The PowerStop semi-coated brake rotor for 2009–2011 Audi A4 front applications is a direct bolt-on replacement that keeps original-equipment fit and braking behavior while adding corrosion protection where it shows. Silver epoxy coats the hat, outer edge, and vanes to reduce rust. These rotors meet tight DTV and runout tolerances, match OEM weight and vane count, use a cross-hatched friction surface for pad break-in, are dynamically balanced, and are sold individually.
Power Stop 09-11 Audi A4 Front Semi Coated Rotor