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The DBA 4000 Series T3 slotted front rotor for 2019–2022 BMW 330i with M Sport brakes and 348mm front rotors is a direct-replacement single-piece rotor that incorporates DBA’s patented bi‑directional T3 slot design. The slotted face aids in clearing gas and debris from the pad interface to maintain consistent friction and bite, making it a targeted upgrade for M Sport brake applications.
DBA 19-22 BMW 330i (w/M Sport Brakes/348mm Front Rotor) Front 4000 Series Slotted Rotor
