Mercedes-Benz AMG SLK55 / SLC43 (R172) Carbon Ceramic Brakes Kit
Official Warranty: 1‑year free replacement for quality defects or coating issues under normal (non-track) use.
2012-2020 Mercedes-Benz AMG SLK55 / SLC43 (R172) Carbon Ceramic Brake Kits
The R172 AMG roadster is a compact, rear-drive two-seater that mixes short-wheelbase agility with genuine AMG pace in SLK55 V8 and later SLC43 biturbo V6 form. Buyers usually want sharper braking without making this small open-top car feel grabby or awkward in normal street use.
- Body style: Roadster
- Front rotor reference: SLK55/SLC43: 360mm
- Rear rotor reference: SLK55/SLC43: 330mm
This is an OEM-size replacement kit. The rotors are built to the factory rotor spec and install with the factory caliper when the front caliper is a fixed design and the rotor spec matches. The included pad shape matches the OEM pad shape. If the car uses aftermarket calipers such as Brembo, AP Racing, Alcon, or Wilwood, provide the exact caliper model and StopFlex can supply the matching pad shape. Direct replacement is not confirmed if the front caliper is floating, or if the car already runs a non-OEM-offset rotor and the actual rotor dimensions cannot be supplied.
Why StopFlex CCB
Lightweight
Half the Weight, Sharper Handling. StopFlex carbon-ceramic rotors shed roughly half the mass of equivalent iron discs. This massive drop in unsprung weight instantly transforms your chassis, delivering sharper turn-in response and a significantly more refined road feel.
High-Temp Resistance
Minimal Brake Fade at 900°C (1652°F). While traditional iron rotors severely fade under heavy track loads, our CCB matrix holds a stable 0.30μ friction coefficient even at 900°C (1652°F). You get consistent, predictable stopping power when things get dangerously hot.
Corrosion Resistance
100% Rust-Free Durability. Say goodbye to flash rust after a car wash or heavy rain. The carbon-silicon carbide material is naturally impervious to corrosion, ensuring your brake rotors look completely clean and pristine no matter the weather conditions.
Long Lifespan
250,000+ km (155,000+ mi) Lifespan. Iron rotors typically require replacement around 100,000 km (62,000 mi). In normal street driving conditions, a StopFlex CCB rotor can easily last 250,000 to 300,000 km (155,000 to 186,000 mi), effectively outlasting the vehicle itself.
Ultra-Low Dust
Ultra-Low Visible Brake Dust. Heavy black dust destroying your wheel finish is a thing of the past. When paired with our matched StopFlex pads, these rotors generate virtually zero visible brake dust, keeping your premium wheels spotless for much longer.
Premium Visual Finish
Premium Mirror-Like Finish. StopFlex utilizes a patented ceramic formula that cures with a distinct crackle pattern. The surface is machined dead-smooth for high reflectivity, providing a premium aesthetic behind open wheels under the right lighting.
High Normal-Temp Friction
Strong Initial Bite (0.40μ+). With matched StopFlex pads, normal-temperature friction can exceed 0.40μ for a firmer pedal feel and strong initial bite.
Long-Fiber Construction
Continuous Long-Fiber Strength. StopFlex utilizes a continuous long-fiber 3D matrix. This structure is significantly stronger and offers higher thermal conductivity than standard chopped-fiber OEM CCM discs.
Cold First-Stop Confidence
Reliable Cold-Bite at -20°C (-4°F). Coated street rotors still deliver normal first-stop braking at -20°C (-4°F). Uncoated motorsport rotors are the exception.
Important heat note
Carbon ceramic does not shed heat as fast as steel. Long hard driving can heat-soak the rest of the brake system, including fluid, seals, and nearby parts. Unless the car already has strong brake cooling, or you plan to upgrade brake cooling, prolonged aggressive driving is not recommended.
Rotor options
Street Spec
Ceramic coating + cross-drilled face + large cooling channels.
Stay with the row’s 360mm front and 330mm rear package for the cleanest street-focused upgrade on SLK55/SLC43.
Track-Day Spec
Ceramic coating + blank face + honeycomb cooling channels.
Choose the 360/330 setup with the more heat-tolerant overall configuration if your R172 sees fast canyon runs or occasional track days.
Motorsport Spec
No coating + blank face + honeycomb cooling channels. Not for normal street use.
For sustained hard lapping, use the 360/330 fitment only if the rest of the brake system, cooling, and consumables are selected around that duty cycle.
Pads
| Item | Details |
|---|---|
| Pad shape | The included StopFlex pad shape matches the OEM pad shape used by the retained caliper. |
| Aftermarket calipers | Provide the exact caliper model and StopFlex can supply the matching pad shape. |
| Pad details | For compound details and pad-specific parameters, see the StopFlex Ceramic Brake Pad for CCB Rotor product page. |
What’s included
| Item | Included |
|---|---|
| CCB rotors | Full-car set |
| CCB brake pads | Full-car set |
| 7075 aluminum floating rotor hats | Full-car set |
| Stainless floating hardware | Full-car set |
| Order scope | Default listing includes front set + rear set. Front-only or rear-only can be ordered separately. |
FAQ
Will a StopFlex carbon ceramic brake kit for the Mercedes-Benz AMG SLK55 / SLC43 (R172) fit my factory AMG calipers, or do I need different calipers?
That depends on the exact kit version, because some R172 buyers want a rotor upgrade with the stock AMG calipers while others are matching an aftermarket caliper package. For this chassis, confirm your exact caliper type and mounting hardware first, especially if the car has been modified before.
What is the correct StopFlex carbon ceramic brake kit size for my Mercedes-Benz AMG SLK55 / SLC43 (R172)?
For this vehicle row, the reference setup is 360mm front and 330mm rear. If your car still matches the standard AMG brake layout, that is the safe starting point; if not, measure the current system before ordering.
Is a StopFlex carbon ceramic brake kit a good choice for daily street use on the Mercedes-Benz AMG SLK55 / SLC43 (R172), including cold first stops?
Yes, if your priority is a lighter, cleaner-feeling street upgrade and you still want the car to feel natural in normal driving. If you are very sensitive to first-stop feel on short local trips, choose the most street-biased setup rather than the most aggressive one.
Do I need extra cooling or other changes when upgrading my Mercedes-Benz AMG SLK55 / SLC43 (R172) to a StopFlex carbon ceramic brake kit for hard driving?
For normal road use, usually no major cooling changes are the first priority. For repeated hard laps or long downhill runs, heat management still matters on the R172, so fluid, pad choice, and airflow should be planned with the kit.
Need fitment confirmation?
Send the exact vehicle details and current brake setup before ordering.
More Contact Information
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