2003-2012 Mercedes-Benz SL-Class / AMG (R230) Carbon Ceramic Big Brake Kit — Alcon RC6 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 2003-2012 Mercedes-Benz SL-Class / AMG (R230). This page's exact brake setup:
| Model Years | Front Setup | Rear Setup | Min. Wheel Size |
|---|---|---|---|
| 2003-2012 | Alcon RC6 6-Piston Caliper / 380mm | Alcon RC4 4-Piston Caliper / 380mm | 19" |
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 380 mm rotor sets the minimum wheel size at 19" — 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 | Alcon RC6 6-Piston Caliper OE / Part No.: L CAR7059Y04HZLT · R CAR7059Y04HZRT |
| Front CCB rotors | 380mm |
| Rear calipers | Alcon RC4 4-Piston Caliper OE / Part No.: L CAR6959B08HZLL · R CAR6959B08HZRT |
| 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
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
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 Alcon RC6, a 6-piston fixed monobloc that clamps the 380mm carbon-ceramic front rotor. On a heavy SL that carries real speed, its stiffness keeps pedal travel short and consistent lap after lap or on a long mountain descent.
Rear Caliper
The rear runs the Alcon RC4, a 4-piston fixed caliper on a 380mm carbon-ceramic rotor, adding rear thermal capacity so the front axle isn't doing all the work under repeated hard stops. Cable parking brake operation is retained through the rear hat.
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
Share your year, model, trim, wheel size, current rotor dimensions, and caliper type — every order is verified against your VIN-level configuration before it goes to production.
FAQ
Is this a true bolt-on kit, or will I have to cut dust shields or fabricate brackets?
You won't fabricate anything. Every kit is engineered for your confirmed R230 trim: the brackets, rotor-hat offsets, and Alcon RC6 front mounting are cut for your exact car. We don't assume the whole SL family is identical, because AMG variants like the SL55, SL63, and SL65 can differ from a base SL in knuckle and hub geometry. Confirm your VIN and trim and the parts arrive matched to your specific car.
Will these 380mm rotors clear my wheels?
The front and rear rotors are both 380mm, so you need a minimum 19-inch wheel, and the spoke design has to clear the Alcon caliper body, not just the diameter. Many R230 AMG cars already run 19s or larger. Send us your wheel specs and we'll verify clearance before anything ships.
How do carbon-ceramic brakes behave in winter cold?
An untuned carbon-ceramic disc bites less than cold iron on the first stops of a cold morning — that's normal physics, not a fault. We've 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 sees some heat.
Why go carbon ceramic on an AMG SL instead of larger iron rotors?
The SL55, SL63, and SL65 carry serious mass and power, and iron rotors of this size add significant unsprung and rotating weight. Carbon-ceramic rotors cut that weight, resist fade under repeated hard stops, and shed the brake dust that coats the wheels of a heavy fast car. The pad is a carbon-ceramic-specific low-metallic compound with a friction coefficient near 0.44 and heat resistance to about 750 °C.
More Contact Information
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