Mercedes S205 R231 Brake Disc Set AMG Rear Left Right Wheel N/O/S Perforated

Visual condition of the part

The product shows signs of use visible in the photos.

Mercedes S205 R231 Brake Disc Set AMG Rear Left Right Wheel N/O/S Perforated is an original set designed for the left and right side of the rear axle. The perforated design of the discs ensures efficient heat dissipation, better cleaning of the friction surface, and stable braking performance, which is particularly important in dynamically driven AMG models. This original set is a solution that allows you to maintain the factory characteristics of the braking system at controlled service costs.

Specifications and technical data

• SKU: A2314230212
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2314230212
• Substitutable numbers: A2314230212, A 231 423 02 12
• Location on the vehicle: Rear, Right, Left
• Category: Brake Disc Rotors

Application and purpose

The presented set includes AMG rear brake discs designed for installation on both wheels of the rear axle – on the left and right side. These components operate in a zone of high thermal and mechanical stress, which is why the perforation is crucial for maintaining a stable friction coefficient and reducing fading during intense braking.

Original AMG line discs are designed for cars with increased power and weight, which translates into appropriately selected thickness, working diameter, and ventilation channel geometry. As a result, the braking system maintains predictable behavior both in everyday driving and in more demanding conditions.

Benefits of using perforated AMG discs

The use of perforated discs on the rear axle brings a number of measurable operational benefits:

• more efficient removal of gases and friction dust from the brake pad working surface,
• better temperature stability during repetitive, heavy braking,
• more uniform wear of friction linings,
• increased resistance to a drop in braking efficiency under high load.

For the user, this means more confident vehicle control and a more predictable response of the braking system across a wide speed range. The AMG rear disc set is particularly recommended for drivers who expect consistency in the operation of the front and rear braking system and want to maintain the characteristics intended by Mercedes engineers.

Original Mercedes part – fitment and compatibility

As an item from the Brake discs group dedicated to the Mercedes brand, the set has been designed for specific model applications, maintaining factory dimensional tolerances. Proper fitment to the hub, caliper, and brake system shields minimizes the risk of vibrations, uneven runout, and installation problems.

Original origin ensures consistency with other system components – the pump, lines, calipers, and assistance systems (ABS, ESP). Thanks to this, after replacing the discs, you can expect the maintenance of factory operating parameters, without the need for additional modifications or adaptations.

Set characteristics and installation

The set includes discs intended for both sides of the rear axle, which allows for simultaneous replacement in pairs, as recommended by service practice. This method of servicing the braking system promotes an even distribution of braking forces and reduces the risk of differences in efficiency between the left and right sides.

The perforated working surface requires the use of pads with an appropriately selected friction compound, compatible with AMG discs. During installation, pay attention to proper cleaning of the hub, checking radial runout, and applying the correct tightening torque for the wheel mounting bolts, which has a direct impact on the operating quality of the entire system.

Brake system expansion and technical knowledge

If you are planning a comprehensive repair or upgrade of the braking zone in your Mercedes and need other elements from the same group, such as additional discs, pads, or brake lines, check the available parts in the Mercedes brake discs category.

When working with the braking system, it is also worth paying attention to the condition of the calipers, guides, and pistons. To better understand how to safely use original, used components and simultaneously optimize service costs, check out our guide: Brake calipers under the microscope: how to lower brake system repair costs by choosing proven recycled parts.