2022-2026+ Mercedes-Benz SL-Class / AMG (R232) 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 2022-2026+ Mercedes-Benz SL-Class / AMG (R232). This page's exact brake setup:
| Model Years | Front Setup | Rear Setup | Min. Wheel Size |
|---|---|---|---|
| 2022-2026+ | OEM AMG 6-Piston Caliper / 390mm | OEM AMG EPB Single-Piston Caliper / 380mm | 20" |
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 390 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 | 390mm |
| 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
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 runs the OEM AMG 6-Piston Caliper over a 390mm carbon-ceramic rotor, giving even pad loading and a firm, repeatable pedal on this heavy 2+ ton roadster. It's genuine AMG hardware, so clamping and pressure balance match what Mercedes engineered for the R232.
Rear Caliper
The rear uses the OEM AMG EPB Single-Piston Caliper on a 380mm rotor, which keeps the factory electronic parking brake fully functional while adding carbon-ceramic thermal capacity out back. No workaround modules or aftermarket EPB substitutes.
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
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 carbon ceramic brakes work in winter and cold weather?
An untuned carbon-ceramic disc bites a little softer than cold iron when it's below freezing — that's normal physics, not a fault. We've tuned both the low-metallic resin pad compound and the disc's ceramic coating for cold starts, so first-stop feel on a cold R232 now sits very close to summer feel. Still leave a little extra following distance on the first couple of stops on the coldest mornings.
Is this kit a bolt-on for any R232, or is it matched to my specific AMG trim?
Every kit is engineered for your confirmed trim — SL43, SL55, SL63, or SL63 S. The front knuckles, hub geometry, and wheel ET clearance can differ between these variants, so we cut the brackets and set the rotor-hat offsets for your exact car. We do not make a platform-wide bolt-on claim across all R232 SLs.
Does the kit keep my factory electronic parking brake?
Yes. The rear uses the OEM AMG EPB Single-Piston Caliper over a 380mm carbon-ceramic rotor, so the R232's electronic parking brake works exactly as it did from the factory — no bypass module and no manual conversion.
What wheels do I need to clear these brakes?
The front rotor is 390mm, which requires a minimum 20-inch wheel. Under 20 inches will not clear the caliper and rotor, and spoke geometry matters too, so send us your wheel details during fitment so we can confirm clearance before we build.
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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