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): 52 Thickness (mm): 30 Minimum thickness (mm): 28 Axle application: Front APPLICATION Brand Model Engine Value Power (KM) Year AUDI A4 QUATTRO B8 1.8 TURBO 2008-2011 AUDI A4 B8 1.8 TURBO 120 2008-2011 AUDI A4 B8 1.8 TURBO 160 2008-2011 AUDI A4 B8 2.0 TD 2008-2011 AUDI A4 QUATTRO B8 2.0 TD 170 2008- 2011 AUDI A4 B8 2.0 TURBO 180 2008-2011 AUDI A4 QUATTRO B8 2.0 TURBO 2008-2011 AUDI A4 B8 2.0 TURBO 211 2008-2011 AUDI A4 ALLROAD QUATTRO 2.0 TURBO 2009-2011 AUDI A4 B8 2.7 TD 2008-2011 AUDI A4 QUATTRO B8 3.0 TD 2008-2011 AUDI A4 ALLROAD QUATTRO 3.0 TD 2009-2011 AUDI A4 B8 3.2 2008-2011 AUDI A4 QUATTRO B8 3.2 2008-2011 AUDI A5 B8 1.8 TURBO 168 2007-2011 AUDI A5 CABRIOLET B8 1.8 TURBO 158 2009-2011 AUDI A5 B8 1.8 TURBO 158 2009-2011 AUDI A5 QUATTRO B8 2.0 TURBO 208 2008-2011 AUDI A5 B8 2.0 TURBO 177 2008-2011 AUDI A5 CABRIOLET B8 2.0 TURBO 208 2009-2011 AUDI A5 CABRIOL ET QUATTRO B8 2.0 TURBO 208 2009-2011 AUDI A5 CABRIOLET B8 2.0 TURBO 177 2009-2011 AUDI A5 B8 2.7 TD 188 2007-2011 AUDI A5 CABRIOLET B8 2.7 TD 188 2009-2011 AUDI A5 QUATTRO B8 3.0 TD 237 2007-2011 AUDI A5 CABRIOLET QUATTRO B8 3.0 TD 237 2009-2011 AUDI A5 B8 3.2 261 2007-2011 AUDI A5 QUATTRO B8 3.2 261 2007-2011 AUDI A5 CABRIOLET QUATTRO B8 3.2 261 2009-2011 AUDI A5 CABRIOLET B8 3.2 261 2009-2011 AUDI Q5 QUATTRO 8R 2.0 TD 170 2008-2011 AUDI Q5 8R 2.0 TD 143 2008-2011 AUDI Q5 QUATTRO 8R 2.0 TD 143 2008-2012 AUDI Q5 QUATTRO 8R 2.0 TURBO 180 2008-2011 AUDI Q5 QUATTRO 8R 2.0 TURBO 211 2008-2012 AUDI Q5 QUATTRO 8R 3.0 TD 240 2008-2011 AUDI Q5 QUATTRO 8R 3.2 270 2008-2012