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Improve pedal feel and braking capabilities!

GrimmSpeed Subaru BRZ Scion FR-S Master Cylinder Brake Brace

  • Large diameter Force Distribution Cap
    (Will not mar and damage the master cylinder like other braces)

  • Fits both Autos and Manuals

  • Indestructible CNC Laser cut 7GA Steel construction and black powder coating

  • Pedal feel dramatically improved
    (Similar feeling to SS Braided brake lines)

  • Does not require any cutting or modification of stock components.

  • Simple Allen key locking mechanism


Pressing the Subaru/Scion brakes leaves a lot to be desired, especially when every inch counts in a race or when you are depending on them to save your life! The firewall flex is the source of this performance flaw in Subaru's and Scions that we came to solve. The GrimmSpeed™ Master Cylinder Brace takes a beating and comes back for more! Crafted from hardcore CNC laser cut 12L14 with multi-point welded fabrication. Powdercoated black, this brace will outlive your car and win you some style points to boot. Most importantly this brace kit will kill your wimpy pedal feel and give you the immediate and tight response that your performance car deserves and needs when you hit the track or rally. This brace will give you the confidence similar to that of SS braided brake lines with precision stopping. Not to mention street driving just got a whole lot more fun!


Solving annoying OEM issues, it's what you can expect from GrimmSpeed™

This is an example of the effect the GrimmSpeed brace has on a flexing master cylinder.


8 Reviews

Derick 22nd Jan 2018


Easy to install, immediately noticeable when braking especially harder braking. One thing to note: in the install guide it mentions removing a sticker over the hole closest to master cylinder. On my '16, there was a bracket there instead with a plastic clip that was holding a bundle of wires together. The brace does not support the continued use of said bracket. Not a big deal, just something to note.

Trent 31st Aug 2017

GS Master Cylinder Brace

Overall I am very content with this product. There is a noticeable increase in braking force (and counter to this, a noticeable decrease in braking effort applied by the driver) during moderate to heavy braking. I can tell there is less flex in the firewall and the brakes feel less spongy and more tuned. My only cons: I would ideally want GS to provide a mounting solution for another wire loom that comes on the 2017 models (no biggie though as creative zip ties solve the solution without being unsightly, and I purchased this knowing it didn't have the mount for it, regardless) The packaging could be improved. Due to motion in transit and failure to package hardware seperately, the red anodized piece was scratched enough to remove the anodizing, and the bracket itself had been scratched as to remove some of the powder coating as well. Fix these issues, mainly the latter, and I would give it a full five stars.

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