The Brembo big brake kit replaces front braking components with six-piston billet calipers and 350x34 mm two-piece slotted Type3 rotors in a nickel finish. Specified for 2004–2021 WRX STI applications, this package includes the rotor dimensions and slotted profile described, delivering a complete front brake upgrade across the listed model years.
Brembo 04-21 WRX STI Front GTR BBK 6 Piston Billet 350x34 2pc Rotor Slotted Type3- Nickel