Turbo Groove automotive brake discs have a widened, arcuate slit that increases the flow of cool air, lowering the temperature of the brake pads and disc, while draining dust, dirt and hot gases better than a straight line, which can rust and become ineffective. Drilled holes remove surface gases when braking from high speed, while not weakening the structure of the disc as in through drilling. TECHNICAL DATA Type: Drilled and Slotted Full / Ventilated: Ventilated Number of holes: 5 Diameter (mm): 266 Height (mm): 68 Thickness (mm): 18 Minimum thickness (mm): 16 Axle application: Back APPLICATION Brand Model Engine Value Power (KM) Year SUBARU IMPREZA 2.0 TURBO 98-2002 SUBARU LEGACY BF5 2.0 TURBO 92-94 SUBARU LEGACY BC5 2.0 TURBO 92-94 SUBARU LEGACY BG5 2.0 TWIN TURBO 93-96 SUBARU LEGACY BG5 2.0 TWIN TURBO 96-99 SUBARU LEGACY BG9 - NOT UK 2.5 96-98