The Project Mu Racing 999 rear brake pads for 2013–2015 Subaru BRZ and Scion FR‑S are rear-specific replacement pads using the Racing 999 friction compound. Offered as direct-fit replacements for the listed models, they are intended to complement front braking upgrades and provide consistent braking feel under demanding driving conditions where a higher-temp pad compound is preferred.
Project Mu 13-15 Subaru BRZ/Scion FRS Racing 999 Rear Brake Pads