The build: what's on this 992
| Component | Specification |
|---|---|
| Vehicle | Porsche 911 (992) |
| Front calipers | Brembo GT8 8-piston |
| Rear calipers | Brembo GT4 4-piston |
| Front & rear rotors | 380mm STOPFLEX carbon ceramic |
| Pads | STOPFLEX carbon-ceramic-specific compound, front and rear |
| Rotor hats | Aluminum, machined to Brembo GT offset and swept depth |
| Wheel target | 19-inch clearance, front and rear |
| Axle scope | Full front and rear carbon ceramic conversion |
Read this before you order
The whole point of the 380mm rotor here is 19-inch wheel clearance. Go bigger on the disc and you're usually forced into 20- or 21-inch wheels. Caliper profile, hat offset, pad choice, and wheel clearance all have to be matched to your exact car and how you drive it, so this should be quoted as a complete system, never as parts picked by diameter alone.
Why this setup works, and what to check
| STOPFLEX feature | Why it matters on a 992 | What you notice |
|---|---|---|
| 380mm rotor sized for 19-inch wheels | A big factory-style PCCB package tends to lock the car into 20- or 21-inch wheels; the compact disc keeps 19s on the table | More track tire choices, cheaper rubber, and a taller sidewall over curbs |
| Rotor about half the weight of steel | The 992 carries real pace into corners, and rotating mass at the wheel hurts response more than mass anywhere else | Lighter steering, quicker turn-in, less work for the dampers |
| Compact Brembo GT8 front / GT4 rear calipers | Smaller, lighter calipers are what actually make the 19-inch fit work alongside the rotor | Strong, even bite without bulky hardware crowding the wheel |
| Carbon ceramic heat tolerance | Iron rotors start to give up over repeated track sessions on a car this quick | At 900°C tested surface friction still holds around 0.3μ, so the pedal stays consistent late in a session |
| No rust, very low dust with STOPFLEX pads | A 911 that sits between track days or lives outside shouldn't pay for it in corroded discs and filthy wheels | Clean wheel faces and rotors that look the same after a wet week |
| Long-fiber CCB construction | Street-driven life is long when the car isn't tracked, so the package isn't a consumable | Roughly 250,000–300,000 km of street use, and normal first-stop bite even near -20°C |
What gets better
- 19-inch wheel and tire options stay open for track work
- Lower unsprung and rotating mass at every corner
- Consistent pedal deep into repeated stops
- No rotor rust after rain or winter storage
- Very low brake dust on the wheel faces
- Long street life when the car isn't tracked
What to confirm first
- Your exact 992 variant and current brake setup
- Wheel diameter and inner-barrel clearance over the GT8 caliper
- Front and rear caliper choice matched as a balanced system
- Rotor hat offset and swept depth for your hubs
- How you actually use the car: street, mixed, or regular track days
If you're not sure your car matches the spec shown here, send us your details and we'll confirm Porsche 911 (992) fitment before you order through our Porsche CCB collection.
Build gallery
Porsche 911 992 CCB questions
Why run 380mm rotors on a 992 instead of bigger factory-style discs?
The 380mm rotor is sized to clear 19-inch wheels. If you track the 992, 19-inch tires are usually cheaper, come in more compounds, and give you a taller sidewall for better compliance over curbs than many 20- or 21-inch setups.
Is the Brembo GT8 caliper better than the OEM 10-piston PCCB caliper?
For outright stopping power the two are closely matched in this kind of build. The GT8's real edge is that it's lighter and more compact, which is what makes 19-inch wheel fitment work where the bulkier OEM 10-piston package limits wheel choice.
Do STOPFLEX carbon ceramic rotors fit Brembo GT calipers?
Yes. For this 992 application the aluminum rotor hats are machined to the offset and swept depth the Brembo GT system needs, so the rotor package lines up correctly with the calipers.
Will STOPFLEX carbon ceramic rotors rust if the 992 is parked outside?
No. STOPFLEX carbon ceramic rotors don't rust after rain exposure, which makes them a clean long-term choice for a 911 that lives outdoors or sits between track days.
How much weight does the STOPFLEX rotor save versus a steel rotor?
STOPFLEX carbon ceramic rotors are about half the weight of a same-size steel rotor. On a 992 that's a real cut in unsprung and rotating mass at every corner.
