Vehicle and upgrade specification
| Item | Original setup | STOPFLEX upgrade |
|---|---|---|
| Vehicle | Porsche Cayenne (9YA) | |
| Front caliper | Alcon 6-piston aftermarket | Retained |
| Rear caliper | Aftermarket 4-piston | Retained |
| Front rotor | Steel, 410 mm | STOPFLEX CCB, 410 × 36 mm |
| Rear rotor | Steel, 380 mm | STOPFLEX CCB, 380 × 28 mm |
| Rotor weight | Heavy steel disc | About half the weight of the same-size steel rotor |
| Scope | Front and rear rotor conversion on an existing aftermarket big brake kit | |
This is a kit-matched conversion, not a universal Cayenne rotor
It only works on a Cayenne that already runs a compatible aftermarket BBK like the Alcon setup here. Rotor diameter, thickness, hat offset, and annulus depth all have to match the existing calipers and brackets. Still on factory brakes? You'll need a different specification, so confirm your exact kit before ordering.
What the swap changes and what to check
| STOPFLEX feature | Why it matters on the Cayenne 9YA | What you notice |
|---|---|---|
| Carbon ceramic rotor, about half the steel weight | The Cayenne is heavy and fast, so big steel discs pile on unsprung and rotating mass right where it hurts handling most. | Quicker turn-in, less heaviness over rough pavement, suspension that settles faster. |
| Long-fiber CCB heat tolerance | A steel BBK still soaks up heat on long descents and repeated hard stops; that's where fade creeps in. | More consistent pedal under sustained load. STOPFLEX holds around 0.3μ surface friction even at 900°C in testing. |
| Low-dust STOPFLEX pad pairing | Aggressive steel-BBK pads coat big premium wheels in dust and leave rust film after rain. | Far less dust, no rust film after a wash, wheels that stay presentable between drives. |
| Crackle-texture ceramic coating | On a Cayenne of this caliber, the brake hardware is on display behind open-spoke wheels. | A distinctive, reflective rotor face that pairs cleanly with the polished Alcon caliper. |
What gets better
- Less unsprung and rotating mass than the same-size steel rotors
- Better heat stability on long grades and back-to-back stops
- Very low brake dust with STOPFLEX pads
- No rust film after rain or washing
- Keeps your existing Alcon calipers and bracketry
What to confirm first
- Which calipers are on the car now, front and rear
- Current rotor diameter and thickness, both axles
- Hat offset and annulus depth against the existing brackets
- The right STOPFLEX pad compound for your street use
- A correct bedding procedure for stable feel from the first drive
If you're not sure your Cayenne matches the spec shown here, send us your current brake details and we'll confirm Cayenne 9YA fitment before you order through our Porsche CCB collection.
Build gallery
Cayenne 9YA CCB upgrade FAQ
Can I keep my Alcon big brake kit and just switch to STOPFLEX carbon ceramic rotors?
In most cases, yes. This is a rotor conversion for Cayennes already running a compatible aftermarket big brake kit. The Alcon calipers and bracketry stay; the steel discs are replaced with matched STOPFLEX carbon ceramic rotors once diameter, thickness, hat offset, and annulus depth are confirmed.
What does a Cayenne owner actually feel after the carbon ceramic swap?
The first thing most owners notice is less heaviness at each corner. A STOPFLEX rotor weighs roughly half what the same-size steel disc does, so turn-in feels quicker and the ride settles faster over rough pavement. Heat stability under repeated braking improves too.
Do carbon ceramic rotors really cut brake dust on the Cayenne's big wheels?
Yes. Paired with STOPFLEX pads, dust drops sharply compared with many aggressive steel-BBK pad compounds. The rotors also won't leave a rust film after rain or a wash, so large wheels stay clean and presentable between drives.
Will this hold up to daily driving, long descents, and heavy street use?
It's built for road-driven Cayennes, including ones that work hard on the street. Carbon ceramic rotors shed heat well on long grades and repeated stops, holding around 0.3μ friction even at 900°C in testing. Match the final setup to your kit and use case before ordering.
Does this swap require new calipers?
No. This upgrade reuses your existing aftermarket calipers and only replaces the steel rotor rings with STOPFLEX carbon ceramic rotors, as long as the rotor dimensions and mounting details match.
