DBA DBA42677S 4000 Series T3 Slotted Performance Disc Brake Rotor

The DBA DBA42677S is a 4000 Series T3 slotted single-piece performance disc brake rotor, representing the pinnacle of DBA's direct-replacement performance rotor lineup. These bi-directional slotted disc brake rotors are meticulously designed and engineered to deliver a high-performance braking experience that is significantly quieter, more responsive, and offers a smoother pedal feel.

T3 Bi-Directional Slot Design

Built on the same design as the T2 slots, the T3 adds several more gas-scavenging slots to the rotor face, going from 32 slots in the T2 to 48 slots in the T3. The tri-symmetrical curved slots dampen vibration harmonics and increase the number of exit points for brake pad friction gases to escape. The design also removes the need for directional rotors, allowing one rotor to be used on both sides.

Kangaroo Paw Ventilation System

The majority of DBA's 4000 Series Brake Rotors showcase the innovative Kangaroo Paw ventilation system. This system integrates a pattern of 144 diamond and teardrop-shaped pillars, delivering an outstanding 30% increase in surface area and a remarkable 20% enhancement in cooling efficiency when compared to conventional straight vane designs.

Key Features:

• Cast from XG-150 high carbon alloyed iron and undergoing Thermal Stability Profiling (TSP), DBA's metallurgy is able to handle the increased stress and heat generated under intense braking applications.
• CBN (Cubic Boron Nitride) machine-turned finish, minimizing disc thickness variation and the potential for pad knock and resulting premature wear.
• All 4000 Series Brake Rotors are equipped with Thermographic heat paint markings that undergo color changes at specific temperature thresholds, providing a valuable visual aid for monitoring braking temperatures and rotor fatigue.
• Painted non-friction areas to prevent rust and enhance appearance.
• Manufactured to QS-9000 quality standards using premium grade materials with a high iron content and dense metal matrix, resulting in long wear and safe, consistent stopping power.
• Slots continually de-glaze the brake pads, improving efficiency and reducing rotor scoring, while evening out wear across brake pad faces, increasing effective contact area and extending rotor life.

DBA recommends the T3 slot for high-performance applications. DBA provides a limited warranty to the original purchaser for 12 months or 12,000 miles, whichever occurs first. Sold individually.