This Alcon slotted rotor ring measures 365mm outer diameter, 257mm inner diameter, and 32mm thickness for the left side as specified. It’s supplied as a vehicle-specific rotor ring component intended for use with compatible Alcon Pro-System brake assemblies where the given diameters and slotting match the vehicle’s brake hardware and fitment requirements.
Alcon 365mm OD x 257mm ID x 32mm Thickness Slotted Rotor Ring - Left