The build: calipers, rotors, wheels
| Item | STOPFLEX build · Cayenne Coupe 9Y3 |
|---|---|
| Vehicle | Porsche Cayenne Coupe (9Y3) |
| Front | OEM Akebono 10-piston calipers + 440mm STOPFLEX carbon ceramic rotors |
| Rear | OEM Akebono 4-piston calipers + 410mm STOPFLEX carbon ceramic rotors |
| Wheel requirement | 22-inch wheels, required for 440mm front clearance |
| Parking brake | Compatible with the factory electronic parking brake |
| Rotor construction | Long-fiber carbon ceramic with crackle-texture ceramic surface coating |
| Upgrade scope | Front and rear carbon ceramic rotor conversion, OEM caliper architecture |
Read this before you order: the front rotor here is 440mm, which makes wheel fit a hard requirement, not a suggestion. This exact front package needs 22-inch wheels. If your Cayenne Coupe rolls on 20s or 21s, this front setup will not clear — get your wheel diameter and barrel profile checked first.
What the upgrade changes on a 9Y3
| STOPFLEX feature | Why it matters on the Cayenne Coupe | What you notice |
|---|---|---|
| Carbon ceramic rotor material | A Coupe this heavy stacks heat fast on long downhill runs and repeated high-speed stops. STOPFLEX rotors still hold around 0.3μ surface friction at 900°C in testing. | Pedal feel stays consistent when a steel setup would start going soft. |
| About half the rotor weight | STOPFLEX carbon ceramic rotors weigh roughly half what same-size steel rotors do. On big wheels with this much mass, that is real unsprung weight gone. | The suspension settles quicker over rough pavement and the front end feels less heavy. |
| Low dust with STOPFLEX pads | Big luxury SUVs cake their front wheels in dust. Pair these rotors with STOPFLEX pads and that mostly stops. | Wheels stay clean for weeks, not days. |
| No rust after rain | Steel rotors surface-rust overnight after a wet drive. Carbon ceramic doesn't. | The hardware looks the same after a rainy week as it did the day it went on. |
| 440mm front on 22-inch wheels | A full-size rotor finally fills a 22-inch wheel the way the factory big-brake look intends. | The brake package looks proportioned to the car instead of lost behind the spokes. |
What gets better
- Steadier pedal when the brakes are hot and worked hard
- Less unsprung weight at each corner for cleaner suspension response
- Much lower brake dust on the front wheels with STOPFLEX pads
- No rotor rust after rain, so the setup stays looking sharp
- Normal first-stop bite even in deep cold, down around -20°C
- Long street life, roughly 250,000 to 300,000 km away from the track
What to confirm first
- Wheel diameter: this front package is 22-inch only
- Spoke geometry and barrel profile clear the 440mm rotor and 10-piston caliper
- Your car is the 9Y3 Cayenne Coupe, not a different generation
- Front and rear scope you want, since this build does both axles
- STOPFLEX pads are used to get the low-dust behavior
If you're not sure your car matches the spec shown here, send us your wheel and trim details and we'll confirm Cayenne Coupe 9Y3 fitment before you order through our Porsche CCB collection.
Build gallery
Cayenne Coupe 9Y3 CCB FAQ
Can you fit OEM 10-piston front brakes to a Porsche Cayenne Coupe 9Y3?
Yes. This build runs OEM Akebono 10-piston front calipers with 440mm STOPFLEX carbon ceramic rotors. Wheel clearance is part of the package, so confirm it before you order.
Do I need 22-inch wheels for the 440mm front setup on the Cayenne Coupe 9Y3?
Yes. The 440mm front package shown here requires 22-inch wheels. It will not clear smaller 20-inch or 21-inch wheels in this application.
What do STOPFLEX carbon ceramic rotors actually change on a Cayenne Coupe?
You get roughly half the rotor weight of same-size steel, much lower brake dust with STOPFLEX pads, no rust after rain, and steadier braking once the rotors are hot on a heavy, fast SUV.
Does this rear setup keep the factory electronic parking brake?
Yes. The rear hardware in this build stays compatible with the factory electronic parking brake, so there is no EPB workaround needed.
How long do STOPFLEX carbon ceramic rotors last on a street-driven Cayenne?
On the street, away from track use, STOPFLEX carbon ceramic rotor life can reach roughly 250,000 to 300,000 km, well past a typical steel rotor on a heavy SUV.
