The Mercedes-AMG SL 63 (R232) Carbon Ceramic Braking (CCB) system—option code B07—is a high-performance upgrade designed for the latest generation of the SL roadster. For the R232 platform, Mercedes utilized a significant increase in rotor diameter to manage the weight and all-wheel-drive power of the new chassis.

Technical Specifications (R232 Platform)

Key Features & Commercial Profile

1. The “B07” Distinction

In the Mercedes-AMG ecosystem, Code B07 always denotes the Carbon Ceramic system.

• Aesthetics: The calipers are finished in the signature AMG Gold-painted metallic finish with “AMG Carbon Ceramic” lettering.

• Weight Reduction: This system reduces unsprung mass by approximately 40% (saving roughly $20\text{kg}$ to $25\text{kg}$ across the car). On the R232, which is significantly heavier than the previous R231, this weight saving is critical for maintaining steering precision and suspension agility.

2. Wheel & Fitment Requirements

• Minimum Diameter: Due to the $402\text{mm}$ front rotor, a minimum of 20-inch wheels is required.

• Rotor Design: The R232 uses a newer “two-piece” directional cooling vane design. These rotors are specifically ventilated to work with the active aerodynamics (Airpanel) in the SL’s front apron.

3. Part Number References (Initial Guide)

For your inventory at Buy Mustang parts Ltd, be cautious when cross-referencing with the older R231 model. The R232 components are unique to the new MSA (Modular Sports Architecture) shared with the AMG GT (C192).

• Front Ceramic Disc (Left): A2324211100 (or similar A232 prefix).

• Front Ceramic Disc (Right): A2324211200.

• Rear Ceramic Disc: A2324231000.

Inventory & Sales Strategy

The “New SL” Market

The R232 is a relatively new vehicle (2022+). Owners looking for these parts are typically either repairing accident damage or performing a high-end retrofit on an SL 43/SL 55 that originally came with the $390\text{mm}$ iron brakes.

Condition & Inspection

• Surface Health: Check for the “mirror finish.” CCB rotors for the R232 should not have any visible pitting.

• Minimum Weight: Like Porsche and Audi ceramics, these are measured by density. Check the Minimum Weight (g) stamped on the aluminum rotor hat.

• Pad Compatibility: Only use Code B07 specific pads. Using standard AMG iron-disc pads on these rotors will cause “smearing” and potential structural failure of the ceramic disc.

Listing Tip

If you are listing a complete set, emphasize that the R232 SL 63 CCB system is cross-compatible with the new AMG GT Coupe (C192). This doubles your potential customer base, as GT owners often look for the SL’s high-spec braking components for track upgrades.