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DBA 4000 Series drilled and slotted rear rotor for 2001–2007 Subaru WRX/STI (10‑stud hole) is a direct‑fit replacement featuring high‑carbon, heat‑treated iron and patented Kangaroo Paw ventilation for improved cooling. The 4000 Series XS adds a non‑directional drill and slot pattern with a gold hub finish, promoting pad cleaning, gas escape and consistent braking under load.
DBA 01-07 Subaru WRX/STI 10 Stud Hole Rear Drilled & Slotted 4000 Series Rotor
