Ceramic brake system Audi RS6 C8 4.0i V8 built in 2021 with 18,700km

Compatibility: Audi RS6 Avant (C8) | Model Year: 2021

Mileage: 18,700 km | Condition: Used / Grade A

The Carbon Ceramic Brake (CCB) system for the 2021 Audi RS6 C8 is the ultimate performance upgrade, offering virtually fade-free braking and a massive reduction in unsprung mass. At 18,700 km, this system is early in its service life—factory carbon ceramic rotors are designed to last up to $300,000\text{ km}$ under normal road use, nearly 10x the lifespan of steel counterparts.

Technical Specifications

• Front Rotors: $440 \times 40\text{ mm}$ (Carbon-Fiber Reinforced Silicon Carbide).

• Rear Rotors: $370 \times 30\text{ mm}$.

• Front Calipers: 10-Piston Akebono Monoblock (Available in Grey, Red, or Blue).

• Rear Calipers: 1-Piston Floating Caliper with integrated Electronic Parking Brake (ePB).

• Total Weight Saving: Approximately $34\text{ kg}$ ($75\text{ lbs}$) of unsprung weight compared to the standard steel setup.

Key Performance Benefits

• Thermal Stability: Operating temperatures can exceed $900\text{°C}$ without the “pedal wander” or fade typical of iron rotors.

• Cleaner Aesthetics: These rotors generate almost zero visible brake dust, keeping the RS6’s 21″ or 22″ wheels pristine.

• Corrosion Resistance: Unlike steel, ceramic rotors do not rust or “flash rust” after washing or during winter storage.

• Handling Precision: The $34\text{ kg}$ weight reduction directly improves steering response and allows the RS6’s air suspension to react faster to road imperfections.

Professional Installation & Maintenance Notes

1. Booster Compatibility: If you are retrofitting this to a car originally equipped with steel brakes, you must also install the Ceramic-Specific Brake Booster. The master cylinder pressures differ between the two systems.

2. Pads: Only use CCB-specific pads (e.g., 4M8698151D for front). Standard semi-metallic pads will destroy the ceramic surface layer within miles. At 18,700 km, the pads should still have roughly $70\text{–}80\text{%}$ of their life remaining.

3. Handling Caution: Ceramic rotors are extremely hard but brittle. When removing wheels, use two “wheel mounting pins” to ensure the rim does not strike the edge of the rotor, as a single chip can necessitate a total rotor replacement.

4. Disc Inspection: Verify the “Minimum Weight” stamped on the aluminum hat of each rotor. Unlike steel discs measured by thickness, ceramic discs are serviced based on weight and surface carbon density (using a Proceq carboteq gauge).

Pricing & Value Comparison

A new factory CCB kit from Audi typically retails for over $15,000–$18,000. Sourcing a used system with under 20k km offers significant savings while providing essentially the same longevity as a new unit.