The Build: Calipers, Rotors, and Fitment
| Component | Front axle | Rear axle |
|---|---|---|
| Vehicle | Audi A7 (4K8) | |
| Caliper | Alcon RC6, 6-piston forged | Alcon RC4 4-piston braking caliper plus a separate electronic parking brake caliper |
| Rotor | STOPFLEX 410mm carbon ceramic | STOPFLEX 380mm carbon ceramic |
| Rotor construction | Long-fiber CCB | Long-fiber CCB |
| Pads | STOPFLEX high-performance ceramic street | STOPFLEX high-performance ceramic street |
| Minimum wheel | 21-inch | 21-inch |
| Scope | Front and rear CCB conversion | |
Before you order: this kit needs a minimum 21-inch wheel to clear the 410mm front and 380mm rear rotors with the Alcon RC6 and RC4 calipers. Confirm your wheel diameter first.
What the Upgrade Actually Changes
| STOPFLEX feature | Why it matters on the A7 4K8 | What you notice |
|---|---|---|
| Carbon ceramic rotor, ~half the weight of steel | The A7 is a heavy four-door with real power. Cutting rotor weight pulls mass off each corner where it hurts handling most. | Sharper turn-in and a calmer ride over expansion joints and rough pavement. |
| Long-fiber CCB construction | Continuous fibers spread thermal stress through the rotor instead of concentrating it, so the disc survives repeated heat cycles. | Around 0.3μ friction still holds at 900°C surface temp, so the pedal doesn't go long on a hard descent. |
| Matched front and rear CCB | Front-only big brake kits skew bias and glaze rear pads. Balancing both axles keeps the car planted under hard stops. | Consistent pedal feel from the first stop of the morning to the last one down a grade. |
| STOPFLEX ceramic pads | The A7's 21-inch wheels show every speck of brake dust, and cold bite matters on a daily driver. | Very low dust, clean wheels between washes, and normal first-stop bite even near -20°C. |
| Corrosion-free rotor face | Cars that sit outside in rain or winter get an orange rust ring on steel rotors within hours. | No flash rust after overnight rain, and a crackle-texture ceramic face that stays clean through the spokes. |
What gets better
- Fade resistance on repeated highway stops and long canyon descents
- Lower unsprung weight for sharper steering and a smoother ride
- Balanced front/rear bias with the factory EPB fully retained
- Very low brake dust and a rotor face that won't rust
- Street life that can reach roughly 250,000–300,000 km
What to confirm first
- Wheel diameter: 21-inch minimum to clear the calipers
- Your exact A7 is the 4K8 generation
- Front and rear axle scope matches what you want
- Professional installation for bracketry, lines, and bedding
If you're not sure your car matches the spec shown here, send us your wheel size and VIN and we'll confirm Audi A7 4K8 fitment before you order through our Audi CCB collection.
Build Gallery
FAQ
Does this Audi A7 rear brake kit keep the electronic parking brake?
Yes. The rear setup uses an Alcon RC4 four-piston braking caliper plus a separate electronic parking brake caliper, so your A7 4K8 factory EPB keeps working with no coding changes.
What wheel size do I need to clear the 410mm STOPFLEX rotors?
This package runs 410mm front and 380mm rear STOPFLEX carbon ceramic rotors and needs at least a 21-inch wheel to clear the Alcon RC6 front and RC4 rear calipers.
Do STOPFLEX carbon ceramic rotors work when they're cold?
Yes. Paired with the matching STOPFLEX ceramic street pads, cold-temperature friction stays normal even around -20°C on the first stop, so daily street braking is quiet and predictable.
How much weight does the STOPFLEX carbon ceramic upgrade save on the A7?
STOPFLEX carbon ceramic rotors weigh about half as much as same-size cast-iron discs. That drops unsprung mass at each corner, sharpening turn-in and smoothing ride quality on the A7 4K8.
How long do STOPFLEX carbon ceramic rotors last on the street?
In street use without track sessions, STOPFLEX long-fiber carbon ceramic rotors can reach roughly 250,000 to 300,000 km, which makes the upgrade close to a one-time investment.
