DBA DBA42550XS Series Drilled Slotted Brake Rotor - 4000

The DBA DBA42550XS is a 4000 Series XS drilled and slotted brake disc from Disc Brakes Australia (DBA), engineered for drivers who demand superior stopping performance beyond what a standard OEM rotor can deliver. The 4000 XS series combines DBA's signature Geomet® protective coating with a unique cross-drilled and slotted surface pattern, resulting in consistent, fade-resistant braking under both street and demanding performance conditions.

Key Features:

• Drilled & Slotted Design: Cross-drilled holes improve heat dissipation and reduce unsprung weight, while the slots continuously clean and deglaze brake pad surfaces for consistent bite
• Geomet® Protective Coating: DBA's proprietary corrosion-resistant finish extends rotor life and maintains a clean appearance — no need to remove factory coating before installation
• 4000 Series Construction: Manufactured from high-carbon grey iron for superior thermal capacity and reduced noise, vibration, and harshness (NVH)
• Zinc Wash Treatment: Applied to friction surfaces for added corrosion protection during storage and shipping
• OE-Style Fitment: Direct bolt-on replacement designed to meet or exceed original equipment specifications for straightforward installation
• Improved Thermal Performance: Enhanced venting and surface geometry work together to manage heat buildup during repeated heavy braking events

The DBA 4000 XS series is a popular upgrade choice for performance-minded drivers seeking a reliable, long-lasting brake rotor that delivers improved pedal feel and fade resistance over stock components. Backed by DBA's decades of motorsport-derived engineering experience.