Radium Master Cylinder Brace and T - Subaru Models (inc. 2015-2021 WRX / STI / 2014-2018 Forester XT)
Radium Master Cylinder Brace and T - Subaru Models (inc. 2015-2021 WRX / STI / 2014-2018 Forester XT)
Radium Engineering
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Every product is sourced from authorized manufacturers or distributors. If something isn’t right with fitment or condition, we’ll work with you to resolve it fairly.
NO GUESSWORK,
JUST PARTS THAT WORK.
Let’s finish that car.
PRODUCT DETAILS ▾
RallySport Direct carries highly engineered products designed to improve the performance and longevity of your vehicle brought to you by Radium Engineering.
This is the Radium Engineering Master Cylinder Brace. This particular brace is compatible with LHD 15-21 WRX models, 15-21 STI models, as well as 14-18 Forester XT models. What happens, is under heavy braking conditions, the firewall can flex also providing a spongy braking feel. Radium Engineering understands that the master cylinder flexes in an arcuate path, therefore, a specially designed CNC machined foot contacts the master cylinder to counteract the arc movement. Preload is adjusted with the anodized aluminum green bolt, it is then locked into place with a stainless steel jam nut. Installation is simple and can be performed in 30 minutes or less.
HIGHLIGHTS:
- 6061 billet construction
- Specially-designed CNC foot contacts
- Pre-load can be adjusted with the anodized aluminum green bolt and can be locked in place with a stainless steel jam nut
- Will reduce firewall flex under heavy braking conditions to provide a more solid feel, and better feedback
WHY WE CARRY THIS ▾
We only list parts we’d run ourselves or recommend to a friend building a real car. If it feels vague, unverified, or inconsistent, it doesn’t make the cut.
- Fitment-first mindset — no “universal” roulette
- Brand reputation matters — we favor proven manufacturing
- Support that actually responds with real answers
WHAT TO EXPECT ▾
This is the clean path: correct fitment, clean install, and results that match the intent.
- Install-ready experience with correct mounting where provided
- Finish that holds up to real driving, not just photos
- Selections on this page drive the exact fitment shipped
TRUST, BUILT INTO THE PROCESS.
Anyone can list parts. We curate what belongs on a serious build. Our goal is simple: fewer surprises, cleaner installs, and confidence when you hit “Buy.”
Fitment checked
We prioritize vehicle-specific listings and clear selection logic so you’re not gambling on compatibility.
Brand discipline
Proven manufacturing and consistent quality matter more than hype. We bias toward what actually holds up.
Real support
If you have a question, you’ll get a human answer that helps you finish the build — not a copy-paste shrug.
RallySport Direct carries highly engineered products designed to improve the performance and longevity of your vehicle brought to you by Radium Engineering.
This is the Radium Engineering Master Cylinder Brace. This particular brace is compatible with LHD 15-21 WRX models, 15-21 STI models, as well as 14-18 Forester XT models. What happens, is under heavy braking conditions, the firewall can flex also providing a spongy braking feel. Radium Engineering understands that the master cylinder flexes in an arcuate path, therefore, a specially designed CNC machined foot contacts the master cylinder to counteract the arc movement. Preload is adjusted with the anodized aluminum green bolt, it is then locked into place with a stainless steel jam nut. Installation is simple and can be performed in 30 minutes or less.
HIGHLIGHTS:
- 6061 billet construction
- Specially-designed CNC foot contacts
- Pre-load can be adjusted with the anodized aluminum green bolt and can be locked in place with a stainless steel jam nut
- Will reduce firewall flex under heavy braking conditions to provide a more solid feel, and better feedback
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