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The GiroDisc 380mm slotted front ring for 2014–2020 BMW M2, M3 and M4 (F8X with blue calipers) is a replacement slotted surface sized to match the specified 380mm front rotor fitment. It reproduces the slot pattern intended to aid pad cleaning and gas escape, matching the front rotor interface for F8X M cars equipped with the noted caliper option.
GiroDisc 14-20 BMW M2/M3/M4 (F8X w/Blue Calipers) 380mm Slotted Front Rings
