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The GiroDisc 370mm slotted rear replacement rings are made as direct-fit replacements for 2021+ BMW M2, M3, and M4 (G8X) rear brake assemblies. These slotted rings restore rotor surface condition and help maintain consistent braking bite by aiding gas and dust evacuation. They are intended for customers replacing worn rings without changing the original braking hardware configuration.
GiroDisc 2021+ BMW M2/M3/M4 (G8X) 370mm Rear Replacement Rings
