The Wilwood AERO4-MC4 rear kit for 2015–2023 Mustang uses the MC4 parking brake assembly to replace factory rear discs and complement front big brake upgrades. High-capacity AERO4R calipers, BP-10 pads, and oversized 14.00" rotors are matched to OE master cylinder output and ABS bias for balanced stopping. The kit enhances brake performance and durability for modified or heavy-use vehicles.
Wilwood AERO4 / MC4 Rear Kit 14.00 15-23 Mustang w/Lines & Cables