Brembo Pair of Xtra Brake Discs - Rear Pair - Solid 230x9mm

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, the pad compound can start to combust into hot gas which can build up as a layer between the pad and disc surface. This layer of hot gas prevents the pad properly acting on the disc. The holes in the surface of this disc help this gas to escape and allow the brakes to continue fucntioning optimally.Lastly the drilled design also acts as a scraper for the brake pad; cleaning away any hazardous materials or deposits on the pads which could otherwise impede the braking performance.For certain applications Brembo have opted for a "dimpled" face where the holes are not drilled all the way through. This has been done to help the disc resist cracking.These are supplied as a pair for most applications, unless otherwise stated.