2021-2026+ Mercedes-Benz S-Class / AMG (W223/V223) Carbon Ceramic Big Brake Kit — Akebono 10N Audi RS 10-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+ | Akebono OEM Audi RS 10-Piston (10N) Caliper / 420mm | Brembo OEM Porsche 19Z 4-Piston Caliper / 410mm | 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 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 Audi RS 10-Piston (10N) Caliper OE / Part No.: L 4M8615107A · R 4M8615108A |
| Front CCB rotors | 420mm |
| 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 | 410mm |
| 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
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.
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.
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 runs the Akebono OEM Audi RS 10-piston (10N) caliper over a 420mm carbon-ceramic rotor. Ten pistons spread clamp load evenly across a long pad, so the pedal on this heavy W223 stays firm and repeatable from cold city stops through sustained highway braking.
Rear Caliper
The rear uses the Brembo OEM Porsche 19Z 4-piston caliper on a 410mm disc, adding real thermal capacity behind the axle where the S-Class carries a lot of its weight. It's engineered to work with the factory electronic parking brake.
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
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 actually fit my exact S-Class, or is it a generic W223 kit?
It's built for your confirmed trim, not the platform in general. An S580 and an S63 AMG can differ at the front knuckle, hub geometry, and wheel clearance, so we set the brackets, rotor-hat offsets, and caliper mounting to your specific car before anything ships. We confirm your VIN and trim first rather than assuming one bolt pattern covers every W223.
How do these brakes behave on a cold winter morning?
A cold carbon-ceramic disc naturally bites a little less than cold iron on the first stop or two—that's physics, not a fault. We've tuned both the pad compound and the disc's ceramic coating for cold starts, so first-stop feel on a winter morning now comes very close to summer feel. On the coldest days, leave a bit more following distance for the first couple of stops and the system comes up to temperature quickly.
Does the kit work with the electronic parking brake on my W223?
Yes. The W223 uses a factory electromechanical parking brake at the rear, and the Brembo 19Z rear caliper is set up to retain that function. The EPB, hill hold, and Auto Hold all continue to operate normally.
What wheels do I need to clear the 420mm front rotor?
The front rotor measures 420mm, so you need a minimum 21-inch wheel—anything under 21 inches will not clear it. Spoke shape matters too, since the 10-piston caliper is physically large. Send us your wheel spec and we'll verify clearance before you buy.
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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