The Porsche 992 market has split into two camps regarding brake upgrades. One group pursues the factory "top tier" look, installing the massive OEM 10-piston PCCB calipers. It's a great setup, but it locks you into 20/21-inch wheels. The other group—the drivers who value playability and tire choices—opts for the aftermarket route: Brembo GT8 (8-Piston) calipers paired with StopFlex Carbon Ceramics. Why? Because this setup allows for 19-inch wheels, unlocking a world of track tire options while keeping costs rational.
The Enthusiast's Dilemma: 10-Piston vs. 8-Piston
Bigger isn't always better; sometimes bigger is just heavier.
- The OEM 10-Piston Route: Impressive visual impact and massive pad volume, but requires 410mm+ rotors. This forces you to run large diameter wheels, increasing rotational mass at the worst possible place (the outer rim).
- The Brembo GT8 Route (This Build): The 8-piston caliper is physically more compact. By pairing it with a 380mm StopFlex CCB rotor, we maintain immense clamping force but gain wheel clearance. This is the "driver's choice" for agility.
Build Spec: 19-Inch Track Fitment
This build is designed for versatility. It fits standard street wheels but is optimized for smaller, lighter track wheelsets.
| Vehicle Platform | Porsche 911 (992 Chassis) |
|---|---|
| Front Hardware | Brembo GT8 (8-Piston) + 380mm StopFlex CCB |
| Rear Hardware | Brembo GT4 (4-Piston) + 380mm StopFlex CCB |
| Target Fitment | 19-inch Wheels (Track/Winter Capable) |
| Pad Compound | StopFlex High-Performance Ceramic |
⚠️ Wheel Clearance Advantage
The primary engineering advantage of this 380mm kit is fitment. Unlike the 410mm/420mm OEM PCCB kits that require 20-inch or 21-inch wheels, this system allows you to downsize to 19-inch wheels. This is critical for owners looking to run specific tire compounds (like slicks or winter tires) that are not available in larger sizes.
Why Downsize to Upgrade?
It sounds counter-intuitive to "shrink" a brake rotor, but in this context, it's a performance gain.
1. Mass Centrelization
A 380mm carbon rotor is significantly lighter than a 410mm unit. By moving the mass closer to the hub and reducing the caliper size, we reduce the moment of inertia ($I = mr^2$). The steering feels lighter and sharper.
2. Tire Sidewall
Running 19-inch wheels allows for a taller tire sidewall. On rough tracks or bumpy B-roads, that extra sidewall provides better compliance and mechanical grip than a rubber-band thin tire on a 21-inch wheel.
3. Cost Efficiency
The Brembo GT8 caliper is a workhorse. Brake pads for this caliper shape are widely available in various compounds from street to endurance racing, often at a fraction of the cost of OEM 10-piston pads.
Installation Gallery
Porsche 992 CCB FAQ
Q: Why choose 380mm rotors instead of 410mm?
The 380mm rotor is chosen specifically to fit inside 19-inch wheels. If you plan to track your car, 19-inch tires are often cheaper and offer more compound variety than 20/21-inch sizes.
Q: Is the Brembo GT8 better than the OEM 10-Piston caliper?
For pure stopping power, they are comparable. However, the Brembo GT8 is lighter and more compact. The OEM 10-piston caliper is extremely heavy and large, limiting your wheel choices.
Q: Do StopFlex rotors work with Brembo GT calipers?
Yes. We custom machine the rotor hats (bells) to match the specific offset and bolt pattern of the Brembo GT braking systems, ensuring a plug-and-play installation.
