EBC GD7212 03-05 Buick Rainier 4.2 GD Sport Front RotorsEBC GD7212 03 05 Buick Rainier 4. 2 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 while