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): 356 Height (mm): 52 Thickness (mm): 34 Minimum thickness (mm): 32 Axle application: Front APPLICATION Brand Model Engine Value Power (KM) Year AUDI A6 QUATTRO AVANT C7 / 4G 3.0 SUPERCHARGED 300 2011-2012 AUDI A6 QUATTRO C7 / 4G 3.0 SUPERCHARGED 300 2011-2012 AUDI A6 QUATTRO AVANT C7 / 4G 3.0 SUPERCHARGED 310 2012-2018 AUDI A6 QUATTRO C7 / 4G 3.0 SUPERCHARGED 310 2012-2018 AUDI A6 QUATTRO C7 / 4G 3.0 TWIN TD 313 2011-2018 AUDI A6 QUATTRO AVANT C7 / 4G 3.0 TWIN TD 313 2011-2018 AUDI A6 QUATTRO AVANT C7 / 4G 3.0 TWIN TD 320 2015-2018 AUDI A6 QUATTRO C7 / 4G 3.0 TWIN TD 320 2015-2018 AUDI A7 QUATTRO 4G8 3.0 SUPERCHARGED 300 2010-2017 AUDI A7 QUATTRO 4G8 3.0 SUPERCHARGED 333 2014-2017 AUDI A7 QUATTRO 4G8 3.0 TWIN TD 313 2011-2017 AUDI A8 D4 / 4H 2.0 TURBO HYBRID 245 2012-2017 AUDI A8 QUATTRO D4 / 4H 3.0 TD 250 2010-2017 AUDI A8 D4 / 4H 3.0 TD 204 2011-2017