2003-2012 Mercedes-Benz SL-Class / AMG (R230) CCB 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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2003-2012 Mercedes-Benz SL350 / SL500 / SL550 / SL600 / SL55 / SL63 / SL65 (R230) CCB Big Brake Kit — Genuine Alcon RC6 6-Piston Caliper Front + Genuine Alcon RC4 4-Piston Caliper Rear Setup
The 2003-2012 R230 SL is a heavy, high-speed roadster, and SL55, SL63, SL600, and SL65 owners in particular can overwork conventional iron brakes during repeated fast-road or track braking. This StopFlex kit pairs 380mm carbon-ceramic rotors with Genuine Alcon RC6 6-Piston Caliper fronts and Genuine Alcon RC4 4-Piston Caliper rears to add heat capacity, reduce brake dust, and cut rotating mass at all four corners. Each kit is engineered to the confirmed SL350, SL500, SL550, SL600, SL55, SL63, or SL65 trim, with brackets, hat offsets, and caliper position matched to that exact car rather than assumed from the R230 chassis name.
- 380mm front and rear carbon-ceramic rotors require 19-inch or larger wheels on the R230 SL; spoke clearance is checked separately from wheel diameter.
- The front axle uses the exact Genuine Alcon RC6 6-Piston Caliper, giving the R230 SL a rigid six-piston front clamp package matched to the 380mm rotor diameter.
- R230 SL350, SL500, SL550, SL600, SL55, SL63, and SL65 builds are not treated as one platform fitment; brackets and rotor-hat offsets are specified after the exact trim and wheel package are confirmed.
Fitment Hard Lines
| Field | Specification |
|---|---|
| Vehicle | Mercedes-Benz SL350 / SL500 / SL550 / SL600 / SL55 / SL63 / SL65 (R230) |
| Model years | 2003-2012 |
| Front setup | Genuine Alcon RC6 6-Piston Caliper / 380mm |
| Rear setup | Genuine Alcon RC4 4-Piston Caliper / 380mm |
| Page type | Complete CCB kit upgrade |
| Minimum wheel size | 19" (for the 380 mm front rotor) |
Every StopFlex kit is bespoke-engineered for your exact model and trim — the brackets, rotor-hat offsets, and caliper mounting are matched to your specific car, not assumed from the platform. This matters because trims that share a chassis name can differ mechanically: a pure M or performance variant often carries different front knuckles/uprights, hub geometry, and wheel axial (ET) clearance than the standard models in the same family, so a bracket and hat offset that bolt onto one are not the same parts that fit the other. StopFlex supplies the calipers, pads, rotor hats, floating hardware, and brake lines as a matched system built to your confirmed trim. Cars with modified knuckles, modified uprights, or non-factory suspension mounting points must be reviewed before ordering and are not treated as direct-fit.
This setup uses a 380 mm front rotor, so the minimum wheel size is 19". Wheels under 19" will not clear the caliper and rotor, and spoke profile and offset affect clearance too — 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 |
Caliper Overview — Front & Rear Balance
Front Caliper (Primary Upgrade)
The front upgrade uses the Genuine Alcon RC6 6-Piston Caliper, a six-piston performance caliper that spreads clamping load across the pad for firmer pedal response and more even pressure on the 380mm carbon-ceramic rotor. Alcon is a recognized motorsport and performance brake manufacturer, and this genuine RC6 caliper gives the R230 SL a rigid, purpose-built front brake package rather than a cosmetic caliper swap. StopFlex positions the caliper with trim-specific brackets and rotor-hat offsets for the customer’s confirmed SL model.
Rear Caliper (Balance)
The rear axle uses the Genuine Alcon RC4 4-Piston Caliper with a 380mm carbon-ceramic rotor, so rear braking torque is matched to the front RC6 conversion instead of being left as an undersized factory rear setup. This helps maintain braking stability on the short-wheelbase, high-torque R230 SL during repeated high-speed stops.
