EBC GD138 84-86 Mercedes-Benz 190/190E 2.3 GD Sport Front RotorsEBC GD138 84 86 Mercedes Benz 190 190E 2. 3 GD Sport Front Rotors Product Information EBC Sport Rotors feature wide aperture slots that draw cool air into the braking contact area and reduce temperatures preventing brake fade. Dimple drilling avoids stress cracks and the anodized EBC finish provides a great look while preventing corrosion. EBC Sport Rotors now feature reduced 3 slots venting which provides slightly less air noise under heavy braking