Dynamite Friction 4502-80112 Disc Brake Kit - Rear

Rear Brake Kit for Mazda CX-3 and Mazda 3

The DFC GEOSPEC Rotors with 5000 Advanced Brake Pads kit is a rear disc brake service kit built for specific Mazda applications. Part number 4502-80112 combines coated rotors and matched pads to support consistent braking performance, quieter operation, and easier installation on confirmed rear fitments.

• Complete rear disc brake kit with rotors and pads
• DFC GEOSPEC coated rotors with silver-gray corrosion-resistant finish
• Dry-packed rotors arrive ready to install
• Non-directional rotor finish supports even pad bed-in
• 5000 Advanced pads are post-cured and scorched for stable friction
• Premium rubber-steel-rubber shims help reduce noise, vibration, and harshness
• OE-style rotor metallurgy and machining for dimensional consistency

Product Line Details

DFC GEOSPEC rotors are coated to resist rust better than conventional paint or zinc finishes, while still being processed dry so there is no oil coating to clean before installation. The 5000 Advanced brake pads are formulated for modern vehicle braking demands and are assembled with shims that help improve pedal feel and reduce brake noise. Together, these components create a service kit focused on rear brake replacement for Mazda CX-3 and Mazda 3 applications.

This part number, 4502-80112, is listed for rear brake service on 2021-2022 Mazda CX-3, 2019-2020 Mazda CX-3, and 2017-2018 Mazda 3 / Mazda 3 Sport with electric parking brake configurations noted in the fitment data. This part cross-references no additional part numbers in the provided data.

What It Helps Fix

• Rear brake noise during stops
• Rust buildup on exposed rotor surfaces
• Uneven or rough braking feel
• Brake pad wear that requires rotor replacement
• Longer service time caused by oil-coated replacement rotors

Installation Notes

Confirm rear axle fitment before ordering, especially on 2017-2018 Mazda 3 and Mazda 3 Sport models with electric parking brake notes and Mexico- or Japan-built configurations. The rotors are shipped dry and ready to install, which helps reduce prep time during a standard rear brake service. Always verify rotor orientation, pad seating, and parking brake operation after installation.

Quality Assurance

DFC machines these rotors to tight tolerances, applies a non-directional finish, and inspects critical dimensions to help ensure OE-level fit and function. Vented rotors are balance-checked and corrected when needed. Rotors include a 12-month warranty against defects in material and workmanship.