The PowerStop Z23 Evolution Sport Brake Upgrade Kit for 2004–2009 Audi S4 delivers a bolt-on front-and-rear upgrade with drilled & slotted rotors, Carbon-Fiber Ceramic Z23 pads and stainless-steel hardware. The drilled and slotted rotors improve cooling, the carbon-fiber ceramics cut dust and enhance stopping, and front pads include integral sensor wires. It’s engineered as an affordable performance-minded upgrade without modifications.
Power Stop 04-09 Audi S4 Front & Rear Z23 Evolution Sport Brake Kit