S63 400mm Front Rotors (W221) UPOMRJXKR584 Positive Seal O-Ring on the

Positive Seal O-Ring on the Piston’s face and Billet Construction

exhaust gas velocity improves significantly

fuel quality

1-Step Colder Designed for higher boost and increased cylinder pressure

That means the engine clears spent gases faster

S63 400mm Front Rotors (W221) UPOMRJXKR584 Positive Seal O-Ring on theAMG Front Brake Upgrade This product includes two (2) brake rotors complete. Replace your factory rotor with our 2 piece floating design. Anti Rattle floating disc on aluminum hat. Floating 2 piece Rotor Direct Factory Replacement Aluminum hat anodized in black Ventilated Cross drilled and slotted iron rotor Increased performance due to superior heat dissipation Anti Rattle floating design Noise free Standard floating rotors have one main