dba's 5000 Series T3 Slotted Brake Discs are designed to be a high performance 2-piece brake disc upgrade. Featuring a 2-piece design with lightweight aluminium hubs, and hard-wearing cast-iron rotors, these are lightweight and stand up incredibly well to hard, repeated stops.2-piece design for durabilitySlotted face for sustained useKangaroo paw vent design for heat dissipationdba's 5000 Series Brake Discs use a 2-piece design for durability and heat resistance. The use of a 2-piece design allows the hubs to be made of T6 aluminium, reducing unsprung weight and enhancing handling. Making the rotor and the hub two separate pieces allows the rotor to expand outwards with heat, without warping where it joins to the brake disc hub.The rotors feature dba's T3 unidirectional slot design. This is designed not only to de-gas and resurface the brake pads as the brakes are used, but also to be quieter and smoother in use than many slotted designs. The design is unidirectional which means that t