DBA DBA42389 4000 Series HD Plain Street Brake Rotor

The DBA DBA42389 is a 4000 Series Heavy-Duty (HD) plain brake rotor from Disc Brakes Australia, engineered for drivers who demand reliable, consistent stopping performance in demanding street conditions. Built to OE dimensions with upgraded metallurgy, this rotor delivers improved heat dissipation and longer service life compared to standard replacement rotors.

DBA's 4000 Series HD rotors are manufactured from a high-carbon gray iron alloy that resists warping and cracking under repeated heavy braking. The plain (smooth) face design is ideal for factory brake pad compounds and is a direct bolt-on replacement for supported applications.

Key Features:

• 4000 Series Heavy-Duty construction for enhanced durability and longevity
• High-carbon gray iron alloy resists heat-induced warping and cracking
• Plain (smooth) rotor face — compatible with OE and performance street brake pads
• Precision-machined to strict OE tolerances for minimal runout and vibration-free braking
• Zinc dichromate coating on non-swept surfaces to resist corrosion during storage and use
• Direct bolt-on replacement — no modifications required
• Manufactured to Australian Design Rules (ADR) and meets or exceeds OE standards

The DBA DBA42389 is an excellent upgrade or direct replacement rotor for everyday driving and heavier-use applications such as towing or frequent mountain driving, where thermal stability is critical.