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): 354 Height (mm): 75 Thickness (mm): 20 Minimum thickness (mm): 18 Axle application: Back APPLICATION Brand Model Engine Value Power (KM) Year LAND ROVER RANGE ROVER L322 2.9 TD 2005-2007 LAND ROVER RANGE ROVER L322 3.6 TWIN TD 272 2007-2009 LAND ROVER RANGE ROVER L322 3.6 TWIN TD 272 2009-2010 LAND ROVER RANGE ROVER L322 3.6 TWIN TD 272 2010 -2013 LAND ROVER RANGE ROVER L322 4.2 SUPERCHARGED 2005-2009 LAND ROVER RANGE ROVER L322 4.4 2005-2007