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): 47 Thickness (mm): 30 Minimum thickness (mm): 28 Axle application: Front APPLICATION Brand Model Engine Value Power (KM) Year AUDI A4 CONVERTIBLE 1.8 TURBO 2003-2008 AUDI A4 CONVERTIBLE QUATTRO 1.8 TURBO 2003-2009 AUDI A4 QUATTRO B7 1.8 TURBO 2004-2008 AUDI A4 QUATTRO B7 2.0 TURBO 2004-2008 AUDI A4 B7 2.0 TURBO 2005-2008 AUDI A4 CONVERTIBLE 2.0 TURBO 2005-2009 AUDI A4 B7 2.5 TD 2004-2008 AUDI A4 B7 2.7 TD 2006-2008 AUDI A4 CONVERTIBLE 2.7 TD 2006-2009 AUDI A4 CONVERTIBLE QUATTRO 3.0 2003-2006 AUDI A4 QUATTRO B7 3.0 TD 2004-2008 AUDI A4 CONVERTIBLE QUATTRO 3.0 TD 2005-2009 AUDI A4 QUATTRO B7 3.2 2004-2008 AUDI A4 B7 3.2 2004-2008 AUDI A4 CONVERTIBLE QUATTRO 3.2 2005-2009 AUDI A4 CONVERTIBLE 3.2 2005-2009 SEAT EXEO 2.0 TD 170 2009-2013 SEAT EXEO 2.0 TURBO 200 2009-2013 SEAT EXEO 2.0 TURBO 211 2010-2013