
Pistons
Cosworth Pistons Subaru WRX STi EJ25 99.75mm 8.2:1CR - Subaru WRX STI GD / WRX STI GR/GV / WRX STI VA
$1,179.16 USD
Learn more$140.00 USD
Select your vehicle to confirm fit
Cusco – Master Cylinder Braces. Fits Subaru WRX STI GD.
Experience a noticeable improvement in your vehicle's braking performance with the Cusco Brake Master Cylinder Stopper 666 561 ALHD. This innovative component is designed to enhance the feel of your brake pedal, especially during those intense braking moments.
Replacing factory components with the Cusco Brake Master Cylinder Stopper can significantly improve your vehicle's braking capabilities. The added stability means that you can expect:
This brake master cylinder stopper is engineered to fit a range of specific models, enhancing your vehicle's braking system without the need for extensive modifications. Always check compatibility with your vehicle to ensure optimal performance.
Many users have reported a significant difference in their braking experience after installing the 666 561 ALHD. One customer noted, "I could feel the difference immediately. The brake pedal feels much firmer, and I have more confidence when braking hard. It's a game changer for spirited driving!"
Another driver shared, "Installation was straightforward, and the improvement in pedal feel is noticeable. I highly recommend this to anyone looking to upgrade their braking system." This product not only meets but exceeds expectations, making it a must-have for automotive enthusiasts.
⚠WARNING: Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov
Fitment: Subaru WRX STI GD (2004-2007) EJ257 2.5T
Please confirm year, trim and engine before ordering.
| Part number | CT-VR-666-561-ALHD |
|---|---|
| Shipping weight | 3 lbs |
| Package size | 12 × 10 × 6 in |
| Vehicle | Years | Engine / trim | Notes |
|---|---|---|---|
| Subaru WRX STI GD | 2004–2007 | EJ257 2.5T |
Every order is confirmed with our supplier before your card is charged. Once confirmed, parts ship from our partner warehouse and you receive tracking by email.
Need to return something? See our Shipping, Returns & Order Policy policy.

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