Dynamic Friction 820-31181D Disc Brake Rotor - Rear Right

Drilled rear brake rotor for BMW

This Dynamic Friction Geoperformance rotor is a rear right disc brake rotor built for BMW applications that call for a directional, vented, drilled design. It is a fitment-specific replacement for models including the BMW 840i, X5, and 750i xDrive, with coverage spanning 2016-2026.

Key features

• Geoperformance Rotor - Drilled product line for application-specific brake service.
• X-drilled surface helps manage heat and maintain consistent brake response.
• Vented rotor construction supports airflow through the braking surface.
• Directional brake surface is engineered for the specified rotation pattern.
• Plain disc finish with a 370 mm outside diameter and 22.4 mm discard thickness.

Detailed description

Part number 820-31181D is a Dynamic Friction disc brake rotor for rear right fitments on BMW vehicles. The listed applications include the BMW 840i and 840i Gran Coupe, BMW X5, BMW X6, BMW X7, BMW 540i, BMW 740i, and BMW 750i xDrive, along with related xDrive variants. The drilled, vented, directional design is suited to replacement service where the original rotor specification calls for this exact configuration. Part number 820-31181D is also identified as a Geoperformance Rotor - Drilled unit for these BMW brake applications.

What it is used for

• Replacing a worn rear brake rotor on supported BMW models.
• Addressing brake pulsation caused by rotor wear or surface variation.
• Restoring proper braking surface thickness on the rear axle.
• Maintaining the specified drilled and vented rotor configuration.

Installation notes and tips

Verify rear right fitment, rotor diameter, and discard thickness before installation. This rotor is directional, so install it in the correct rotation orientation for the application. Confirm whether the vehicle uses the full cast replacement for aluminum hat disc configuration where noted in the fitment data.

Quality assurance

Dynamic Friction supplies this Geoperformance rotor as an application-specific brake component for listed BMW fitments. Use the part number 820-31181D to confirm the correct rotor before ordering or installation.