Porsche 911 (991) GT2 RS Brembo OEM Porsche 911 GT3 6-Piston Caliper with 410mm CCB carbon ceramic brake rotor
Brembo OEM Porsche 911 GT3 6-Piston Caliper 410mm CCB carbon ceramic front brake kit for Porsche 911 (991) GT2 RS
Porsche 911 (991) GT2 RS 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) GT2 RS

2018-2019 Porsche 911 (991) GT2 RS Carbon Ceramic Big Brake Kit — Brembo Porsche 911 GT3 6-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 2018-2019 Porsche 911 (991) GT2 RS. This page's exact brake setup:

Model Years Front Setup Rear Setup Min. Wheel Size
2018-2019 Brembo OEM Porsche 911 GT3 6-Piston Caliper / 410mm Brembo OEM Porsche 911 GT3 4-Piston Caliper / 390mm 21"

This kit is built per car, not per platform. We engineer the brackets, rotor-hat offsets, and caliper mounting to your confirmed model and trim, because trims sharing a chassis name frequently differ underneath — performance variants can run different knuckles, hub geometry, and wheel ET clearance than their standard siblings. You receive calipers, pads, rotor hats, floating hardware, and brake lines as one matched, trim-specific system. Cars with modified knuckles, uprights, or non-factory suspension mounting points need review before ordering.

The 410 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 GT3 6-Piston Caliper
OE / Part No.: L 9GT-615-123A · R 9GT-615-124A
Front CCB rotors 410mm
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

Specify custom caliper colors, a custom caliper logo, and custom rotor hat colors on any kit order — the finished package matches your build instead of a standard catalog look.

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

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

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 caliper is the Brembo OEM Porsche 911 GT3 6-piston unit, matched to the 410mm carbon-ceramic front rotor. Six opposed pistons give even pad loading and a firm, repeatable pedal on the GT2 RS under hard, sustained braking.

Rear Caliper

The rear runs the Brembo OEM Porsche 911 GT3 4-piston caliper over a 390mm rotor, adding rear thermal capacity to balance the front on track. Rear bias and hardware are set for your confirmed GT2 RS spec.

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

How does this kit behave in winter or on a cold first stop?

Any carbon-ceramic disc bites less than cold iron on the first stops of a cold morning — that is normal physics, not a fault. We tune both the pad compound and the disc ceramic coating for cold starts, so cold-car feel on this GT2 RS comes very close to summer feel. Leave a little extra following distance on the first one or two stops until temperature comes up.

Will this fit my exact GT2 RS, or is it a general 991 kit?

Each kit is bespoke-engineered for the confirmed 2018-2019 GT2 RS. The GT2 RS uses front uprights, hub geometry, and wheel clearance that differ from lesser 991 trims, so we cut brackets and set rotor-hat offsets specifically for this car. We do not treat it as a platform-wide bolt-on.

What wheels do I need to clear the 410mm front rotor?

The 410mm front rotor requires a minimum 21-inch wheel; anything smaller will not clear it. Spoke clearance matters too, so send us your wheel details and we confirm fit before building the kit.

Will the factory pad-wear warning still work?

Yes. The kit includes pad wear sensors that are fully compatible with the Porsche OEM wear-sensor system, so your dash pad-wear warning keeps working with no error messages. The electronic parking brake in the rear calipers is also retained.

Request a Quote / Inquiry

* We respect your privacy. Your details are 100% secure and never shared.

* For WhatsApp messaging only. We never call or text.

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.

Get in Touch

WhatsApp

Messenger

sales@stopflex-ccb.com

Business Hours

Monday – Saturday, 9:30 AM – 6:30 PM (GMT +8)

Current Time:

Follow Us