Brembo Brake disc - perforated/coated 09.8904.21

Brembo Brake Disc

They are almost always attached to the brake hub. During braking, the brake pads press against the disc brake, reducing the rotational speed of the disc and thus the entire vehicle. Brake discs are usually made of cast iron or steel alloys. Just like the brake pads, the brake disc wears out, although it does so more slowly than the pads. With frequently repeated braking actions, the brake discs heat up significantly and must therefore meet the highest standards. To withstand extreme loads, there are also discs made of carbon and ceramic.

To achieve increased heat resistance, brake discs are sometimes heat-treated. In this process, they are heated significantly after production and then cooled down again. Additionally, there are ventilated brake discs. Perforated or slotted brake discs provide better braking performance in wet conditions, as their indentations allow for quicker and more effective drainage of water that accumulates on the brake disc. Another advantage is that dirt, such as brake dust, disappears from the brake disc more quickly.