Disc Brakes Australia Brake Parts

The best brake rotors for a Subaru WRX or WRX STI balance heat capacity, pedal consistency, and street manners — and the Disc Brakes Australia (DBA) 4000 series is one of the most popular upgrades in that mix. Slotted and drilled faces sweep gas and debris away so the pad keeps biting hard, lap after lap, while DBA's standard-face rotors give daily drivers OEM-plus reliability at a friendly price. Match the rotor pattern to how you actually drive: T3 slotted for street and canyon runs, XS or XD drilled-and-slotted for harder use.

Why Rotors Matter More Than You Think

Brake rotors turn your car's kinetic energy into heat — every stop dumps enormous thermal energy into those iron discs. Cheap or worn rotors overheat, glaze the pads, and cause the shuddering pedal and fading bite every enthusiast dreads.

DBA's 4000 series covers the common Subaru fitments, including 08+ WRX and 04-17 WRX STI rear rotors sized for the factory Brembo calipers — check your year and model before ordering.

The Brands Behind These Rotors

Disc Brakes Australia (DBA) is the Australian rotor specialist behind every part in this collection. DBA built its reputation on performance brake rotors engineered for real-world heat — the 4000 series pairs cast-iron rotors with slotted, drilled, and dimpled face patterns that manage heat and pad deposits, all with precision-machined faces that are a DBA signature.

EBC Brakes is the British brake manufacturer whose pads and rotors pair naturally with DBA discs — many drivers match DBA rotors to EBC pad compounds for a street-friendly setup. Explore the EBC Brakes collection for matching pad options.

Brembo needs little introduction: the Italian giant behind the STI's factory Brembo calipers also makes OE-equivalent and performance rotors. See the Brembo collection for more of the brand's catalog.

Pair these rotors with the right supporting parts: our brake rotors range and brake pads matched to your driving style, plus big brake kits when a rotor-and-pad swap is no longer enough.

Popular DBA picks include the 4000 XS cross-drilled and slotted rotor for 08+ WRX (rear), the 4000 XD cross-drilled and dimpled rotor for 04-17 WRX STI (rear), and the 4000 T3 slotted rotor for classic 90s Subaru fitments.

Not sure where to start? Our guide on upgrading brake systems on the WRX walks through rotors, pads, and lines together.

Frequently Asked Questions

Do I need slotted, drilled, or plain rotors?

Plain-face rotors suit daily drivers best — quiet and long-lived. Slotted rotors clean the pad face and resist glazing for spirited driving. Drilled or dimpled rotors add bite and looks for street and light track use.

Should I replace my brake pads with the rotors?

Yes. New rotors deserve fresh pads so both surfaces bed in together. Mixing worn pads with new rotors invites noise, uneven wear, and poor initial bite.

Do brake rotors require a tune or ECU change?

No. Rotors are a mechanical bolt-on — no tuning, no warning lights, and no supporting mods beyond a proper bleed if you open the hydraulic system.

How do I confirm fitment for my Subaru?

Rotor diameter and hat offset vary by year and trim — double-check your year and model, and when in doubt match the part number against the rotor you're replacing.