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): 49 Thickness (mm): 28 Minimum thickness (mm): 26 Axle application: Front APPLICATION Brand Model Engine Value Power (KM) Year INFINITI FX35 3.5 2003-2005 INFINITI FX45 4.5 2003-2005 INFINITI Q70 2.2 TD 170 2014-2020 INFINITI Q70 3.7 320 2014-2020 INFINITI Q70 HYBRID 3.5 HYBRID 360 2014-2020 INFINITI QX50 3.0 TD 238 2013-2020 INFINITI QX50 3.7 320 2013-2020 NISSAN SKYLINE (V35) V35 3.5 2004-2006 NISSAN SKYLINE (V36) V36 2.5 2006-2014 NISSAN SKYLINE (V36) V36 3.5 2006-2008 NISSAN SKYLINE (V36) V36 3.7 2007-2014