GLC63 390mm Front and 360mm Rear Rotors (X253) GLC43-INT the limits of the factory

the limits of the factory manifolds are well documented

ensuring smoother airflow and more consistent power delivery

the upgraded wheel will not include paddle shift

Optimum Tuning gives you more than just added power — it delivers performance that feels engineered specifically for your car

GLC63 390mm Front and 360mm Rear Rotors (X253) GLC43-INT the limits of the factoryAMG Front and Rear Brake Upgrade This product includes a full set of four (4) 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