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: Full Number of holes: 5 Diameter (mm): 251 Height (mm): 51 Thickness (mm): 10 Minimum thickness (mm): 9 Axle application: Rear APPLICATION Brand Model Engine Value Power (KM) Year ALFA ROMEO 147 1.6 TS 120 2000-2010 ALFA ROMEO 147 1.6 TS 105 2000-2010 ALFA ROMEO 147 1.9 TD 115 2001-2010 ALFA ROMEO 147 1.9 TD 120 2003-2010 ALFA ROMEO 147 1.9 TD 100 2003- 2010 ALFA ROMEO 147 1.9 TD 140 2003-2010 ALFA ROMEO 147 1.9 TD 150 2004-2010 ALFA ROMEO 147 1.9 TD 170 2007-2010 ALFA ROMEO 147 2.0 TS 150 2000-2010 ALFA ROMEO 156 1.6 2001-2002 ALFA ROMEO 156 1.75 2001- 2002 ALFA ROMEO 156 1.9 TD 2001-2002 ALFA ROMEO 156 2.0 97-2002 ALFA ROMEO 156 2.4 TD 97-2002 ALFA ROMEO 156 2.5 97-2002 ALFA ROMEO 164 2.0 TURBO 87-92 ALFA ROMEO 164 2.5 TD 87-92 ALFA ROMEO 164 3.0 87-92 LANCIA DELTA INTEGRALE 2.0 TURBO HF EVOLUTION 1 210 91-93 LANCIA DELTA INTEGRALE 2.0 TURBO HF EVOLUTION 2 215 93-94 LANCIA THEMA 2.9 32 215 88-94