Dynamite Friction 4512-40165 Disc Brake Kit - Rear

Rear Brake Kit for Ram Heavy-Duty Applications

The DFC GEOSPEC Coated Rotors with 5000 Advanced Brake Pads - Ceramic and Hardware kit is built for rear brake service on select Ram 3500 and Ram 4000 models. Part number 4512-40165 combines coated rotors, ceramic pads, and brake hardware components in one service kit for OE-style fitment and consistent braking performance.

Key Features

• DFC GEOSPEC coated rear rotors with a silver-gray corrosion-resistant finish
• 5000 Advanced ceramic brake pads with post-cured friction material
• Scorched pad surface to reduce initial break-in time
• Premium rubber-steel-rubber shims for improved noise, vibration, and harshness control
• Non-directional rotor finish for more even pad bed-in and quieter stops
• Dry-processed rotors that are ready to install without oil removal
• OE-matched cast iron rotor construction for durability and stability

Product Details

DFC’s 5000 Advanced brake pad line is engineered around modern vehicle braking requirements, with friction formulations developed through OEM-focused research. The pads are 100% post cured for stable friction behavior and scorched to remove uncured bonding agents, which helps reduce the need for extended break-in. On the rotor side, DFC GEOSPEC coated rotors use a durable protective coating that resists rust better than conventional paint or zinc finishes while remaining safe for the friction surface. The rotors are machined to tight tolerances, finished non-directionally, and inspected for balance and critical dimensions to support smooth operation. This part number, 4512-40165, is a direct service solution for rear brake maintenance on Ram 3500 and Ram 4000 applications listed below.

Vehicle Fitment

• Fits 2025 Ram 3500, rear, Standard Output; DFC Geospec Rotors with 5000 Advanced Brake Pads includes Hardware
• Fits 2023-2024 Ram 3500, rear, Standard Output Transmission; DFC Geospec Rotors with 5000 Advanced Brake Pads includes Hardware
• Fits 2022 Ram 3500, rear, 11.5" Rear Axle (358mm Rear Disc); DFC Geospec Rotors with 5000 Advanced Brake Pads includes Hardware
• Fits 2019-2021 Ram 3500, rear, DRW; Standard Output Transmission; 11.5" Rear Axle; DFC GEOSPEC Coated Rotors with 5000 Advanced Brake Pads - Ceramic and Hardware
• Fits 2019-2021 Ram 3500, rear, DRW Brake Hydraulic Hose; DFC GEOSPEC Coated Rotors with 5000 Advanced Brake Pads - Ceramic and Hardware
• Fits 2021-2025 Ram 4000, rear, DFC Geospec Rotors with 5000 Advanced Brake Pads includes Hardware
• Fits 2019-2020 Ram 4000, rear, DFC GEOSPEC Coated Rotors with 5000 Advanced Brake Pads - Ceramic and Hardware
• Fits 2019-2020 Ram 4000, rear, Mexico; DFC GEOSPEC Coated Rotors with 5000 Advanced Brake Pads - Ceramic and Hardware

Common Brake Service Issues This Kit Addresses

• Rear brake noise from worn hardware or fatigued pad shims
• Uneven braking feel caused by rotor wear or inconsistent pad contact
• Rust buildup on exposed rotor surfaces
• Longer stopping distances from worn friction material
• Brake pulsation related to rotor finish or wear

Installation Notes and Quality Assurance

Before installation, confirm rear axle configuration, transmission notes, and hydraulic hose details against the vehicle listing for your Ram 3500 or Ram 4000. The coated rotors are shipped dry and ready to install, which eliminates the need to clean off oil before service. For best results, follow proper brake bedding procedures after installation to help the pads and rotors seat evenly.

Every DFC GEOSPEC rotor is backed by a 12-month warranty against defects in material and workmanship. Part number 4512-40165 is built to OE specifications for fit, balance, and braking consistency on the listed rear applications.