The Brembo GT big brake kit for 2021 and later Toyota Sienna (XL40) upgrades the front with six-piston cast calipers and two-piece 380×34 mm slotted Type‑3 rotors in yellow. This front-specific kit is a direct-fit replacement that combines multi-piston calipers with slotted two-piece rotors to improve heat management and braking repeatability for Sienna models where the application is explicitly supported.
Brembo 21+ Sienna (XL40) Front GT BBK 6 Piston Cast 380x34 2pc Rotor Slotted Type-3- Yellow