Dynamite Friction 4504-31109 Disc Brake Kit - Front and Rear

Brake Kit for BMW M550i xDrive

DFC GEOSPEC Rotors with 5000 Advanced Brake Pads, part number 4504-31109, is a front and rear disc brake kit for select 2018-2020 BMW M550i xDrive applications. It combines coated rotors and advanced friction pads in one service package for OE-style brake maintenance.

Key Features

• Fits 2018-2020 BMW M550i xDrive, front and rear
• DFC GEOSPEC coated rotors with a silver-gray corrosion-resistant finish
• Rotors ship dry and are ready to install without oil removal
• Non-directional rotor finish supports even pad bed-in and quieter braking
• 5000 Advanced Brake Pads are post-cured and scorched for stable friction performance
• Premium rubber-steel-rubber shims help reduce noise, vibration, and harshness
• Part number 4504-31109 for brake service planning and catalog lookup

Product Details

The DFC GEOSPEC Rotors with 5000 Advanced Brake Pads package is built for BMW M550i xDrive brake service where rotor and pad replacement are needed together. The rotors are cast to G3000/G11H18 specifications, machined to tight tolerances, and inspected for balance and critical dimensions. The pads are formulated for consistent friction, with post-curing and scorching used to reduce initial break-in requirements. This part number 4504-31109 is listed for 2018-2020 BMW M550i xDrive front and rear service, including applications with aluminum hat rotors designed to original specifications and an optional full cast rotor design.

What This Brake Kit Helps Address

• Brake pulsation from worn or uneven rotors
• Reduced stopping performance from aged pads
• Brake noise caused by worn friction material or rotor finish issues
• Rust buildup on exposed rotor surfaces
• Extended service time when sourcing pads and rotors separately

Installation Notes

Fits 2018-2020 BMW M550i xDrive, front and rear. Confirm rotor design before ordering: this application includes aluminum hat rotors designed to original specifications and an optional full cast disc rotor design. The pads are assembled with premium shims, and the rotors are supplied dry and ready for installation. Verify axle position and wear sensor requirements during brake service.

Quality Assurance

Each rotor passes machining and 100% inspection for critical attributes, with vented rotors electronically mill-balanced when required. DFC states that every rotor is checked to OE specifications, and the rotors carry a 12-month warranty against defects in material and workmanship. The 5000 Advanced Brake Pads are post-cured and scorched to support stable friction performance from the first stop.