Note: These discs suit the performance suspension RX8 variants with 323mm diameter. Please check fitment before ordering. WinmaX WST Performance Slotted Brake Discs Mazda RX8 323mm diameter front pair. WinmaX brake rotors offer a performace upgrade over OE discs by using high quality castings and improved cooling to be able to handle more spirited driving on the street or track. Disc Specifications: Diameter (mm): 323 Height (mm): 46 Thickness (mm): 24 Minimum Thickness (mm): 22 Centre Hole (mm): 72 Stud Holes: 5 Weight (kg): 8.6