3Q Brake MAZDA MIATA 90-93 Performance Brake Rotor #71013-LR Slotted Drilled Plated Ventilated AIMCO# 3299 Ventilated Pair *ISO-certified for reliable performance *Precision drilled holes maximize air flow for increased cooling; keep surfaces clean and dry for improved friction bite; help get rid of excess water in rain. *Slots help keep discs clean by wiping away the debris formed between pad and disc; eliminate gases that can cushion the discs against the brake pads *Zinc plated finish for corrosion resistance. *Balanced to prevent vibration at high speeds for smooth stopping and a shorter braking distance Position: Front/ # of Stud Holes: 4 Type:Ventilated Rotor/ Overall Depth (mm): 55 Outside Diameter (mm): 234.5/ Center Bore Diameter (mm): 45 Initial Thickness (mm) : 18/ Minimum Discard Thickness (mm) : 16.5