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The Wilwood AERO4 rear big brake kit for 2007–2011 BMW E90 models replaces the factory rear discs and retains the OE parking brake assembly to complement front big brake upgrades. It pairs W4AR calipers with BP-10 compound pads and oversized 14.00" rotors matched to OE master cylinder output, ABS function, and vehicle bias. The package improves braking capacity, durability, and visual style for cars with larger wheels, tires, or upgraded suspension.
Wilwood AERO4 Rear Kit 14.00 Drilled 2007-2011 BMW E90 Series w/Lines
