The build: calipers, rotors, pads
| Item | STOPFLEX build spec |
|---|---|
| Vehicle | Porsche 911 Carrera S (992) |
| Front axle | Akebono 10-piston caliper + 420mm STOPFLEX carbon ceramic rotor |
| Rear axle | Brembo 4-piston caliper + 410mm STOPFLEX carbon ceramic rotor |
| Pads | STOPFLEX low-dust street pads |
| Rotor construction | Long-fiber carbon ceramic with crackle-texture ceramic coating |
| Wheel requirement | 20-inch minimum, clearance still to be verified |
| Build type | Custom big brake configuration, both axles |
Fitment first: this is not a universal 992 kit. The 420mm front and 410mm rear rotors need 20-inch wheels as a starting point, and final fit still has to be confirmed against your wheel's barrel shape, spoke profile, and offset. Diameter alone doesn't guarantee caliper clearance.
Why this setup works on a 992
| STOPFLEX feature | Why it matters on this 911 | What you notice |
|---|---|---|
| 420mm front rotor + 10-piston Akebono caliper | The front axle does most of the stopping on a tuned 992. More pad length and a bigger rotor spread the clamping load. | Firmer pedal from the first bit of travel, less of that soft, gliding feel at speed. |
| Carbon ceramic friction at high heat | Repeated hard stops cook conventional iron hardware. STOPFLEX holds around 0.3μ surface friction even at 900°C. | Pedal feel that stays consistent stop after stop on a fast back road. |
| Rotor weight about half of steel | Rotors are unsprung and rotating mass, so cutting weight there pays off twice. | Sharper turn-in and a calmer ride over rough pavement. |
| Low-dust pads, no-rust rotors | A street 911 sees rain and daily miles, where iron setups stain wheels and surface-rust fast. | Cleaner wheel faces between washes and rotors that don't bloom orange after a wet week. |
| Long-fiber CCB construction | Long-fiber, not chopped, helps the disc stay stable through the deep heat cycles a quick street car puts in. | Confident cold bite too, normal feel on the first stop even near -20°C. |
What gets better
- Stronger, more immediate initial bite at high speed
- Consistent pedal feel through repeated heavy braking
- Less unsprung weight for sharper steering response
- Very low brake dust with STOPFLEX pads
- Rotors that shrug off rain instead of rusting
What to confirm first
- 20-inch wheels as the starting point, then real clearance check
- Wheel barrel shape, spoke profile, and offset against the caliper
- Front and rear caliper packaging on your exact car
- Pad and axle balance dialed in for street use
If you're not sure your 911 matches the spec shown here, send us your wheel and build details and we'll confirm Porsche 911 Carrera S (992) fitment before you order through our Porsche CCB collection.
Build gallery
FAQ
Why run a 10-piston front caliper on a 992 Carrera S?
On this tuned 992, the owner wanted firmer initial bite and steadier pedal feel at high speed. A 10-piston front caliper spreads clamping force across a longer pad and a 420mm rotor, which suits the heavy braking load the front axle carries on a powered-up 911.
Why pair Akebono front calipers with Brembo rear calipers?
This is a custom big brake build, not an off-the-shelf kit. The Akebono front caliper was matched to the front axle's braking demand, and the Brembo rear caliper handles the rear balance and packaging this specific 992 setup needed.
Will this package clear any 20-inch wheel?
No. The 420mm front and 410mm rear rotors need 20-inch wheels as a starting point, but diameter alone does not confirm fit. Barrel shape, spoke profile, and offset still have to be checked against the caliper for your exact wheel.
How much brake dust does this setup make?
With STOPFLEX pads, dust stays very low next to typical performance brakes. Your wheel faces stay cleaner between washes than they would with conventional iron rotor and pad combinations.
How long do STOPFLEX carbon ceramic rotors last on a street 992?
On the street, STOPFLEX carbon ceramic rotors can last far longer than steel, with roughly 250,000 to 300,000 km possible when the car is not tracked. Real-world life depends on how you drive, how you use the car, and maintenance.
