DBA DBA4909 4000 Series HD Plain Front Disc Brake Rotor

The DBA DBA4909 is a 4000 Series HD plain front disc brake rotor engineered as a direct-fit performance upgrade over standard OEM brakes. Designed as a direct replacement single-piece brake rotor, the 4000 Series targets drivers seeking upgraded performance braking above and beyond standard OE levels.

Key Features:

• XG-150 High Carbon Alloyed Iron Construction: Cast from XG-150 high carbon alloyed iron and subjected to Thermal Stability Profiling (TSP), DBA's metallurgy handles the increased stress and heat generated under intense braking applications, time and time again.
• Kangaroo Paw™ Ventilation: Featuring DBA's Kangaroo Paw ventilation that implements a series of 144 diamond and teardrop patterned pillars, DBA achieves up to a 30% increase in surface area and 20% improvement in cooling efficiency compared to a traditional straight vane design.
• HD Plain (Smooth) Finish: The 4000 Series HD variant features a smooth OE-style rotor finish, popular for drivers seeking the performance benefits of a 4000 Series rotor while requiring an OE-style look, such as controlled race divisions.
• CBN Machine Turned Surface: A Cubic Boron Nitride (CBN) machine turned finish minimizes disc thickness variation and the potential for pad knock and resulting premature wear.
• Temperature Indicator Paint: Paint markings change color at specific temperature thresholds to assist with monitoring braking temperatures and rotor fatigue.
• Rust-Resistant Coating: Painted non-friction areas prevent rust and enhance appearance.
• Universal Fitment Design: Symmetrical slotting and/or drilling allows for universal left/right use.

DBA USA is the US division of Disc Brakes Australia, an award-winning brake manufacturer based in Silverwater, NSW. DBA is a global leader in disc rotor manufacturing with over four decades of manufacturing experience and product design innovations.