Brembo Xtra Brake Discs are cross-drilled or dimpled for extra cooling, heat fade resistance, and stopping power.Cross-drilled for extra stopping powerHoles aid cooling and degassingBetter wet performanceBrembo Xtra brake discs are cross-drilled (or in some cases, dimpled) for enhanced performance. Holes in the surface of the brake disc offer several advantages.A drilled surface offers a better surface for the brake pad to bite down on. The edges of the holes provide additional friction when the brake pedal is pressed.When driving in wet conditions, the holes in the surface help clear water. This means there isn't that slight delay when pushing the pedal the first time while the pad sweeps the water from the surface of the disc.The holes in surface of the disc help heat and hot gases escape into the vented centre of the disc, keeping temperatures lower. This means Brembo Xtra brake discs perform better under harsh repeated braking when the brake system is hot.At higher temperatures, th