GrimmSpeed Subaru BRZ / Scion FR-S Master Cylinder Brace

This GrimmSpeed master cylinder brace is made from 3/16 inch thick steel, a solid choice for stiffening up the firewall where the master cylinder mounts. On many Subaru BRZ, Scion FR-S, and Toyota 86 models, the firewall can flex under hard braking. This flex can make your brake pedal feel a bit mushy or inconsistent, especially during spirited driving or track use. By adding this brace, you're essentially creating a more solid connection between the master cylinder and the chassis, which helps reduce that unwanted flex.

The brace is designed to bolt directly to the firewall and the master cylinder mounting studs, making installation straightforward. You won't need to do any welding or drilling. Once installed, you should notice a more direct and responsive brake pedal feel. It's a popular modification for drivers who want to improve their braking confidence without changing out the entire brake system.