2014-2019 Porsche 911 (991) Targa / S / GTS Carbon Ceramic Brake Rotors
Official Warranty: 1‑year free replacement for quality defects or coating issues under normal (non-track) use.
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Will This Fit My Car?
Direct Replacement CCB Discs (Retain Factory Calipers) for the 2014-2019 Porsche 911 (991) Targa / S / GTS. Factory rotor specifications and the smallest wheel that clears each trim:
| Trim | Front Rotor (Factory) | Rear Rotor (Factory) | Min. Wheel Size |
|---|---|---|---|
| Targa 4 | 330mm | 330mm | 17" |
| 4S/4 GTS | 340mm or 350mm | 330mm or 350mm | 18" |
| PCCB | 350mm or 410mm by MY/package | 350mm or 390mm by MY/package | 21" |
Keep Your Factory Calipers?
Yes — if your front factory calipers are fixed 4-piston or more. The rear axle has no restriction. Cars with 1- or 2-piston floating front calipers should use the Full Upgrade kit (calipers + discs) instead. Discs are built to the factory rotor specs shown above; if you run aftermarket calipers (Brembo, AP Racing, Alcon, Wilwood), we simply confirm the caliper model, pad shape, and rotor dimensions before production.
Spoke profile and offset also affect clearance — confirm your exact wheels before ordering.
What's in the Box
| Item | Details |
|---|---|
| Product type | Direct Replacement CCB Discs (Retain Factory Calipers) |
| CCB rotors | Full-car set by default, built to the factory rotor specification |
| CCB brake pads | Matched ceramic-compatible compound 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; custom rotor hat colors available for every Direct Replacement order. |
| Stainless floating hardware | Full-car hardware set |
| Order scope | Default listing is full-car set. Front-only or rear-only orders can be arranged after confirmation. |
Why Carbon Ceramic — and Why StopFlex
Long Street-Service Life
In normal road use with matched pads and correct bedding, one StopFlex CCB rotor set is engineered to outlast several sets of iron replacement rotors, recovering part of the up-front cost.
Low Visible Dust
Matched with StopFlex pads, the system sheds a fraction of the dust an iron rotor and pad combination throws. Wheels stay clean for weeks of driving instead of days.
Premium Ceramic-Glaze Finish
StopFlex's proprietary coating gives the disc a bright ceramic-glaze surface with subtle texture — the factory carbon-ceramic look, clearly visible through open wheel designs.
Continuous Fiber Construction
StopFlex discs are built with long continuous carbon fiber instead of chopped short fiber. Continuous strands carry load across the whole rotor body, raising strength and thermal durability under heat cycles.
Bespoke Per-Vehicle Engineering
Every order is machined to the confirmed vehicle and trim. Brackets, hat offsets, and pad shapes are built for that exact car — never pulled from a one-size-fits-all catalog.
CCB-Specific Pad Compound
A low-metallic resin pad compound reinforced with steel, copper, and aramid fiber, made for ceramic discs: stable to about 750 °C, roughly 0.44 average friction, strong fade resistance, low rotor wear.
Lower Unsprung Mass
A carbon-ceramic rotor weighs roughly half of the equivalent iron disc. Less rotating, unsprung mass lets the suspension follow broken pavement more cleanly and makes steering response noticeably sharper.
High-Temperature Stability
The carbon-silicon-carbide friction matrix keeps working at temperatures that push iron rotors into heavy fade, so the tenth hard stop feels like the first — same pedal travel, same bite point.
Rust-Free Rotor Surface
Ceramic discs cannot flash-rust. After rain, a wash, or weeks of parking, the rotor face behind your open-spoke wheels stays clean — no orange ring on a freshly detailed car.
Winter & Cold-Weather Braking
Winter question, straight answer: untuned ceramic discs bite less when cold. StopFlex optimized the pad compound and the rotor's ceramic coating for cold operation, so cold-start braking in winter feels very close to warm-weather braking. Extra following distance on freezing first stops is still smart; severe-winter daily cars should run Street Spec.
Choose Your Rotor: Street, Track-Day, or Motorsport
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.
Heat Management Note
High rotor temperature tolerance does not mean heat management disappears. Under repeated hard braking, heat migrates into the pads, brake fluid, seals, calipers, and wheels even when the ceramic disc itself is comfortable. Plan brake cooling and high-temperature fluid for extended track sessions, long mountain descents, or sustained aggressive driving.
Get Your Fitment Confirmed
Share your year, model, trim, wheel size, current rotor dimensions, and caliper type — every order is verified against your VIN-level configuration before it goes to production.
FAQ
Will these fit my exact 991 Targa, Targa 4S, or GTS?
This page covers the 991 Targa 4 (330mm front/rear), Targa 4S and 4 GTS (340mm or 350mm front, 330mm or 350mm rear), and PCCB cars (350mm or 410mm front, 350mm or 390mm rear by model year and package). Because rotor diameters shifted with package and year, confirm your exact front and rear sizes before ordering. This is a Direct Replacement kit that reuses your factory calipers, so your front calipers must be 4-piston or more — every 991 front caliper on these trims qualifies. Rear caliper piston count is unrestricted.
Does the factory pad-wear warning still work?
Yes. This kit ships with brake pad wear sensors that are fully compatible with the 991's OEM wear-sensor system. Your dashboard pad-wear warning keeps functioning exactly as it did from the factory, with no error codes or spurious warning lights on the instrument cluster.
How do these behave in winter and on cold mornings?
Honest answer: any carbon-ceramic disc that hasn't been tuned bites less than cold iron on the very first stop — that's normal physics, not a fault. We addressed it on two fronts. The pad compound is a carbon-ceramic-specific low-metallic resin composite (steel, copper, aramid fiber, average coefficient around 0.44), and the disc's ceramic coating is optimized for cold starts. The result is cold-car braking feel that comes very close to summer feel. On the coldest first stops of the day, leaving a little extra following distance is still smart until the system is up to temperature.
Why is this so much less than a Porsche PCCB replacement quote?
A full four-corner OEM PCCB replacement on a 991 at a dealer commonly lands between $20,000 and $35,000 depending on model, year, and whether pads are done at the same time. This kit is a Direct Replacement: carbon-ceramic rotors, pads, hats, and floating hardware that bolt to your existing factory calipers. You keep the calipers you already have and replace only the worn consumables, which is what drives the cost difference.
More Contact Information
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