Perrin Master Cylinder Brace | Subaru Multiple Fitments (PSP-BRK-400)

Perrin Performance


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Phone 1-888-627-3736

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$91.80 $108.00Instant Savings of 15% ($16.20)

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Master Cylinder Brace by Perrin

The PERRIN Master Cylinder Brace prevents unwanted movement of the master cylinder, allowing for increased brake pedal stiffness. Your brake pedal is connected to the thin sheet metal firewall which flexes as you apply the brakes. The PERRIN Master Cylinder Brace significantly reduces flex at the firewall, so you get 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.

When possible we try to design Master Cylinder Braces in one piece to improve rigidity. The PERRIN Performance Master Cylinder Brace for the 2002-07 WRX/STI is CNC machined from a large piece of 6061-T6 billet aluminum for extreme stiffness. With stainless steel hardware and an anodized finish, 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. To further aid in stiffening or tightening up this connection, included is an adjustable screw that allows tension to be preloaded on the master cylinder.


  • One-Piece Design
  • CNC Machined
  • 6061-T6 Billet Aluminum Construction
  • Black Anodized Finish
  • Stainless Steel Hardware


  • 2002 - 2007 Subaru Impreza
  • 2002 - 2007 Subaru Impreza RS
  • 2002 - 2007 Subaru Impreza WRX
  • 2004 - 2007 Subaru Impreza WRX STI

What's In The Box?

  • 1 - PERRIN Master Cylinder Brace
  • All necessary hardware included
  • Instructions
  • Warranty Information
  • Stickers



  • Perrin Performance 5 Year Limited Warranty

Customer Reviews

Based on 1 review
Nothing but the best!

This brake stopper really improves pedal feel and response, highly recommend this upgrade to your Subie