DBA DBA4947 4000 Series HD Plain Front Brake Rotor

The DBA DBA4947 is a 4000 Series HD plain front disc brake rotor engineered for Mazda applications. Designed as a direct OE replacement, this single-piece rotor delivers enhanced braking performance beyond standard factory levels without requiring caliper relocation or additional brackets.

Manufactured from high carbon alloyed iron, the DBA 4000 Series HD rotor is paired with DBA's proprietary Thermal Stability Profiling (TSP) process — a metallurgical treatment that increases the rotor's capacity to handle constant and extreme heat during prolonged or intense braking events. This makes the DBA4947 significantly more resistant to fatigue and surface cracking compared to standard OEM rotors.

The plain, non-slotted friction face provides a smooth braking surface ideal for daily driving and street performance use, offering a consistent and quiet pedal feel. All 4000 Series HD rotors feature Thermographic Heat Paint markings that change color at specific temperature thresholds, providing a valuable visual tool for monitoring rotor temperatures and assessing rotor fatigue over time.

Key Features:

• DBA 4000 Series HD single-piece plain front brake rotor
• Direct OE replacement — no caliper relocation or brackets required
• High carbon alloyed iron construction with Thermal Stability Profiling (TSP)
• Superior heat resistance for consistent performance under aggressive driving conditions
• Thermographic heat paint markings for temperature and fatigue monitoring
• Smooth plain friction face for quiet, consistent street performance
• Sold individually

The DBA DBA4947 is an ideal upgrade for Mazda owners seeking improved braking durability and heat management over standard OEM rotors, while retaining a direct-fit, street-friendly plain rotor design.