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The Wilwood AERO4 rear axle kit replaces factory rear discs with W4AR calipers, BP-10 compound pads, and oversized 14.00in rotors matched to OE master cylinder output and ABS for 2007–2011 BMW E90 series vehicles. The kit increases braking capacity and durability while maintaining vehicle bias requirements, complementing big wheel, tire, and suspension upgrades on customized cars and those with increased braking demands.
Wilwood AERO4 Rear Kit 14.00 Red 2007-2011 BMW E90 Series w/Lines
