Radium Engineering GR86 / BRZ Master Cylinder Brace
Radium Engineering GR86 / BRZ Master Cylinder Brace
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
Designed specifically for the GR86, this product provides an OEM-plus fit with platform-focused engineering. It is well suited for enthusiasts looking to enhance performance, reliability, or appearance while maintaining proper fitment and drivability. Browse additional GR86 parts in our GR86 collection.
Overview
The Radium Engineering brake master cylinder brace installs on the LH strut tower and provides needed support and immediate response for hard braking. The billet aluminum design is lightweight yet very stiff. The strategically selected adjustment screw prevents damage to the master cylinder housing with the use of a large diameter aluminum head. The included stainless steel "easy-on" locknut prohibits any potential slippage of the set preload.
How It Works
When the brake pedal is depressed, not all the mechanical energy is transferred into hydraulic brake line pressure. Unfortunately some of the energy is wasted flexing the thin firewall. With the Radium Engineering master cylinder brace, firewall flexing is eliminated allowing all of the brake pedal input force to be applied for stopping the vehicle. This enables a firmer pedal feel and more responsive brake system.
Features
- CNC machined from solid 6061 aluminum
- Black anodized and laser engraved with Radium logo
- Aluminum preload adjustment bolt (will not harm the aluminum MC)
- Stainless steel "easy-on" lock nut
- Stainless steel replacement M6 bolts
Installation
Using factory mounting holes, installation just takes minutes. This brace does not require any cutting, drilling, or modifications to the vehicle. Compatible with all left hand drive variations as well as manual and automatic transmission models.
Compatibility
- 2013-2021 FRS/GT86/BRZ
- 2022+ GR86/BRZ
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.
Designed specifically for the GR86, this product provides an OEM-plus fit with platform-focused engineering. It is well suited for enthusiasts looking to enhance performance, reliability, or appearance while maintaining proper fitment and drivability. Browse additional GR86 parts in our GR86 collection.
Overview
The Radium Engineering brake master cylinder brace installs on the LH strut tower and provides needed support and immediate response for hard braking. The billet aluminum design is lightweight yet very stiff. The strategically selected adjustment screw prevents damage to the master cylinder housing with the use of a large diameter aluminum head. The included stainless steel "easy-on" locknut prohibits any potential slippage of the set preload.
How It Works
When the brake pedal is depressed, not all the mechanical energy is transferred into hydraulic brake line pressure. Unfortunately some of the energy is wasted flexing the thin firewall. With the Radium Engineering master cylinder brace, firewall flexing is eliminated allowing all of the brake pedal input force to be applied for stopping the vehicle. This enables a firmer pedal feel and more responsive brake system.
Features
- CNC machined from solid 6061 aluminum
- Black anodized and laser engraved with Radium logo
- Aluminum preload adjustment bolt (will not harm the aluminum MC)
- Stainless steel "easy-on" lock nut
- Stainless steel replacement M6 bolts
Installation
Using factory mounting holes, installation just takes minutes. This brace does not require any cutting, drilling, or modifications to the vehicle. Compatible with all left hand drive variations as well as manual and automatic transmission models.
Compatibility
- 2013-2021 FRS/GT86/BRZ
- 2022+ GR86/BRZ
