Dynamic Friction Company Disc Brake Rotor P/N:900-73079

Give your rear brakes a precision-balanced friction surface with the DYNAMIC FRICTION brake rotor, part number 900-73079, a high-carbon alloy rotor with GEOMET® coating and an aluminum hat that is mill-balanced for smoother stopping. It fits many vehicles, among them the 2026 Audi A6 Quattro, 2019-2026 Audi A8 Quattro and 2017-2026 Audi Q7, as a direct-fit rear rotor for the listed applications. See the Buyer's Guide tab for the full list and engine details.

• Precision mill-balanced: Every rotor is 100% mill-balanced for smoother stopping and to help minimize vibration.
• Premium iron castings: Engineered with G3000/G11H18 iron castings for strength, stability and durability. The OE vane configuration is designed for proper and maximum heat dissipation.
• GEOMET® coating: Coated to provide high-performance corrosion protection.
• Fine-turned finish (16 RMS): Intended to improve initial rotor and pad break-in.

Disc thickness variation and lateral runout are both held to maximum tolerances. A brake rotor gives the pads a flat surface to clamp against, which turns the vehicle's motion into heat. Signs a rotor may need replacing include a pulsating brake pedal, vibration when stopping, grinding noises, and scoring or grooves on the braking surface. Replacing both rear rotors together as a matched pair is recommended for even, balanced braking.