2003-2012 Mercedes-Benz SL-Class / AMG (R230) CCB Big Brake Kit | Brembo GT6 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 Brembo GT6 Front + Genuine Brembo GT4 Rear Setup
R230 SL owners usually shop this kit when the factory iron brakes feel overworked under repeated high-speed stops, create heavy dust behind open wheels, or add mass to a front end that already carries a V8, V12, or AMG drivetrain. This StopFlex kit pairs 380 mm carbon-ceramic rotors with Brembo V6 / GT6 / GTS6 6-piston front caliper options and Brembo V4 / GT4 / GTS4 4-piston rear options to add heat capacity while reducing iron-rotor dust and rotating mass. Every kit is built for the confirmed SL350, SL500, SL550, SL600, SL55, SL63, or SL65 configuration, including trim-specific brackets, rotor-hat offsets, and caliper mounting.
- 380 mm front and rear carbon-ceramic rotors require 19-inch or larger wheels on the R230 SL; spoke clearance must still be verified before the kit is built.
- Front caliper choices are V6, GT6, or GTS6 6-piston Brembo options, each matched to a 380 mm rotor for this R230 kit upgrade.
- R230 SL500, SL550, SL600, SL55, SL63, and SL65 variants can differ in hub geometry, knuckles, and wheel clearance, so StopFlex engineers the brackets and hats to the exact trim rather than treating every R230 as identical.
Fitment Hard Lines
| Field | Specification |
|---|---|
| Vehicle | Mercedes-Benz SL350 / SL500 / SL550 / SL600 / SL55 / SL63 / SL65 (R230) |
| Model years | 2003-2012 |
| Front setup | Brembo V6 / GT6 / GTS6 6-Piston Caliper Options / 380mm |
| Rear setup | Brembo V4 / GT4 / GTS4 4-Piston Caliper Options / 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 axle uses Brembo V6 / GT6 / GTS6 6-Piston Caliper Options, giving the heavy R230 roadster a larger pad area and more even pressure distribution than a smaller sliding-caliper layout. The buyer chooses V6 = Genuine Brembo OEM Cadillac CTS-V 6-Piston Caliper with 380 mm rotor, GT6 = Genuine Brembo GT | M6 6-Piston Caliper with 380 mm rotor, or GTS6 = Genuine Brembo GT | S6 6-Piston Caliper with 380 mm rotor. Each option is a genuine Brembo fixed-caliper foundation selected for consistent pedal response and rigid clamping under repeated heat cycles.
Rear Caliper (Balance)
The rear axle uses Brembo V4 / GT4 / GTS4 4-Piston Caliper Options on 380 mm carbon-ceramic rotors to keep rear contribution proportional to the front upgrade. The R230 uses a foot-operated mechanical parking brake with drum-in-hat hardware, not an electronic parking brake rear caliper, so EPB integration is not required.
Front & rear, engineered together: The 6-piston front and 4-piston rear package is engineered as a complete system so piston area, rotor diameter, hat offset, and caliper position are matched to the exact R230 trim. This avoids the front-only mismatch that can create poor rear contribution, longer pedal travel, or unstable brake balance during repeated high-speed stops.
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 | Brembo V6 / GT6 / GTS6 6-Piston Caliper Options |
| Front CCB rotors | 380mm |
| Rear calipers | Brembo V4 / GT4 / GTS4 4-Piston Caliper Options |
| 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. |
| Front caliper option mapping | V6 = Genuine Brembo OEM Cadillac CTS-V 6-Piston Caliper — 380 mm rotor GT6 = Genuine Brembo GT | M6 6-Piston Caliper — 380 mm rotor GTS6 = Genuine Brembo GT | S6 6-Piston Caliper — 380 mm rotor |
| Rear caliper option mapping | V4 = Genuine Brembo OEM Cadillac CTS-V 4-Piston Caliper — 380 mm rotor GT4 = Genuine Brembo GT | M4 4-Piston Caliper — 380 mm rotor GTS4 = Genuine Brembo GT | S4 4-Piston Caliper — 380 mm rotor |
FAQ
Will this kit fit my exact R230 SL trim?
The kit is not sold as a generic R230 bolt-on. StopFlex confirms the exact SL350, SL500, SL550, SL600, SL55, SL63, or SL65 configuration, then builds the brackets, rotor-hat offsets, and caliper mounting around that trim.
What wheel size do I need for the 380 mm setup?
The 380 mm front and rear rotors require 19-inch or larger wheels. Barrel clearance and spoke clearance both matter, so wheel model, width, offset, and a brake clearance check should be confirmed before production.
Does the rear kit keep the parking brake?
Yes, the R230 does not use an electronic parking brake caliper. It uses a foot-operated mechanical parking brake with drum-in-hat hardware, so the rear package is engineered around that factory parking-brake layout.
Why choose carbon-ceramic rotors instead of another iron big brake kit?
For an R230 SL used for fast road driving, repeated mountain descents, or track sessions, carbon-ceramic rotors reduce brake dust and rotating mass while adding heat resistance compared with conventional iron rotors. The payoff is most noticeable on heavy V8, V12, and AMG trims that repeatedly load the front brakes.
Need Fitment Confirmation?
Send the exact vehicle details, current rotor sizes, and caliper type before ordering.
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