2015-2019 Porsche 911 Carrera GTS (991) CCB Big Brake Kit | Brembo OEM Porsche 911 Turbo S 10-Piston
Official Warranty: 1‑year free replacement for quality defects or coating issues under normal (non-track) use.
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2015-2019 Porsche 911 (991) Carrera GTS CCB Big Brake Kit — Genuine Brembo OEM Porsche 911 Turbo S 10-Piston Caliper Front + Genuine Brembo OEM Porsche 911 GT3 4-Piston Caliper Rear Setup
The 2015-2019 Porsche 911 Carrera GTS owner usually shops this kit to move beyond iron-rotor heat load, brake dust, and repeated track-day consumables without paying dealer pricing for OEM carbon-ceramic service parts. This StopFlex upgrade uses a 420mm front carbon-ceramic rotor with the Genuine Brembo OEM Porsche 911 Turbo S 10-Piston Caliper, paired with a 390mm rear carbon-ceramic rotor and Genuine Brembo OEM Porsche 911 GT3 4-Piston Caliper. The result is more thermal capacity at the front axle, lower rotating mass than comparable iron hardware, cleaner open wheels, and exact-trim fitment built around the confirmed 991 Carrera GTS rather than a generic 991 assumption.
- 420mm front carbon-ceramic rotors require 21 inch or larger wheels on the 991 Carrera GTS; barrel and spoke clearance are both checked before production.
- Front braking is built around the Genuine Brembo OEM Porsche 911 Turbo S 10-Piston Caliper, not an unbranded universal caliper.
- The kit retains Porsche pad-wear sensor functionality, so the factory pad-wear warning system remains active without dashboard errors.
Fitment Hard Lines
| Field | Specification |
|---|---|
| Vehicle | Porsche 911 (991) Carrera GTS |
| Model years | 2015-2019 |
| Front setup | Genuine Brembo OEM Porsche 911 Turbo S 10-Piston Caliper / 420mm |
| Rear setup | Genuine Brembo OEM Porsche 911 GT3 4-Piston Caliper / 390mm |
| Page type | Complete CCB kit upgrade |
| Minimum wheel size | 21" (for the 420 mm front rotor) |
Every StopFlex kit is bespoke-engineered for your exact model and trim — the brackets, rotor-hat offsets, and caliper mounting are matched to your specific car, not assumed from the platform. This matters because trims that share a chassis name can differ mechanically: a pure M or performance variant often carries different front knuckles/uprights, hub geometry, and wheel axial (ET) clearance than the standard models in the same family, so a bracket and hat offset that bolt onto one are not the same parts that fit the other. StopFlex supplies the calipers, pads, rotor hats, floating hardware, and brake lines as a matched system built to your confirmed trim. Cars with modified knuckles, modified uprights, or non-factory suspension mounting points must be reviewed before ordering and are not treated as direct-fit.
This setup uses a 420 mm front rotor, so the minimum wheel size is 21". Wheels under 21" will not clear the caliper and rotor, and spoke profile and offset affect clearance too — confirm your exact wheels before ordering.
| Wheel Size (Standard) | Disc Range |
|---|---|
| 15" | 260 mm – 285 mm |
| 16" | 285 mm – 300 mm |
| 17" | 300 mm – 330 mm |
| 18" | 330 mm – 355 mm |
| 19" | 355 mm – 380 mm |
| 20" | 380 mm – 400 mm |
| 21" | 400 mm – 420 mm |
| 22" | 420 mm – 440 mm |
Caliper Overview — Front & Rear Balance
Front Caliper (Primary Upgrade)
The front axle uses the Genuine Brembo OEM Porsche 911 Turbo S 10-Piston Caliper, giving the 991 Carrera GTS a large multi-piston clamp package matched to the 420mm carbon-ceramic rotor. Its OEM Porsche Turbo S provenance matters because the caliper architecture was developed for a high-output 911 application rather than adapted from a generic aftermarket casting. StopFlex engineers the caliper mount, rotor-hat offset, and hydraulic package around the customer's confirmed Carrera GTS configuration to preserve pedal feel and clearance.
Rear Caliper (Balance)
The rear axle uses the Genuine Brembo OEM Porsche 911 GT3 4-Piston Caliper with a 390mm carbon-ceramic rotor to keep rear brake contribution proportional to the larger front system. The rear package is engineered around the 991 electronic parking brake hardware and Porsche pad-wear sensor compatibility.
