Dynamic Friction 920-31186D Disc Brake Rotor - Front Left

Overview

The Dynamic Friction 920-31186D is a drilled disc brake rotor built for BMW applications that require a front left replacement with a full cast design for an aluminum hat disc setup. It combines a vented rotor structure with a directional, X-drilled surface to support consistent braking performance under demanding use.

Compatible With BMW X5, BMW X6, BMW X4, and BMW X3 applications, this rotor is part of the DFC Hi-Carbon Alloy GEOMET Coated Rotor - Drilled line. The 920-31186D is engineered for drivers who need a direct-fit brake rotor replacement with the correct dimensions and surface design for the listed applications.

Key Features

• Drilled, directional braking surface for improved heat management and water evacuation.
• Vented rotor construction for stable braking performance.
• Plain disc finish with GEOMET-coated rotor line engineering.
• Full cast replacement for aluminum hat disc applications.
• Fits BMW X5, X6, X4, and X3 front left applications listed below.

Detailed Description

The Dynamic Friction 920-31186D brake rotor is designed around the specifications needed for select BMW X5, X6, X4, and X3 front left applications from 2020 through 2026, depending on model. Its 395 mm outside diameter and 34.4 mm discard thickness align with the listed fitment, while the vented, X-drilled, directional surface supports controlled braking response. As part of the DFC Hi-Carbon Alloy GEOMET Coated Rotor - Drilled product line, this rotor is built for applications that call for a full cast replacement for an aluminum hat disc.

This part number, 920-31186D, is a fitment-specific rotor for BMW X5 and BMW X6 models from 2020-2026, BMW X4 models from 2020-2025, and BMW X3 models from 2020-2024. The 920-31186D designation is useful when matching the correct rotor to the listed vehicle and position requirements.

What It Is Used For

• Replacing a worn or scored front left brake rotor.
• Restoring braking smoothness when rotor surface wear is present.
• Addressing vibration caused by rotor thickness variation or surface damage.
• Matching the correct rotor design for drilled, vented brake systems.

Installation Notes and Tips

Install only on the listed BMW applications and position shown in the fitment data. Verify rotor diameter, discard thickness, and directional surface orientation before installation. Because this rotor is directional, confirm the correct side and rotation direction during setup. Always inspect related brake components for wear before completing the repair.

Quality Assurance

Dynamic Friction identifies this rotor as part of its DFC Hi-Carbon Alloy GEOMET Coated Rotor - Drilled line, which emphasizes coated rotor construction and application-specific fitment. Part number 920-31186D should be matched carefully to the vehicle, model year, and front left position listed in the fitment table.