Porsche 911 (991) Targa / S / GTS Brembo OEM Porsche 911 Turbo S 10-Piston Caliper with 420mm CCB carbon ceramic brake rotor
Brembo OEM Porsche 911 Turbo S 10-Piston Caliper 420mm CCB front brake kit for Porsche 911 (991) Targa / S / GTS
Porsche 911 (991) Targa / S / GTS Brembo OEM Porsche 911 GT3 4-Piston Caliper with 390mm CCB carbon ceramic rear brake rotor
Brembo OEM Porsche 911 GT3 4-Piston Caliper 390mm CCB carbon ceramic rear brake kit for Porsche 911 (991) Targa / S / GTS

2014-2019 Porsche 911 (991) Targa Carbon Ceramic Big Brake Kit — Brembo Porsche 911 Turbo S 10-Piston

Request a Custom Quote

To ensure 100% fitment accuracy, our brake kits are custom-configured for your specific vehicle. Please share your Year / Make / Model / Wheel Size / VIN with our specialists for a bespoke setup and pricing.

Official Warranty: 1‑year free replacement for quality defects or coating issues under normal (non-track) use.

We Ship Worldwide

StopFlex worldwide shipping carriers including DHL, FedEx, UPS, DPD, GLS, and SF Express.
About the Disc

Will This Fit My Car?

Full Upgrade CCB Big Brake Kits (With Calipers) for the 2014-2019 Porsche 911 (991) Targa. This page's exact brake setup:

Model Years Front Setup Rear Setup Min. Wheel Size
2014-2019 Brembo OEM Porsche 911 Turbo S 10-Piston Caliper / 420mm Brembo OEM Porsche 911 GT3 4-Piston Caliper / 390mm 21"

Fitment here is bespoke: brackets, hat offsets, and caliper mounting are engineered for your exact model and trim rather than copied across the platform. Two trims with the same chassis code can still differ in knuckles, hub geometry, and wheel ET clearance — which is why we confirm your trim first, then build the matched system of calipers, pads, rotor hats, floating hardware, and lines for it. Modified knuckles, uprights, or non-factory suspension points require review before ordering.

The 420 mm rotor sets the minimum wheel size at 21" — smaller wheels will not clear the caliper and rotor. Spoke profile and offset also affect clearance; 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

What's in the Box

Item Details
Product type Full Upgrade CCB Big Brake Kits (With Calipers)
Front calipers Brembo OEM Porsche 911 Turbo S 10-Piston Caliper
OE / Part No.: L 992-615-123S · R 992-615-124S
Front CCB rotors 420mm
Rear calipers Brembo OEM Porsche 911 GT3 4-Piston Caliper
OE / Part No.: L 9GT-615-423A · R 9GT-615-424A
Rear CCB rotors 390mm
CCB brake pads Matched ceramic-compatible compound 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
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.

Make It Yours — Color & Logo Customization

Any kit order can be personalized: custom caliper colors, a custom caliper logo, and custom rotor hat colors, so the hardware behind your wheels matches the rest of the build.

  • Custom caliper color
  • Custom caliper logo
  • Custom rotor hat color

Why Carbon Ceramic — and Why StopFlex

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.

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.

Winter & Cold-Weather Braking

A cold, untuned carbon-ceramic disc needs more pedal than iron on the first winter stops — normal material physics. StopFlex engineered the pad formula and disc coating specifically for cold starts, closing that gap: cold-car winter feel is now very close to summer feel. Keep a little extra distance on the coldest mornings; for harsh winters, choose Street Spec.

Caliper Overview

Front Caliper

The front uses the Brembo OEM Porsche 911 Turbo S 10-Piston Caliper clamping a 420mm carbon-ceramic rotor. Ten pistons spread pad load evenly for a firm, repeatable pedal even after repeated hard stops.

Rear Caliper

The rear runs the Brembo OEM Porsche 911 GT3 4-Piston Caliper on a 390mm rotor, adding rear thermal capacity to balance the front bite. Your Targa's factory parking brake function is retained on the rear corner.

Choose Your Rotor: Street, Track-Day, or Motorsport

StopFlex Street Spec carbon ceramic brake rotor

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.

StopFlex Track-Day Spec carbon ceramic brake rotor

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.

StopFlex Motorsport Spec carbon ceramic brake rotor

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

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, tell us the exact vehicle, current rotor sizes, and caliper type. Nothing goes to production until the build is confirmed against your VIN-level configuration.

FAQ

Will these brakes work in cold winter weather?

A cold carbon-ceramic disc naturally bites a little less than cold iron on the very first stop; that is physics, not a fault. StopFlex tunes both the pad compound and the disc's ceramic coating for cold starts, so once you are moving, winter feel on your 991 Targa comes very close to summer feel. Leave a bit of extra following distance on the coldest first stops and you're set.

Is this kit really built for my exact Targa trim?

Yes. We engineer brackets, rotor-hat offsets, and caliper mounting for your confirmed trim, whether it's a Targa 4, 4S, or GTS. We do not assume platform-wide fit, because knuckle geometry, hub offsets, and wheel clearance can differ between 991 variants. Send us your VIN and we confirm the exact hardware before anything ships.

What wheels do I need to clear these brakes?

The front rotor is 420mm, so you need a minimum 21-inch wheel. Wheels under 21 inches will not clear the rotor and caliper, and spoke clearance also matters, so confirm your specific wheel fitment with us if you're unsure.

Will my dashboard pad-wear warning still work?

Yes. The kit includes brake pad wear sensors that are fully compatible with the 991's OEM wear-sensor system, so the factory pad-wear warning keeps functioning with no dashboard errors. Your electromechanical parking brake also stays intact through the GT3 rear caliper.

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More Contact Information

We’re here to help! Whether you need expert advice on brake setups, have questions about your order, or just want to share feedback, our team is ready to assist you. Reach out via your preferred channel below, or use the inquiry form.

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