HFM BM57 Big Bore 17/16" (27mm) LHD Brake Master Cylinder for Nissan 240SX, 300ZX, Silvia (ABS/Non-ABS)

Tired of Spongy Brakes? Upgrade to the HFM BM57 Big Bore Master Cylinder.
Excessive brake pedal travel and a mushy, unresponsive feel erode confidence on the street and cost you crucial stopping distance on the track. The HFM.Parts BM57 is the definitive performance upgrade for your left-hand drive (LHD) Nissan chassis, engineered to replace and outperform the factory master cylinder.
The key to this upgrade is the Massive 17/16″ (27mm) Piston Bore. By dramatically increasing the piston size, the BM57 moves more fluid with less pedal input, instantly translating to a firmer pedal feel and shorter, more confident stops. It’s the simplest way to transform your braking response without deleting your brake booster.
Pro Tip: Soften your pedal feel by increasing the brake booster size. It pairs perfectly with our BM57 for customised braking.

Key Advantages & Performance Features

🔥 Lifetime Warranty:
Covered against defects for life, ensuring complete confidence in your braking system.
Firmer, More Responsive Pedal Feel:
The 17/16″ (27mm) Big Bore piston provides a massive boost in braking power, eliminating sponginess and reducing pedal travel.
Corrosion-Proof Black Geomet® Coating:
Features a premium, environmentally resistant, chromium-free finish for superior durability and a clean look in your engine bay.
Universal LHD Compatibility:
Includes a tapered grub screw for seamless, no-modification installation on all ABS and Non-ABS Nissan Skyline, Silvia, and 300ZX models.
Big Bore vs. Booster Delete:
Opt for this big bore master cylinder for enhanced performance without deleting your brake booster. It is ideal if you want to maintain or soften pedal feel by upsizing the booster (Read More).

Technical Specifications Snapshot

• Piston Bore: 17/16" (27mm)
• Split Point: 35kgf (498psi) x 0.4
• Outlet Threads: M10 x 1.0 with Double Flare (45-degree taper)
• Ports: Side-mounted (Compatible with banjo fittings)
• Fluid Level Sensor: Swappable to either side