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The Alcon Pro-System rotor is specified at 12.19 inches diameter, 32 mm thickness and 52.5A offset for left-side installation. Supplied as a Pro-System OE-style rotor, it is intended for track-capable braking setups where correct dimensions and offset are required. Use this left-side rotor as a direct replacement within compatible Alcon braking packages to maintain fitment and braking geometry.
Alcon Pro-System 12.19in x 32mm x 52.5A Rotor - Left
