2015-2019 Porsche 911 (991) Carrera GTS Carbon Ceramic Brake Kit
Official Warranty: 1‑year free replacement for quality defects or coating issues under normal (non-track) use.
2015-2019 Porsche 911 (991) Carrera GTS Carbon Ceramic Brake Kit — OEM-Size Replacement
The 2015-2019 911 Carrera GTS and Carrera 4 GTS use different brake packages across 991.1, 991.2, iron, and PCCB cars, so this OEM-replacement StopFlex kit is built only around the exact 340/350 mm front and 330/350 mm rear GTS references, or the 350/410 mm front and 350/390 mm rear PCCB references listed for this page. Carbon-ceramic rotors reduce rotating unsprung mass, cut visible brake dust on open GTS wheels, and keep heat capacity consistent when the car is driven hard on canyon roads or track days. The kit includes matched carbon-ceramic rotors, pads, hats, and floating hardware so the factory caliper layout and Porsche pad-wear warning system remain part of the install.
- Covers 991 Carrera GTS and Carrera 4 GTS coupe/cabriolet fitments only when the car matches the listed 340/350 mm front and 330/350 mm rear iron-size references or the listed PCCB-size references.
- Engineered as an OEM-size replacement for the factory 6-piston front and 4-piston rear fixed-caliper GTS brake layout, not as a generic big-brake conversion.
- Supplied with Porsche-compatible pad wear sensors so the 991 factory pad-wear warning remains active without dashboard errors after installation.
Fitment Hard Lines
| Field | Specification |
|---|---|
| Vehicle | Porsche 911 (991) Carrera GTS |
| Model years | 2015-2019 |
| Front rotor reference | GTS/4 GTS: 340mm or 350mm; PCCB: 350mm or 410mm by MY/package |
| Rear rotor reference | GTS/4 GTS: 330mm or 350mm; PCCB: 350mm or 390mm by MY/package |
| Page type | OEM-size carbon ceramic replacement |
| Minimum wheel size | 18" (for the 340 mm rotor) |
For OEM replacement orders, StopFlex builds around the factory rotor specification shown for this vehicle. Front floating-caliper setups require manual review before production. If the car uses aftermarket calipers such as Brembo, AP Racing, Alcon, or Wilwood, the order can still be built, but the exact caliper model, pad shape, and rotor dimensions must be confirmed before production.
This setup uses a 340 mm rotor, so the minimum wheel size is 18". Wheels under 18" will not clear the caliper and rotor, and spoke profile and offset affect clearance too — confirm your exact wheels before ordering.
Why StopFlex CCB
Lower Unsprung Mass
StopFlex carbon-ceramic rotors are engineered to reduce rotor mass versus comparable iron discs, helping the suspension react cleaner and the steering feel more precise.
High-Temperature Stability
The carbon-silicon-carbide matrix is built for stable braking behavior at temperatures that can push iron rotors into heavy fade.
Rust-Free Rotor Surface
Carbon ceramic does not form orange flash rust after rain, washing, or storage, keeping the visible rotor face cleaner behind open wheels.
Long Street-Service Potential
In normal road use with matched pads and proper bedding, StopFlex CCB rotors are designed for far longer service life than typical iron replacement rotors.
Low Visible Dust
When paired with matched StopFlex pads, the system produces very low visible brake dust compared with conventional iron rotor and pad combinations.
Premium Ceramic-Glaze Appearance
StopFlex's proprietary coating creates a bright, high-end ceramic-glaze finish with subtle glaze texture and a more premium visual character behind open wheels.
Street-Usable Cold Bite
Street Spec and Track-Day Spec rotors are designed for normal first-stop road use, including cold-weather operation. Motorsport Spec is the competition-focused exception.
Continuous Fiber Reinforcement
Long-fiber carbon ceramic construction improves structural strength and thermal durability versus chopped-fiber approaches.
Custom Rotor Hat Color
Every StopFlex OEM replacement order can be built with a custom rotor hat color, giving the carbon ceramic rotor package a cleaner match with the wheel, body color, and overall build style.
Heat Management Note
Carbon ceramic rotors tolerate extreme surface temperature, but they do not remove every heat-management requirement. During repeated hard stops, heat can still soak into pads, fluid, seals, calipers, wheels, and nearby components. For long track sessions, mountain descents, or sustained aggressive driving, brake cooling and high-temperature fluid are still recommended.
Street / Track-Day / Motorsport Rotor Options
Street Spec
Ceramic coating, cross-drilled face, and large cooling channels.
Best for daily driving and premium street builds that need clean cold bite, low dust, corrosion-free appearance, and long service life.
Track-Day Spec
Ceramic coating, blank face, and honeycomb cooling channels.
Best for fast-road and track-day use where repeated braking stability matters more than maximum visual drilling style.
Motorsport Spec
Uncoated blank face with honeycomb cooling channels.
Best for race-focused builds that run competition pads, high-temperature fluid, cooling strategy, and a proper warm-up window. Not the default street choice.
Package Scope
| Item | Details |
|---|---|
| CCB rotors | Full-car set by default |
| CCB brake pads | Matched for StopFlex carbon ceramic rotors |
| Brake pad wear sensors | Included; 100% compatible with the OEM wear-sensor system. |
| 7075 aluminum floating rotor hats | Vehicle-specific fitment |
| Stainless floating hardware | Full-car hardware set |
| Rotor hat color | Custom rotor hat colors are available for every OEM replacement order. |
| Order scope | Default listing is full-car set. Front-only or rear-only orders can be arranged after confirmation. |
FAQ
Will this kit fit every 2015-2019 991 Carrera GTS?
No. The 991 GTS family used different rotor sizes by model year, drivetrain, and brake package. Confirm your current front and rear rotor diameters before ordering: this page is limited to the listed 340/350 mm front and 330/350 mm rear GTS references, or the listed 350/410 mm front and 350/390 mm rear PCCB references.
Does the factory electronic parking brake still work?
Yes. This is an OEM-size replacement kit for the original 991 GTS brake configuration, so the rear hardware is built to retain the factory parking-brake function rather than deleting it for a race-only rear rotor setup.
Why replace the factory iron or cracked PCCB rotors with StopFlex carbon ceramic?
Owners usually move to carbon ceramic on the 991 GTS to reduce brake dust, lower rotating unsprung weight, and keep pedal feel more stable under repeated high-temperature stops. For PCCB-equipped cars, StopFlex also gives a complete rotor-and-pad replacement path when dealer carbon-ceramic parts are cracked or near wear limit.
What should I confirm before placing the order?
Verify trim, model year, rear- or all-wheel drive, current rotor diameters, brake package, and wheel clearance. A 991.1 GTS with 340/330 mm iron brakes is not the same order as a 991.2-style 350 mm front setup or a PCCB car using 410/390 mm rotors.
Need Fitment Confirmation?
Send the exact vehicle details, current rotor sizes, and caliper type before ordering.
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