2003-2012 Mercedes-Benz SL-Class / AMG (R230) Carbon Ceramic Big Brake Kit — AP Racing CP9560 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 | AP Racing CP9560 Radi-CAL II 6-Piston Caliper / 380mm | AP Racing CP9541 Radi-CAL II 4-Piston Caliper / 380mm | 19" |
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 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 | AP Racing CP9560 Radi-CAL II 6-Piston Caliper OE / Part No.: L CP9560-2SOBG4 · R CP9560-3SOBG4 |
| Front CCB rotors | 380mm |
| Rear calipers | AP Racing CP9541 Radi-CAL II 4-Piston Caliper OE / Part No.: L CP9541-2SOR12 · R CP9541-3SOR12 |
| 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
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 AP Racing CP9560 Radi-CAL II 6-piston caliper, a stiff monobloc that keeps pad taper and pedal feel consistent as the 380mm rotor heats up on the heavy R230.
Rear Caliper
The rear runs the AP Racing CP9541 Radi-CAL II 4-piston caliper on a matched 380mm rotor, adding rear thermal capacity so the fronts aren't doing all the work in repeated hard stops.
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
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
Will this fit my SL if I don't have an AMG model?
It depends on your exact trim. An SL550 and an SL65 AMG share the R230 name but can differ at the front knuckle, hub geometry, and wheel clearance, so we don't treat this as a one-size platform kit. We build the brackets, rotor-hat offsets, and caliper mounting to your confirmed trim before anything ships.
What wheels do I need to clear the 380mm rotors?
The 380mm front rotor with the CP9560 6-piston caliper requires a minimum 19-inch wheel. Spoke shape matters too, not just diameter, so send us your wheel details and we'll check clearance against your build before we confirm the order.
How do these brakes behave in winter and cold starts?
Cold carbon-ceramic naturally bites a little less than cold iron on the very first stops—that's physics, not a fault. We've tuned both the pad compound and the disc's ceramic coating for cold-start friction, so cold-car feel now comes very close to warm summer feel. On the coldest first stops, leaving a bit of extra following distance is still smart until the discs come up a few degrees.
What does the kit include and what are the pads made of?
Every order is the full setup: front AP Racing CP9560 6-piston and rear CP9541 4-piston calipers, carbon-ceramic rotors, pads, custom hats, mounting hardware, and braided lines. The pads are a carbon-ceramic-specific low-metallic resin composite with steel, copper, and aramid fiber, averaging about 0.44 friction coefficient with heat resistance to roughly 750 °C for strong anti-fade behavior.
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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