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: 4 Diameter (mm): 305 Height (mm): 45 Thickness (mm): 28 Minimum thickness (mm): 26 Axle application: Front APPLICATION Brand Model Engine Value Power (KM) Year ABARTH GRANDE PUNTO 1.4 TURBO 155 2008-2010 ABARTH PUNTO EVO 1.4 TURBO 163 2010-2014 ABARTH PUNTO EVO 1.4 TURBO 180 2011-2014 FIAT GRANDE PUNTO ABARTH 1.4 TURBO 155 2007-2010 FIAT PUNTO EVO 1.4 TURBO ABARTH 2010 -2012