Stop Sooner: The 27mm High Volume Brake Master Cylinder Upgrade
The Toyota 86 and Subaru BRZ are celebrated for their handling, but the stock braking system often leaves performance drivers wanting a firmer, more responsive pedal. The HFM.Parts High Volume Master Cylinder directly addresses this by significantly increasing the bore size from the factory 25.4mm to a high-performance 27mm.
This modification allows a higher volume of fluid to be circulated with less pedal effort. The result is a substantial reduction in pedal travel, the elimination of that “mushy” feeling, and a dramatically more responsive and confident braking feel – perfect for track days or spirited driving.
Key Advantages & Performance Features
Engineered for the ZN6, GR86, ZC6, and ZD8 chassis,WILL not fit GT86 LHD version this upgrade provides:
- Massive 27mm Bore: Increases fluid displacement over the OEM 25.4mm bore for a much firmer pedal and reduced travel distance.
- Improved Stopping Power: Recommended for both stock and multi-piston big brake caliper upgrades.
- Swappable Fluid Sensor: Designed for seamless installation on both LHD and RHD models; simply swap the fluid sensor connector to the opposite side.
- Corrosion-Proof Geomet® Coating: Features a durable, environmentally friendly finish for heat protection and a clean, dark look in the engine bay.
Technical Specifications Snapshot
- Piston Bore: 27mm (Upgraded from 25.4mm Stock)
- Design: High Volume Brake Master Cylinder
- Coating: Geomet® Finish
- Fitment: Universal LHD/RHD (Sensor swappable)
What's Included
1x Brake Master Cylinder
Customer Installs
GR86 LHD ONLY
Please double check your brake line position against the product image.
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Our compatibility list is based on OEM specifications. Variations may exist due to vehicle sub-models or other factors — verify fitment before purchasing.
Install Guides
To swap the fluid sensor to the opposite side: Under the reservoir, you’ll see a lock tab. Push that in and slide the sensor out. Reverse the sensor back in on the opposite side of the reservoir and push it back in.
Our Story
We weren't always HFM.Parts; we were Holford Motors. Our brand's identity was forged not in an office, but on the local circuits in the high-stress world of competitive drifting. Our ultimate testbed was our Nissan S14 Drift car, driven by champion Luke Fink. Pushing that car to its limits exposed a crucial truth: achieving genuine, repeatable performance meant relying on components that simply weren't available affordably on the market.
The HFM.Parts brand was born
We made the commitment to design and manufacture the uncompromising, high-quality performance parts that we, as competitive racers, demanded ourselves. Every component you see is a solution conceived, tested, and proven by us. When you choose HFM.Parts, you are investing in components engineered by racers, for racers, ensuring your vehicle delivers its maximum performance potential.
Modifying vehicles is a specialist task and requires the knowledge and experience of competent
individuals to
be conducted safely.
We recommend this product be installed by a competent person. Instructions are given with every
order
where
available, however, If you would like a copy prior to ordering, you're welcome to contact us
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