The build: calipers, rotors, wheels
| Item | Specification |
|---|---|
| Vehicle | Porsche 911 Targa 4 (992) |
| Front calipers | Genuine 992 GT3 6-piston calipers |
| Rear calipers | Genuine 992 GT3 4-piston calipers |
| Front rotors | 410 mm STOPFLEX carbon ceramic rotors |
| Rear rotors | 390 mm STOPFLEX carbon ceramic rotors |
| Pads | Carbon-ceramic-compatible compound |
| Wheels shown | 20/21-inch Carrera Exclusive |
| Rotor weight | About half the mass of same-size steel rotors |
Read this before you order
This is a GT3-caliper conversion, not a bolt-on rotor swap for the factory Targa 4 calipers. It needs the right calipers, rotor hats, and mounting hardware to match. Confirm your exact parts strategy first so the 410 mm front and 390 mm rear rotors line up with the calipers and your 20/21-inch wheels.
What changes on a 992 Targa 4
| STOPFLEX feature | Why it matters on a 992 Targa 4 | What you notice |
|---|---|---|
| Carbon ceramic rotors ~50% lighter than steel | The Targa 4 carries more hardware and weight than a base Carrera, and that mass sits partly at the wheel. | Less unsprung mass, so the front end settles faster and steering feels cleaner off-center. |
| 410 mm front rotor with GT3 6-piston caliper | The front axle does the heavy lifting under braking, more so when AWD shifts torque forward. | A bigger heat reserve and steadier pedal during repeated hard stops on a fast road. |
| Very low dust with STOPFLEX pads | Big Porsche wheels show iron dust badly, and a Targa tends to be a car people keep clean. | Wheels stay clean far longer between washes. |
| Rotors that don't rust | An open-top car parked outside or washed often will rust-stain iron discs fast. | No orange staining behind the spokes after rain or a wash. |
| Long-fiber CCB construction | Street-driven Porsches need durability, not just one-lap heat numbers. | Street life can reach roughly 250,000 to 300,000 km when the car isn't tracked. |
What gets better
- Lower unsprung and rotational mass at all four corners.
- Cleaner wheels from very low brake dust with STOPFLEX pads.
- No rust staining on the rotors after rain or a wash.
- More heat margin and a steadier pedal on hard road drives.
- GT3 caliper and ceramic rotor look that fills the 20/21-inch wheels.
What to confirm first
- That you're going with genuine 992 GT3 calipers front and rear.
- Rotor-to-wheel clearance with your 20/21-inch Carrera Exclusive wheels.
- Correct rotor hats and mounting hardware for the GT3 caliper setup.
- Rear electronic parking brake compatibility for your exact car.
- A street-focused pad choice for low dust and low noise.
If you're not sure your car matches the spec shown here, send us your details and we'll confirm Porsche 911 Targa 4 (992) fitment before you order through our Porsche CCB collection.
Build gallery
FAQ
Can you fit GT3 brakes on a Porsche 911 Targa 4 (992)?
Yes. This build runs genuine 992 GT3 calipers with a STOPFLEX carbon ceramic rotor package sized for the 992 platform. It is built around the GT3 calipers, not the standard Targa 4 calipers, so it needs the correct calipers, hats, and mounting hardware rather than a straight rotor swap.
What do you actually get on the street with this upgrade?
Lower unsprung weight from rotors about half the mass of steel, much cleaner wheels thanks to very low dust with STOPFLEX pads, rotors that do not rust after rain or a wash, and a bigger heat margin during hard road driving.
Will carbon ceramic brakes be noisy on a daily-driven Targa 4?
Noise comes down to pad compound, bedding, and how you drive. With a proper bed-in and street-focused STOPFLEX pads, the setup is built to stay quiet in normal road use.
How long do STOPFLEX carbon ceramic rotors last on the street?
On the street, with no track use, STOPFLEX carbon ceramic rotors can last roughly 250,000 to 300,000 km. Real-world life depends on how you drive, your pad choice, and maintenance.
Does the rear conversion keep the electronic parking brake?
The rear setup shown here is intended to retain electronic parking brake function. Always confirm final compatibility for your exact car configuration before ordering.
