Perrin 22+ GR86 / 13-16 FR-S / 17-20 86 / 13+ BRZ Master Cylinder Support - Black (PSP-BRK-406BK)

Regular price $89.00 USD $71.87 USD

Ready To Ship! Special Order! Ships in 6+ weeks

Part # perPSP-BRK-406BK

The PERRIN Master Cylinder Brace stops the master cylinder from moving inadvertently, increasing the firmness and responsiveness of the brake pedal.

Your brake pedal is connected to the thin sheet metal firewall which flexes as you apply the brakes. The firewall is not stiff enough to deal with the constant and repeated forces while applying the brakes. The PERRIN Master Cylinder Brace creates a bridge between the firewall, master cylinder, and shock tower, significantly reducing flex in the firewall while braking.

The PERRIN Master Cylinder Brace significantly reduces flex at the firewall, so you get a solid brake pedal feel with every application of the brakes. This is very noticeable while under heavy braking and even slowing for a stop sign. The difference can immediately be felt after installation.

The PERRIN Master Cylinder Brace for the FR-S, BRZ, and 86 are CNC machined from a large piece of 6061-T6 billet aluminum to improve rigidity. With stainless hardware, the PERRIN Master Cylinder Brace will look great and last the life of the car, even in the harshest conditions.

The PERRIN Master Cylinder Brace is designed to attach strategically to multiple points on the shock tower. This helps reduce flex in the brake master cylinder by creating a solid connection between it and the chassis. An adjustable screw that allows tension to be preloaded on the master cylinder to further aid in stiffening or tightening up this connection.


  • Toyota GR86 (2022, 2023, 2024)
  • Scion FR-S (2013, 2014, 2015, 2016)
  • Toyota 86 (2017, 2018, 2019, 2020)
  • Subaru BRZ (2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024)


  • Body Material 6061 T6 Aluminum
  • Finish Black
  • Reduce Flex
  • Stiffen Brake Pedal Feel
  • CNC machined from a large piece of 6061-T6 billet aluminum to improve rigidity
  • Designed to attach strategically to multiple points on the shock tower.

Customer Reviews

Customer Reviews

Based on 1 review
Fujibo H.Y. (Stevensville, MD, US)
Perfect fitment! Increases brake confidence!

Never knew something so small could make such a big difference!

Workspace is a little tight, but overall, I am very happy with this product, and highly recommend if you want to increase your braking stability

Shoutout to Kamispeed for providing authentic parts as always

Install Difficulty 3/5- Not too bad if you have the right tools! Small workspace area

Performance 5/5- Performs as expected! No complaints and great value

Product Quality 5/5. Top quality from Perrin as always with detailed instructions YouTube video placeholder

Customer Questions


In stock, non special order items can be returned within 30 days of the product arriving to your house or place of work.
Returns will NOT be accepted on Clearance Items, Final Sales, Special Orders, Opened, Installed, Incomplete, or Otherwise Used Products. In order to initiate a return, an RMA number must be requested and approved via e-mail.
All returns will be subject to a 20% restocking fee minus complete shipping cost (roundtrip).

Any processed orders that have not shipped will incur a 6% cancelation refund fee unless the product was not available to ship within a timely manner. No fee will be incurred if used as store credit.

For complete details on our return policy, please see our Help and FAQ link under HELPFUL INFO.

All international orders outside of the USA are subject to duties and taxes per your countries jurisdiction and determined by customs.
Kami Speed serves the right to ship using an alternative method if we see it fit, in order to expedite shipping and reduce your rate depending on product value.


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