DBA 17-21 BMW 230I (w/M Sport Brakes/348mm Front Rotor) Front 4000 Series Slotted Rotor - DBA42284S

4000 SERIES T3 is the ultimate in direct replacement single piece performance brake rotors Featuring all the benefits of the 4000 Series plus DBA?s patented world renowned T3 bi directional slot design.
Installation Instructions