Subaru WRX STI ('18+) Front Rotors

Give your VA-chassis STI the braking consistency it deserves with Girodisc’s 2‑piece floating front rotors. They bolt on in place of the factory discs with no modifications, maintain OEM brake bias and ABS calibration, and deliver cooler operation with a more confident pedal feel during repeated hard stops.

Machined and assembled in the USA, these rotors pair a lightweight 6061‑T6 aluminum hat with Girodisc’s proprietary high‑carbon iron rings. The internal curved vanes act like a centrifugal pump, drawing air through the disc to manage heat and reduce fade on back‑to‑back braking events.

Precision‑Engineered Performance

Vehicle Fitment

• Subaru WRX STI (2018–2021, VA)

A1-185 Girodisc Subaru WRX STI ('18+) Front Rotors Features

• True OEM replacement: Direct bolt‑on with factory calipers and hardware—no adapters needed.

• Curved vane ventilation: 48 directional vanes circulate cooling air through the rotor to control temperatures.

• Floating mount system: High‑strength drive pins with anti‑noise spring washers allow smooth thermal expansion without rattle.

• Serviceable two‑piece design: Reuse the aluminum hats and replace only the iron rings when worn.

• Made in the USA: Designed, cast, and machined in‑house to motorsport standards.

A1-185 Girodisc Subaru WRX STI ('18+) Front Rotors FAQs

Do these fit the factory Brembo calipers? Yes—this kit is designed to bolt directly to the OEM STI calipers.

Are they suitable for daily driving? Absolutely. They’re quiet and smooth on the street yet robust enough for track days.

Will they change brake bias? No. Girodisc designs maintain stock bias and work seamlessly with ABS and stability systems.

Are they sold individually? No—Girodisc rotors are sold and priced per pair.

Step up to Girodisc floating rotors for your WRX STI and enjoy cooler, more consistent braking with reduced fade and sharper pedal response.