Dynamic Friction 4504-31161 Disc Brake Kit - Front and Rear

Disc Brake Kit Overview

This Dynamic Friction disc brake kit is built for BMW applications that use front and rear service coverage in one matched package. Part number 4504-31161 is listed for select BMW 840i, 840i Gran Coupe, M850i xDrive, and X5 applications, with fitment notes that distinguish optional design full cast rotors and original design aluminum hat rotors.

Key Features

• Disc brake kit for front and rear service coverage
• Application-specific fitment for select BMW performance and utility models
• Includes DFC Geospec Rotors with 5000 Advanced Brake Pads
• Fitment notes identify rotor design differences by application
• Part number 4504-31161 for catalog and service matching

Detailed Description

Part number 4504-31161 from Dynamic Friction is a brake service kit organized around DFC Geospec Rotors with 5000 Advanced Brake Pads. The brand line indicates a matched rotor-and-pad package, which helps simplify brake service when replacing wear components on compatible BMW platforms. Fitment is listed for 2020-2023 BMW 840i, 2020-2023 BMW 840i Gran Coupe, 2020-2023 BMW 840i xDrive, 2020-2023 BMW 840i xDrive Gran Coupe, 2019-2022 BMW M850i xDrive, 2020-2022 BMW M850i xDrive Gran Coupe, and 2021-2022 BMW X5. Notes specify optional design full cast rotors on some applications and original design aluminum hat rotors on others, so matching the vehicle’s rotor configuration is important when selecting this BMW brake kit.

What This Kit Helps Address

• Brake pad wear that reduces stopping consistency
• Rotor wear that can affect pedal feel and braking smoothness
• Brake service needs on BMW models with matched front and rear coverage
• Application mismatch caused by different rotor designs
• Catalog lookup for the correct brake kit by part number 4504-31161

Installation Notes and Tips

Verify the vehicle’s rotor design before ordering, since fitment notes separate optional design full cast rotors from original design aluminum hat rotors. Confirm the year, model, and drivetrain details against the listed BMW applications before installation. Use the fitment notes to match the correct brake service configuration for 840i, M850i xDrive, and X5 applications.

Quality Assurance

Dynamic Friction identifies this kit under the DFC Geospec Rotors with 5000 Advanced Brake Pads line, indicating a coordinated rotor and pad service package for listed BMW applications. Part number 4504-31161 should be matched to the vehicle’s rotor design and fitment notes for correct application selection.