dba's Street Series slotted brake discs are designed as a performance upgrade. Using a slotted face design, and dba's proprietry universal slot design, these provide excelllent performance even under heavy braking.Slotted face for better performance under sustained u seKangaroo Paw design provides better heat dissipationPrecisely machined to prevent brake judderdba's Street Series T2 slotted brake discs are a performance upgrade offering outstanding performance under sustained braking.The T2 slotted face pattern degasses and cleans the surface of the brake pad as you brake. This helps prevent loss of braking performance under sustained braking. Where a plain surfaced brake pad might start to suffer from a build-up of gas between the pad and disc, these will sweep the pad surface clean as you brake.These discs also feature dba's kangaroo paw vent design. This is designed to quickly and efficiently force feed air into the centre vented section of the disc.dba use CBN tooling to make thes