2021-2026+ Mercedes-Benz S-Class / AMG (W223/V223) Carbon Ceramic Big Brake Kit — Brembo AMG 6-Piston
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 2021-2026+ Mercedes-Benz S-Class / AMG (W223/V223). This page's exact brake setup:
| Model Years | Front Setup | Rear Setup | Min. Wheel Size |
|---|---|---|---|
| 2021-2026+ | OEM AMG 6-Piston Caliper / 400/420mm | OEM AMG EPB Single-Piston Caliper / 380mm | 20" |
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 400 mm rotor sets the minimum wheel size at 20" — 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 | OEM AMG 6-Piston Caliper OE / Part No.: L 205-421-69-98 · R 205-421-70-98 |
| Front CCB rotors | 400/420mm |
| Rear calipers | OEM AMG EPB Single-Piston Caliper OE / Part No.: L 231-423-03-81 · R 231-423-04-81 |
| Rear CCB rotors | 380mm |
| CCB brake pads | Matched ceramic-compatible compound for the supplied StopFlex carbon ceramic rotors |
| 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
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.
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.
Winter & Cold-Weather Braking
Cold facts first: an untuned ceramic disc bites less than iron on a freezing morning — physics, not a defect. StopFlex tuned both the pad compound and the disc's ceramic coating for cold starts, so winter cold-car braking now feels very close to summer. Leave extra margin on the very coldest first stops; severe-climate daily drivers should build Street Spec.
Caliper Overview
Front Caliper
The front uses the OEM AMG 6-piston caliper, machined for the carbon-ceramic rotor and hat offset of your confirmed trim. Six pistons spread clamping load evenly across the pad, so pedal feel stays consistent from the first stop through repeated hard braking on a car this heavy.
Rear Caliper
The rear runs the OEM AMG EPB single-piston caliper, which retains the factory electronic parking brake function while adding rear carbon-ceramic thermal capacity for balanced heat management under load.
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
High rotor temperature tolerance does not mean heat management disappears. Under repeated hard braking, heat migrates into the pads, brake fluid, seals, calipers, and wheels even when the ceramic disc itself is comfortable. Plan brake cooling and high-temperature fluid for extended track sessions, long mountain descents, or sustained aggressive driving.
Get Your Fitment Confirmed
Send the exact vehicle details, current rotor sizes, and caliper type before ordering. Every StopFlex order is confirmed against your VIN-level configuration before production.
FAQ
Will this kit bolt onto my exact S-Class or is it built for the platform?
Every kit is engineered for your confirmed trim, not the W223/V223 platform as a whole. An S63 AMG can carry different front knuckles, hub geometry, and wheel clearance than an S500 or S580, so we cut brackets and set rotor-hat offsets specifically for your car. We confirm VIN and trim before machining—there is no universal bolt-on claim here.
How do carbon-ceramic brakes behave on a cold winter morning?
A cold, untuned carbon-ceramic disc bites less than cold iron on the first stops—that is physics, not a fault. We tuned both the pad compound and the disc's ceramic coating for cold starts, so winter cold-car feel now comes very close to summer feel. On the coldest first stops, leaving a little extra following distance is still smart until the system reaches temperature.
What wheel size do I need to clear these rotors?
The front rotor is 400 or 420mm depending on your build, so 20-inch wheels are the minimum. Anything under 20 inches will not clear the caliper and disc, and spoke design also matters—some 20-inch wheels have inner spokes that foul a 6-piston caliper. Send us your wheel details and we will verify clearance before you order.
Does this fix the overnight rust shudder I get on my current iron rotors?
Yes. Iron rotors flash-rust overnight in humid weather, which causes the gritty first-stop shudder and noise you feel each morning. Carbon-ceramic discs do not corrode that way, so you lose the morning surface rust and the shudder that comes with it, while also dropping significant unsprung weight over the factory iron setup.
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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