Front & rear, engineered together: The RC6 front and RC4 rear package is engineered as a complete brake system, with rotor diameter, caliper position, pad choice, and hat offset matched together. That matters on the R230 SL because a front-only big brake change can alter bias, rear contribution, and ABS behavior if the rear axle is not considered.
Make It Yours — Color & Logo Customization
Every StopFlex kit-upgrade order can be finished with custom caliper colors, a custom caliper logo, and custom rotor hat colors, so the brake package matches your exact build instead of a fixed off-the-shelf look.
- Custom caliper color
- Custom caliper logo
- Custom rotor hat color
Why StopFlex CCB
Lower Unsprung Mass
StopFlex carbon-ceramic rotors are engineered to reduce rotor mass versus comparable iron discs, helping the suspension react cleaner and the steering feel more precise.
High-Temperature Stability
The carbon-silicon-carbide matrix is built for stable braking behavior at temperatures that can push iron rotors into heavy fade.
Rust-Free Rotor Surface
Carbon ceramic does not form orange flash rust after rain, washing, or storage, keeping the visible rotor face cleaner behind open wheels.
Long Street-Service Potential
In normal road use with matched pads and proper bedding, StopFlex CCB rotors are designed for far longer service life than typical iron replacement rotors.
Low Visible Dust
When paired with matched StopFlex pads, the system produces very low visible brake dust compared with conventional iron rotor and pad combinations.
Premium Ceramic-Glaze Appearance
StopFlex's proprietary coating creates a bright, high-end ceramic-glaze finish with subtle glaze texture and a more premium visual character behind open wheels.
Street-Usable Cold Bite
Street Spec and Track-Day Spec rotors are designed for normal first-stop road use, including cold-weather operation. Motorsport Spec is the competition-focused exception.
Continuous Fiber Reinforcement
Long-fiber carbon ceramic construction improves structural strength and thermal durability versus chopped-fiber approaches.
Heat Management Note
Carbon ceramic rotors tolerate extreme surface temperature, but they do not remove every heat-management requirement. During repeated hard stops, heat can still soak 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.
Street / Track-Day / Motorsport Rotor Options
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.
Package Scope
| Item | Details |
|---|---|
| Front calipers | Genuine Alcon RC6 6-Piston Caliper |
| Front CCB rotors | 380mm |
| Rear calipers | Genuine Alcon RC4 4-Piston Caliper |
| Rear CCB rotors | 380mm |
| CCB brake pads | Matched for the supplied StopFlex carbon ceramic rotors |
| Rotor hats and floating hardware | Vehicle-specific hardware package |
| Brake lines | Included for complete kit-upgrade orders |
| Color customization | Custom caliper colors, a custom caliper logo, and custom rotor hat colors are available for every kit-upgrade order. |
| 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. |
FAQ
Will this fit my exact R230 SL trim?
StopFlex does not treat the SL350, SL500, SL550, SL600, SL55, SL63, and SL65 as one universal fitment. The kit is built after confirming the exact year, trim, hub and knuckle package, wheel specifications, and required bracket and rotor-hat offsets.
What wheels do I need for the 380mm carbon-ceramic rotors?
The 380mm front and rear rotors require 19-inch or larger wheels. Wheel diameter alone is not enough; spoke shape, barrel profile, offset, and caliper face clearance must also be checked against the Genuine Alcon RC6 front caliper and RC4 rear caliper.
Does this kit keep the factory parking brake?
The R230 SL does not use an electronic parking brake, so there is no EPB motor to retain or code. StopFlex verifies the rear parking-brake configuration during the build so the mechanical parking-brake function is addressed correctly for the customer’s car.
Why switch an R230 SL from iron brakes to carbon-ceramic?
Carbon-ceramic rotors reduce brake dust, resist heat-related fade, and remove rotating mass compared with iron rotors. On heavier and higher-output R230 trims such as the SL55, SL63, SL600, and SL65, the 380mm StopFlex rotors and Alcon calipers are chosen for repeated braking consistency rather than appearance alone.
Need Fitment Confirmation?
Send the exact vehicle details, current rotor sizes, and caliper type before ordering.
More Contact Information
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