Front & rear, engineered together: A 420mm front-only conversion can move too much work to the nose if the rear axle is left mismatched. This kit pairs the Turbo S 10-piston front and GT3 4-piston rear hardware as a complete system so rotor diameter, pad area, caliper position, and rear stability are engineered together.
Make It Yours — Color & Logo Customization
Every StopFlex kit-upgrade order can be finished with custom caliper colors, a custom caliper logo, and custom rotor hat colors, so the brake package matches your exact build instead of a fixed off-the-shelf look.
- Custom caliper color
- Custom caliper logo
- Custom rotor hat color
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.
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 |
|---|---|
| Front calipers | Genuine Brembo OEM Porsche 911 Turbo S 10-Piston Caliper |
| Front CCB rotors | 420mm |
| Rear calipers | Genuine Brembo OEM Porsche 911 GT3 4-Piston Caliper |
| Rear CCB rotors | 390mm |
| CCB brake pads | Matched for the supplied StopFlex carbon ceramic rotors |
| Brake pad wear sensors | Included; 100% compatible with the OEM wear-sensor system. |
| Rotor hats and floating hardware | Vehicle-specific hardware package |
| Brake lines | Included for complete kit-upgrade orders |
| Color customization | Custom caliper colors, a custom caliper logo, and custom rotor hat colors are available for every kit-upgrade order. |
| Order scope | Default listing is full-car set when front and rear are specified. Front-only or rear-only orders can be arranged after confirmation. |
EPB & Rear Caliper Options
This vehicle leaves the factory with an electronic parking brake (EPB) built into the rear brake, so the rear of the kit is built to keep that EPB working. There are two rear paths. The first is a dual-caliper rear: a main performance caliper handles braking while a dedicated EPB actuator caliper is retained alongside it, so the electronic parking brake, auto-hold, and hill-start assist all keep working; on this path the rear performance caliper can be the TTSPORT EP4 / EP4S 4-piston caliper. The second is an EPB-integrated caliper, a single rear caliper with the electromechanical parking-brake motor built in for a cleaner install with fewer parts behind the wheel; on this path the rear is the TTSPORT EP4 / EP4S 4-piston caliper with integrated EPB. Which path fits best depends on your exact trim and EPB configuration, your budget, your appearance preference, and your wheel size and spoke clearance. Confirm your car's rear-brake configuration with StopFlex before ordering so the correct EPB-compatible rear option is built for your kit.
| Rear option | What it is | Rear caliper | Best when |
|---|---|---|---|
| Dual caliper (EPB retained) | Performance caliper plus a dedicated EPB actuator caliper, both fitted on the rear, so the factory electronic parking brake keeps working. | TTSPORT EP4 / EP4S 4-Piston Caliper | You want guaranteed factory EPB, auto-hold, and hill-start behavior preserved. |
| EPB-integrated caliper | A single rear caliper with the electromechanical parking-brake motor built in, for a cleaner install with fewer parts behind the wheel. | TTSPORT EP4 / EP4S 4-Piston Caliper with integrated EPB | You want a cleaner single-caliper rear with full EPB function. |
FAQ
Will this kit fit my exact 2015-2019 991 Carrera GTS?
Fitment is built for your confirmed car, not assumed from the 991 chassis name. StopFlex verifies the exact Carrera GTS variant, hub geometry, brake baseline, wheel data, and clearance before producing the brackets, rotor hats, offsets, lines, and caliper mounting hardware.
What wheel size is required for the 420mm front rotor?
The 420mm front rotor requires 21 inch or larger wheels. Wheels under 21 inches will not clear the rotor, and StopFlex also checks spoke clearance because the Genuine Brembo OEM Porsche 911 Turbo S 10-Piston Caliper needs lateral room inside the wheel.
Will the electronic parking brake and pad-wear warning still work?
Yes. The 991 Carrera GTS uses an electronic parking brake system, and this kit is engineered around the rear EPB hardware. The brake pad wear sensors are 100% compatible with the OEM Porsche wear-sensor system, so the factory pad-wear warning remains functional with no dashboard errors.
Why switch a Carrera GTS from iron brakes or OEM PCCB service parts to this carbon-ceramic kit?
Carbon-ceramic rotors reduce brake dust, cut rotating and unsprung mass versus comparable iron rotors, and tolerate repeated high-temperature use better than street iron hardware. For owners replacing worn or cracked OEM carbon-ceramic parts, this kit provides a complete caliper, rotor, pad, hat, hardware, and line package engineered to the exact car.
Need Fitment Confirmation?
Send the exact vehicle details, current rotor sizes, and caliper type before ordering.
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