The build: hardware and fitment
| Item | Featured Cayenne Coupe 9Y3 configuration |
|---|---|
| Vehicle | Porsche Cayenne Coupe (9Y3) |
| Front hardware | Akebono 10-piston fixed calipers + 440mm STOPFLEX carbon ceramic rotors |
| Rear hardware | Brembo 4-piston braking caliper plus separate electronic parking brake caliper + 410mm STOPFLEX carbon ceramic rotors |
| Pads | STOPFLEX low-dust ceramic pad setup |
| Wheel context | Presented on 21-inch wheels |
| Weight saved | Approximately 35 kg total over the iron setup |
| Scope | Full front and rear carbon ceramic conversion, road-focused |
Check this before you order: this is a custom big brake conversion, not a universal bolt-on for every Cayenne wheel and trim. The 440mm front package is shown on 21-inch wheels. Don't assume 20-inch clearance without confirming your exact wheel barrel profile and spoke shape first.
What the upgrade actually changes
| STOPFLEX feature | Why it matters on the Cayenne Coupe 9Y3 | What you notice |
|---|---|---|
| 440mm front / 410mm rear carbon ceramic rotors | A heavy SUV builds brake heat fast under repeated hard stops, which is where iron rotors start to fade. | A firmer, more repeatable pedal coming down a long grade or after back-to-back stops. |
| Roughly half the weight of same-size steel rotors | Rotor mass is unsprung and rotating weight at each corner, the worst place to carry it. | Sharper turn-in and a suspension that settles quicker over broken pavement. |
| Holds about 0.3μ surface friction at 900°C | Big SUVs dump huge energy into the brakes, so high-temp friction stability is what keeps the pedal honest. | Braking feel that stays consistent instead of going soft when things heat up. |
| Low-dust ceramic pads, rust-free rotors | Iron setups coat wheels in dust and grow a rust film after every wash or wet drive. | Cleaner wheel faces between washes and no surface rust staring back at you. |
| Long-fiber CCB construction | This Cayenne lives on the street, so the rotors need real daily durability, not just track-day looks. | A premium ceramic-coated finish behind the spokes that's built to last on the road. |
What gets better
- Stronger resistance to fade under repeated heavy braking
- Less unsprung mass for sharper steering response
- Very low brake dust with the matched STOPFLEX pads
- Rotors that don't rust after rain or a wash
- A more technical, high-end look behind open-spoke wheels
- Street rotor life rated around 250,000 to 300,000 km
What to confirm first
- Your exact wheel design clears the 440mm front rotor and 10-piston caliper
- Front uses Akebono 10-piston calipers; rear uses a Brembo 4-piston braking caliper plus a separate electronic parking brake caliper
- Run the matched STOPFLEX pads to get the low-dust behavior
- This is a road-focused conversion, not a track-prep package
- Bed the brakes in properly before judging noise or feel
If you're not sure your car matches the spec shown here, send us your details and we'll confirm Porsche Cayenne Coupe 9Y3 fitment before you order through our Porsche CCB collection.
Build gallery
FAQ
Why does this build pair Akebono front calipers with Brembo rear calipers?
The front axle takes most of the heat on a heavy SUV, so this build runs Akebono 10-piston front calipers for thermal capacity and clamping force. The rear runs a Brembo 4-piston braking caliper plus a separate electronic parking brake caliper, which keeps factory-style parking brake function intact.
How is this different from factory Porsche carbon ceramic brakes?
It's a custom carbon ceramic conversion for owners who want CCB performance without chasing a factory PCCB retrofit. The build combines 440mm front and 410mm rear STOPFLEX rotors, OEM-supplier fixed calipers, low-dust ceramic pads, and long-fiber rotor construction.
Will the 440mm front setup clear my wheels?
This configuration is built around 21-inch wheels. A 440mm front rotor with a 10-piston caliper is a large package, so don't assume 20-inch clearance without confirming your exact wheel design first.
Will carbon ceramic brakes run cleaner and quieter day to day?
Paired with STOPFLEX pads, the system produces very low brake dust, and the rotors don't develop the rust film iron discs get after rain or a wash. Brake noise still varies with temperature, conditions, and pad bedding, as with any system.
How long do STOPFLEX carbon ceramic rotors last on a street Cayenne?
For street use rather than track use, STOPFLEX rates rotor life at roughly 250,000 to 300,000 km. Real-world life depends on driving style, pad choice, maintenance, and heat exposure.
