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The GiroDisc slotted rear ring for 2007–2013 Mercedes-Benz S63 and S65 (W221) is a slotted replacement friction surface for the rear rotor that helps keep pad contact consistent and channels gases and debris away. These rear rings fit W221 S63/S65 rear brake assemblies; confirm pad fit and system compatibility before installation to ensure proper operation.
GiroDisc 07-13 Mercedes-Benz S63/S65 (W221) Slotted Rear Rings
