Perrin Master Cylinder Support Brace Subaru WRX / STI 2002-2007 | PSP-BRK-400

Rated 5.0 out of 5
Based on 3 reviews
SKU: perPSP-BRK-400
Availability: 8 In Stock Learn more
Type: Brake Brackets
Regular price
Regular price
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Instant Discount

Regular Price: $108.00 - Instant discount: $16.20 = $91.80

Subtotal: $91.80

Delivery Options:

  • Economy $11.95
  • 2 Business Day
  • Next Business Day
  • 2 Days or Less $6.95
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Next Day Delivery Eligibility
  • Order in-stock items before 3:30 PM EST with 'Fastest' delivery for next-day arrival.
  • Orders from Friday to Sunday arrive by the following Tuesday.

Delays can happen. Contact us if your order doesn't arrive on time for a $20 credit on your next purchase. Minimum order must be $99

Fitment Information:

2002-2007 Subaru WRX

2004-2007 Subaru STI

2004-2007 Subaru Forester XT


  • Increases Brake Pedal Stiffness and Response
  • Prevents Unwanted Movement of the Master Cylinder
  • Body Material 6061 T6 Aluminum
  • Finish Anodize Black
  • Intermediate Installation Effort
  • Estimated Installation Time - 2 Hours
  • Installation Guide
  • 5 Year Manufacturer Warranty

In the Box:

  • (1) PERRIN Master Cylinder Brace
  • (1) M12 Socket set cup
  • (1) M12 Jam nut
  • (1) M6 Fin hex nut
  • (4) M6 Flat washer
  • (3) M6 Button head socket cap screw
  • (1) Fender washer
  • (1) M6 Short arm hex key
  • (1) M4 Short arm hex key
  • Warranty & Instructions

The Perrin master cylinder support brace provides the much needed support for the master cylinder and brake booster that the stock setup just can't provide. When you place force against the pedal the brake booster and master cylinder actually bend away from the you. The sheet metal that these parts are bolted to just can't prevent movement and over time can fatigue to the point of failure. Perrin designers devised a simple plan to fix this problem- an easy to install and inexpensive brace cut from 6061 aluminum that bolts to the driver side shock tower. With the Perrin brace you are placing tension on the master cylinder opposite the brake pedal, completely eliminating this pendulum like motion. The firmed up pedal feel without any risk of damage to the fire wall makes this brace such a popular upgrade.