Cayenne 9YA Build & Parts List
| Vehicle | Porsche Cayenne (9YA) |
|---|---|
| Front calipers (existing) | 10-piston big-brake calipers |
| Rear calipers (existing) | 4-piston big-brake calipers |
| STOPFLEX front rotors | Carbon ceramic, 420 × 40 mm |
| STOPFLEX rear rotors | Carbon ceramic, 380 × 28 mm |
| Pads | STOPFLEX street-spec carbon ceramic compound |
| Upgrade scope | Rotor replacement for a car already built around the 420 mm front big-brake format |
Confirm this before you order
This spec fits a Cayenne 9YA already running the 420 mm front big-brake package with 10-piston front and 4-piston rear calipers. If your truck has the standard iron brakes, the correct rotor spec is different. Caliper type, rotor size, and wheel clearance all need to be confirmed first.
Why Carbon Ceramic On This Cayenne
| STOPFLEX feature | Why it matters on a Cayenne 9YA | What you notice |
|---|---|---|
| Carbon ceramic rotor, about half the weight of steel | This is a two-tonne SUV with big rotors out front. Steel discs dump rotating and unsprung mass right where the chassis feels it most. | Lighter steering off-center and a front end that settles quicker over broken pavement. |
| Heat stability (around 0.3µ surface friction at 900°C) | Hauling that much weight down from speed, or down a long grade, loads the front brakes with heat that fades many steel systems. | A pedal that holds firm through repeated hard stops instead of going long and soft. |
| Low dust, no rust, with matched pads | Big steel rotors throw dust onto the wheels and surface-rust after a wet week parked. | Wheels that stay clean longer and rotor faces that don't streak orange after rain. |
| Long-fiber CCB construction | A heavy SUV cycles the brakes through big heat swings, which is hard on disc structure over time. | Rotors built to take repeated thermal cycling, with street life around 250,000–300,000 km away from track use. |
What gets better
- Less unsprung and rotating mass at the front axle, so the air suspension works against less weight
- Firmer, more repeatable pedal on long descents and repeated high-speed stops
- Very low brake dust and no surface rust when paired with STOPFLEX pads
- Normal cold bite on the first stop, even down around −20°C
- Long street service life, roughly 250,000–300,000 km outside track use
What to confirm first
- That your Cayenne already runs the 420 mm front big-brake format, not the standard iron setup
- Front 10-piston and rear 4-piston caliper hardware matches this application
- Wheel and spoke clearance against the rotor and caliper, even on 21-inch wheels
- Pad choice matched to how you actually drive, street versus heavy mountain use
If you're not sure your truck matches the spec shown here, send us your details and we'll confirm Porsche Cayenne 9YA fitment before you order through our Porsche CCB collection.
Build Gallery
Porsche Cayenne 9YA Carbon Ceramic Brake FAQ
I already run a big steel brake kit. Will I actually feel the carbon ceramic change?
Usually, yes. On a heavy SUV, large steel rotors pile on rotating and unsprung mass. Going to carbon ceramic rotors can make the steering feel lighter, sharpen suspension response over rough roads, and cut the dead weight feel big steel discs add at the front.
Is this a full brake kit or a rotor upgrade for an existing big-brake setup?
This is a rotor upgrade for a Cayenne 9YA already running the 420 mm front big-brake format with 10-piston front and 4-piston rear calipers. If your car has the standard iron brakes, the correct rotor spec will be different, so confirm your setup first.
Will it clear 21-inch wheels?
A 420 mm setup is commonly run under 21-inch wheels, but diameter alone does not confirm fitment. Spoke shape and caliper clearance still need to be checked against your exact wheels before ordering.
Do carbon ceramic brakes squeal in normal street driving?
Not necessarily. With matched street pads and a proper bed-in, a carbon ceramic setup can stay well-mannered day to day. Noise still depends on pad choice, install quality, and conditions.
How long can STOPFLEX carbon ceramic rotors last on the street?
In normal street use, away from repeated track abuse, STOPFLEX carbon ceramic rotors can reach roughly 250,000 to 300,000 km. Real-world life depends on driving style, pad choice, and how the vehicle is used.
