Brake discs, found within the Brakes > Brake Mechanical > Brake Disc category, are critical components of a vehicle's braking system. These steel or composite rotors work with brake calipers and pads to create friction, slowing or stopping wheel rotation. Located on each wheel hub, brake discs experience significant thermal stress during operation and require periodic inspection and replacement for optimal braking performance and safety. Key characteristics include diameter, thickness, ventilation style (solid, vented, drilled/slotted), and hub bore size - ensuring compatibility with the vehicle's specific braking system is paramount. Examples within this assortment include discs for Volvo Trucks, Mercedes-Benz Trucks, BMW, and passenger vehicle applications like the Peugeot, MPN 1647883380, as well as quality aftermarket options from brands like Febi (FEBI101734).