2019-2026+ Porsche Cayenne (9Y0) GTS Carbon Ceramic Big Brake Kit — Akebono Porsche 10N
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?
Full Upgrade CCB Big Brake Kits (With Calipers) for the 2019-2026+ Porsche Cayenne (9Y0) GTS. This page's exact brake setup:
| Model Years | Front Setup | Rear Setup | Min. Wheel Size |
|---|---|---|---|
| 2019-2026+ | Akebono OEM Porsche 10-Piston (10N) Caliper / 420/440mm | Brembo OEM Porsche 19Z 4-Piston Caliper / 410/380mm | 21" |
Every StopFlex kit is bespoke-engineered for your exact model and trim — brackets, rotor-hat offsets, and caliper mounting are matched to your specific car, never assumed from the platform. Trims that share a chassis name can differ mechanically: a pure performance variant often carries different knuckles, hub geometry, and wheel ET clearance than the standard models, so parts that bolt onto one are not the parts that fit the other. Calipers, pads, rotor hats, floating hardware, and brake lines ship as one matched system built to your confirmed trim. Modified knuckles, uprights, or non-factory suspension mounting points must be reviewed 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 | Akebono OEM Porsche 10-Piston (10N) Caliper OE / Part No.: L 9Y0-615-123-AS · R 9Y0-615-124-AS |
| Front CCB rotors | 420/440mm |
| Rear calipers | Brembo OEM Porsche 19Z 4-Piston Caliper OE / Part No.: L 9Y0-615-423-AC · R 9Y0-615-424-AC |
| Rear CCB rotors | 410/380mm |
| 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
Every StopFlex kit order can be finished with custom caliper colors, a custom caliper logo, and custom rotor hat colors — the brake package matches your exact build, not a fixed off-the-shelf look.
- Custom caliper color
- Custom caliper logo
- Custom rotor hat color
Why Carbon Ceramic — and Why StopFlex
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.
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.
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 Akebono OEM Porsche 10-Piston (10N) Caliper, a factory-grade monobloc that clamps the 420/440mm carbon-ceramic disc with even, consistent pressure across all ten pistons. That piston count keeps pad pressure uniform for a firm, repeatable pedal on a 2+ ton GTS.
Rear Caliper
The rear pairs the Brembo OEM Porsche 19Z 4-Piston Caliper with a 410/380mm carbon-ceramic disc, adding real rear thermal capacity for repeated high-speed stops. It retains the factory electronic parking brake function.
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
Ceramic discs shrug off surface temperatures that would destroy iron, but the rest of the system still heats up: pads, fluid, seals, calipers, and wheels all absorb soak heat during repeated hard stops. For track days, long descents, and sustained hard driving, run brake cooling and high-temperature fluid.
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 this kit fit my exact Cayenne GTS?
This kit is bespoke-engineered for the confirmed 9Y0 GTS trim, not assumed from the Cayenne platform. Brackets, rotor-hat offsets, and caliper mounting are matched to your car's front knuckles, hub geometry, and wheel ET. We do not make a platform-wide bolt-on claim, because GTS uprights and clearances can differ from other Cayenne variants. Send your VIN and we confirm fit before anything ships.
What wheel size do I need to clear these rotors?
The largest front disc in this kit is 420mm, so 21-inch wheels are the minimum. Wheels under 21 inches will not clear the front caliper and rotor. Spoke design also matters, so confirm both diameter and inner-spoke clearance before ordering.
How do these carbon-ceramic brakes behave in winter and cold starts?
An untuned cold carbon-ceramic disc bites less than cold iron on the first stops—that's normal physics, not a defect. We addressed it by optimizing both the pad compound and the disc's ceramic coating for cold operation, so cold-car braking feel on the GTS comes very close to summer feel. On the coldest first stops, still leave a little extra following distance until everything is up to temperature.
Will the factory pad-wear warning and parking brake still work?
Yes. The kit includes brake pad wear sensors that are fully compatible with the OEM Porsche wear-sensor system, so the dashboard warning keeps working with no error codes. The rear Brembo 19Z retains the factory electromechanical parking brake, so the EPB engages and releases exactly as before.
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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