Dynamite Friction 4512-31222 Disc Brake Kit - Rear

Rear Brake Kit for BMW 550i GT, 750i, and 750Li

The DFC GEOSPEC Coated Rotors with 5000 Advanced Brake Pads - Ceramic and Hardware kit, part number 4512-31222, is built for rear brake service on select BMW applications from 2010-2017. It combines coated rotors, ceramic pads, and matched hardware for a complete brake refresh with OE-style fit and finish.

Key Features

• DFC GEOSPEC coated brake rotors with a silver-gray corrosion-resistant finish
• Dry-processed, ready-to-install rotors with no oil cleanup required
• Non-directional rotor finish for smoother pad bed-in and quieter braking
• 5000 Advanced ceramic brake pads with post-cured friction material
• Scorched pads to reduce initial break-in time and improve first-stop response
• Premium rubber-steel-rubber shims for improved NVH control
• Disc brake hardware with PTFE coating, vulcanized rubber, and stainless steel
• OE-spec cast iron rotor construction and tight machining tolerances

Product Details

DFC designed this brake service kit for drivers who want a direct-fit rear brake solution with consistent pedal feel and controlled noise characteristics. The 4512-31222 kit pairs DFC GEOSPEC coated rotors with 5000 Advanced ceramic pads and hardware engineered to restore braking performance on BMW 550i GT xDrive, BMW 550i GT, BMW 750i xDrive, BMW 750Li, and BMW 750Li xDrive rear brake applications. The rotors are machined to OE-level specifications, inspected for critical dimensions, and finished to support even pad contact and stable stopping performance. The pads are formulated for stable friction behavior, while the hardware helps address wear, corrosion, and caliper movement that can affect brake feel over time.

What This Brake Kit Helps Address

• Rear brake noise from worn pads or fatigued hardware
• Uneven braking feel caused by rotor wear or corrosion
• Longer stopping distances from depleted friction material
• Brake pulsation related to rotor surface condition
• Reduced caliper stability from aged disc brake hardware

Installation Notes and Fitment

Compatible With rear brake service on 2010-2017 BMW 550i GT xDrive, 2010-2015 BMW 550i GT, 2010-2015 BMW 750i xDrive, 2011-2015 BMW 750Li, and 2010-2015 BMW 750Li xDrive. Fitment notes vary by rotor design, including applications with original design aluminum hat front rotors or optional design full cast front rotors. Verify rotor configuration before installation. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Quality Assurance

DFC states that the rotors are 100% inspected after machining and that vented rotors are electronically mill-balanced when needed. The rotors carry a 12-month warranty against defects in material and workmanship.