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): 320 Height (mm): 45 Thickness (mm): 32 Minimum thickness (mm): 30 Axle application: Front APPLICATION Brand Model Engine Value Power (KM) Year MITSUBISHI LANCER EVO 5 2.0 TURBO GSR 97-99 MITSUBISHI LANCER EVO 6 2.0 TURBO 98-2001 MITSUBISHI LANCER EVO 7 2.0 TURBO 2000-2003 MITSUBISHI LANCER EVO 8 2.0 TURBO 2002-2005 MITSUBISHI LANCER EVO 9 2.0 TURBO 2005 -2008