2012-2019 Porsche 911 (991) Carrera / S Carbon Ceramic Brake Rotors — Direct Replacement
Official Warranty: We offer a 1-year free replacement for quality defects or coating issues under normal (non-track) use. Please note that provided specs apply strictly to brake hats and brackets; wheel fitment data is for general reference only. Wheel clearance issues are excluded from warranty coverage and data accuracy claims. If additional clearance is needed, wheel spacers must be added at the customer's discretion.
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Will This Fit My Car?
Direct Replacement CCB Discs (Retain Factory Calipers) for the 2012-2019 Porsche 911 (991) Carrera / S. Factory rotor specifications and the smallest wheel that clears each trim:
| Trim | Front Rotor (Factory) | Rear Rotor (Factory) | Min. Wheel Size |
|---|---|---|---|
| Carrera/4/T | 330mm | 17" | |
| S/4S | 340mm or 350mm | 330mm or 350mm | 18" |
| PCCB | 350mm or 410mm by MY/package | 350mm or 390mm by MY/package | 21" |
| Carrera/T | 330mm | 17" |
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 instead. The listed discs are built to the factory rotor specifications shown above. Aftermarket-caliper cars require a custom-fitment review of caliper model, pad shape, rotor dimensions and offset before a build is approved.
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 |
| Rotor construction | Short-Fiber Street Spec (lower price, street-only) or Long-Fiber Street / Track-Day / Motorsport Spec — chosen at order confirmation |
| Brake pad wear sensors | Included; specified for compatibility with the factory wear-sensor system, subject to final vehicle confirmation. |
| CCB brake pads | Matched ceramic-compatible compound for StopFlex carbon ceramic rotors |
| 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
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 like-size carbon-ceramic rotor can be materially lighter than an iron disc; the exact saving depends on rotor dimensions. Lower rotating, unsprung mass can reduce the load the suspension has to control.
High-Temperature Stability
The carbon-silicon-carbide friction material is selected for high-temperature stability and fade resistance. Overall pedal feel still depends on pad condition, fluid, caliper stiffness, cooling and operating temperature.
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.
Long Street-Service Life
In normal road use with matched pads and correct bedding, carbon-ceramic friction surfaces are designed for low wear. Actual service life depends on mileage, contamination, pad choice, heat cycles and driving use.
Low Visible Dust
Matched StopFlex pads are selected for low visible dust on the ceramic friction surface. Actual wheel dust still varies with pad choice, traffic, temperature, bedding and driving intensity.
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.
Short-Fiber or Long-Fiber — Your Call
Every StopFlex disc is true carbon-ceramic. Short-Fiber Street Spec uses a simpler chopped-fiber process for a lower price and street-only duty; the Long-Fiber line uses continuous carbon strands that carry load across the whole rotor for higher strength and thermal durability — the pick for track and race heat.
Winter & Cold-Weather Braking
Winter use is possible, but cold-start behavior should be treated honestly: ceramic friction can have less initial bite before temperature builds. StopFlex tunes the matched pad/coating combination for cold response; keep extra distance on the coldest first stops and select a Street Spec for severe climates.
Choose Your Rotor: Short-Fiber Street to Long-Fiber Motorsport
Four specs, one rule of thumb: all are real carbon-ceramic discs. Short-Fiber Street Spec is the lower-cost route for street-only driving. The three Long-Fiber specs use continuous carbon strands for higher strength and heat durability, and are the only choice for track-day or motorsport use.
Short-Fiber Street Spec
Chopped short-fiber carbon-ceramic body, ceramic coating, cross-drilled face.
Choose this for street-only use when purchase price matters most. It keeps the carbon-ceramic friction surface and coated finish, but it is not specified for track sessions.
Long-Fiber Street Spec
Continuous long-fiber body, ceramic coating, cross-drilled face, large cooling channels.
Choose this for daily and fast-road use when you want the long-fiber construction without moving to a track-focused face and cooling specification.
Long-Fiber Track-Day Spec
Continuous long-fiber body, ceramic coating, blank face, honeycomb cooling channels.
Choose this for repeated fast-road or track-day braking where thermal duty matters more than the drilled street appearance. High-temperature fluid and appropriate cooling still matter.
Long-Fiber Motorsport Spec
Continuous long-fiber body, uncoated blank face, honeycomb cooling channels.
Choose this for competition-focused use with the corresponding pad, fluid, cooling and warm-up strategy. It is not the default recommendation for a street-driven car.
Heat Management Note
Carbon ceramic rotors tolerate extreme surface temperature, but they do not remove every heat-management requirement. During repeated hard stops, heat still soaks 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.
Get Your Fitment Confirmed
Before ordering, provide the exact vehicle, current rotor sizes, caliper type, and wheel details. Production starts only after the configuration is confirmed; VIN/build data is requested when it is needed to resolve fitment.
FAQ
Which 2012-2019 Porsche 911 (991) configurations does this Direct Replacement set cover?
This listing is limited to 2012-2019 Porsche 911 (991) Carrera / S applications using the supplied factory rotor configurations: front 330 mm Carrera/4/T, 340 or 350 mm S/4S, and PCCB 350 or 410 mm; rear 330 mm Carrera/T, 330 or 350 mm S/4S, and PCCB 350 or 390 mm. Front calipers must be fixed four-piston or larger.
Do I keep the factory calipers on my 991?
Yes. This is a Direct Replacement CCB-disc configuration, so the factory calipers remain on the car. StopFlex supplies carbon-ceramic rotors, matched pads, vehicle-specific rotor hats, floating hardware, and brake-pad wear sensors specified as compatible with the OEM wear-sensor system. The front calipers must be fixed four-piston or larger; the rear axle has no caliper restriction.
Which StopFlex rotor spec should I choose for my 911?
Choose Short-Fiber Street Spec only for street use and a lower-cost option. Long-Fiber Street uses the long-fiber construction for street duty, while Long-Fiber Track-Day and Motorsport suit progressively higher heat and duty requirements. Select for how the car is used, then confirm that the selected front or rear rotor matches the factory diameter reference for your 991.
What should I expect from carbon-ceramic brakes in winter or on cold first stops?
An untuned cold carbon-ceramic disc can have less initial bite than cold iron. StopFlex specifies a matched pad compound and disc coating to reduce that cold-start gap, but the coldest first stops still deserve extra margin. Do not expect identical summer and winter response before the brakes have some temperature in them.
More Contact Information
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