DBA DBA42021XS 4000 Series Cross-Drilled & Slotted Rear Brake Rotor

The DBA DBA42021XS is a high-performance rear disc brake rotor from DBA's acclaimed 4000 Series lineup, engineered for drivers seeking upgraded braking performance beyond OE standards. This premium single-piece rotor features DBA's signature cross-drilled and slotted XS design, combining enhanced aesthetics with serious performance benefits for street, sport, and light track applications.

Advanced Cooling Technology:

• Kangaroo Paw ventilation system with 144 diamond and teardrop-patterned pillars delivers up to 30% more surface area and 20% improved cooling efficiency compared to traditional straight vane designs
• Cross-drilled holes and precision-machined slots provide multiple exit points for brake dust and gases, maintaining consistent pad contact and responsive pedal feel
• Thermo-Graphic heat paint markings change color at specific temperature thresholds, allowing drivers to monitor peak rotor temperatures and adjust pad selection accordingly

Premium Materials & Construction:

• Cast from XG-150 high carbon alloyed iron for superior strength and durability under intense braking conditions
• Thermal Stability Profiling (TSP) heat treatment process relieves internal stresses and reduces metal fatigue for extended service life
• CBN (Cubic Boron Nitride) machine-turned finish minimizes disc thickness variation and prevents premature pad wear
• Painted non-friction areas protect against corrosion while enhancing appearance

Design Features:

• Non-directional symmetrical drill and slot pattern allows universal left/right fitment
• Vented design for enhanced heat dissipation during repeated heavy braking
• Direct OE replacement installation with no modifications required
• Manufactured to ISO 9001, QS 9000, TS 16949, and TUV certification standards

This is a single rotor sold individually. DBA 4000 Series XS rotors offer an ideal balance of performance, durability, and style for enthusiasts, weekend track drivers, and anyone seeking reliable high-performance braking. Note: Drilled rotor configurations are not recommended for heavy off-road or dedicated track day usage.