and moisture to maintain a clean friction surface while chamfered holes reduce stress cracking. Zinc dichromate plating helps resist corrosion and each rotor is dynamically mill-balanced; sold as a pair.
Power Stop 17-19 Audi A4 Front Evolution Drilled & Slotted Rotors - Pair
