Porsche Cayenne Coupe 9Y3 Brake Configuration
| Build item | Installed configuration |
|---|---|
| Vehicle | Porsche Cayenne Coupe (9Y3) |
| Upgrade scope | Full front and rear STOPFLEX CCB brake conversion |
| Front brakes | Brembo BM8 eight-piston calipers with 420 mm STOPFLEX CCB rotors |
| Rear brakes | Brembo BM4 four-piston calipers with 400 mm STOPFLEX CCB rotors |
| Brake pads | STOPFLEX high-performance ceramic brake pads |
| Wheel fitted | 21-inch wheel |
| Installation hardware | Mounting bolts and fasteners |
Fitment check: A 21-inch wheel diameter alone does not guarantee clearance; the wheel barrel, spoke profile, caliper position, hub dimensions, and mounting hardware must be checked against the exact vehicle before ordering.
What This CCB Upgrade Changes
| STOPFLEX feature | Why it matters on this Cayenne | What you notice |
|---|---|---|
| 420 mm front and 400 mm rear CCB rotors | The Cayenne Coupe asks its brakes to manage substantial vehicle mass during high-speed stops, long descents, and repeated braking. | More thermal headroom and more repeatable brake response as heat builds. |
| Brembo BM8 front and BM4 rear fixed calipers | The eight-piston front and four-piston rear layouts spread pad pressure across large friction surfaces while giving each axle dedicated hardware. | More controlled modulation and more even pad contact during firm braking. |
| STOPFLEX long-fiber CCB construction | CCB rotors are about half the weight of same-size iron rotors, reducing unsprung and rotating mass at each corner. | Less inertia at the wheel and a quicker suspension response over direction changes and uneven pavement. |
| Silicon-carbide friction surface | The coated surface is built to retain friction under high temperature while resisting wear, thermal shock, and rain-related corrosion. | More consistent braking during repeated high-load use and no iron rust film after wet weather. |
| Honeycomb ventilation structure | Internal airflow helps move heat away from the rotor instead of allowing it to accumulate through successive stops. | Slower heat buildup during mountain driving, highway braking, and repeated hard stops. |
| Matched STOPFLEX ceramic pads | The rotor and pad operate as one friction system, so pad selection directly affects bite, wear, dust, noise, and temperature behavior. | Very low brake dust, cleaner 21-inch wheels, and predictable response after correct bedding. |
What gets better
- Greater resistance to brake fade during repeated high-energy stops
- Lower unsprung and rotating mass than comparable iron rotors
- More consistent braking through long downhill sections
- Very low brake dust with the matched STOPFLEX pads
- Rotor surfaces that do not develop iron rust after rain or washing
- A complete front-and-rear conversion instead of a front-only visual upgrade
What to confirm first
- The exact Cayenne Coupe 9Y3 year, variant, hub, and caliper mounting points
- Wheel-barrel and spoke clearance around the BM8 front caliper
- Front and rear rotor dimensions match the 420 mm and 400 mm configuration
- The installation plan includes suitable brake fluid and a complete bleeding procedure
- STOPFLEX pads are used and bedded according to the supplied procedure
- Inspection and service intervals match the intended street or track use
If you're not sure your car matches the specification shown here, send us your vehicle and wheel details and we'll confirm Porsche Cayenne Coupe 9Y3 fitment before you order through our Porsche CCB collection.
Build Gallery
Porsche Cayenne Coupe 9Y3 CCB FAQ
What is included in this Cayenne Coupe 9Y3 brake build?
The build uses Brembo BM8 eight-piston front calipers with 420 mm STOPFLEX CCB rotors, Brembo BM4 four-piston rear calipers with 400 mm STOPFLEX CCB rotors, STOPFLEX ceramic pads, and installation fasteners.
Will this setup fit every 21-inch wheel?
No. This case was fitted with 21-inch wheels, but wheel-barrel diameter and spoke shape still determine caliper clearance. Confirm the exact wheel and vehicle before ordering.
Why use CCB rotors on a Porsche Cayenne Coupe?
Compared with same-size iron rotors, STOPFLEX CCB rotors reduce unsprung and rotating mass, tolerate repeated heat better, resist rust, and produce very low dust with matched STOPFLEX pads.
Can this brake setup be used on the street and track?
The hardware suits fast street driving, long descents, and repeated high-load braking. Track use still requires the correct pad, fluid, bedding, inspection, and service plan.
Do I need to use the matched STOPFLEX pads?
Yes. The rotor and pad must operate as a matched friction pair. Pad choice directly affects bite, noise, dust, wear, and temperature behavior.
