Dynamic Friction 4302-03021 Disc Brake Kit - Rear

Overview

The Dynamic Friction 4302-03021 disc brake kit combines GEOSPEC coated rotors with 3000 ceramic brake pads for rear brake service. It is built for drivers who want OE-style braking performance, corrosion protection, and consistent pedal feel on select Hyundai and Kia applications.

Fits 2014-2016 Kia Cadenza, rear; Fits 2015-2019 Hyundai Sonata, rear; Fits 2016-2020 Kia Optima, rear; Fits 2016-2017 Hyundai Tucson, rear. This part number is 4302-03021.

Key Features

• GEOSPEC coated rotors resist rust and arrive dry for installation without extra prep.
• 3000 ceramic brake pads deliver stable friction, low dust, and strong fade resistance.
• Post-cured pads and scorched surfaces reduce initial break-in time.
• Rubber-steel-rubber shims improve noise, vibration, and harshness control.
• Non-directional rotor finish supports even pad bed-in and smoother braking.
• OE-spec rotor construction supports durability and consistent performance.

Detailed Description

Dynamic Friction 4302-03021 is a rear disc brake kit engineered around coated rotors and ceramic pads for everyday braking service. The GEOSPEC rotor coating helps protect the braking surface from corrosion, while the machined finish and balance inspection support quiet operation and stable stopping performance. The 3000 ceramic pad formulation is designed for passenger vehicles and light-duty trucks, with low dust output and reliable friction across a wide temperature range.

For Hyundai Sonata, Kia Optima, Kia Cadenza, and Hyundai Tucson rear brake applications, this kit provides a direct service solution that matches the vehicle-specific fitment listed below. The 4302-03021 kit is also a practical choice when replacing worn rear brake components and restoring braking response, rotor finish, and pad consistency.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What It Helps Solve

• Brake noise caused by worn pads or uneven rotor surfaces
• Reduced stopping consistency from heat-affected friction material
• Rust buildup on exposed rotor surfaces
• Excess brake dust from older pad formulations
• Vibration or harshness during normal braking

Installation Notes

Verify rear fitment by year, make, model, and notes before ordering. Some Hyundai Sonata and Kia Optima applications require attention to manual parking brake or rotor size notes listed in the fitment data. Clean mating surfaces, inspect caliper condition, and follow the vehicle service procedure for pad bedding after installation.

Quality Assurance

DFC GEOSPEC rotors are machined to tight tolerances, inspected for critical dimensions, and finished to OE specifications. The rotors carry a 12-month warranty against defects in material and workmanship.