Master Cylinder 1in Bore 3/8in Ports Aluminum

The Master Cylinder 1in Bore 3/8in Ports Aluminum from ALLSTAR PERFORMANCE is a precision hydraulic brake component engineered for high-performance vehicles and custom automotive builds. Designed with a 1-inch bore and integral aluminum reservoir, this master cylinder delivers consistent, reliable brake pressure modulation across demanding driving conditions. Whether you're building a hot rod, street machine, or performance race car, this aluminum master cylinder provides the foundation for a responsive, fade-resistant braking system.

This master cylinder features a 1-inch bore diameter paired with 3/8-inch port connections, allowing optimized fluid flow to wheel cylinders or calipers while maintaining precise pressure balance. The aluminum construction provides superior heat dissipation compared to cast iron alternatives, reducing brake fluid degradation during extended use and helping prevent pressure loss on long highway runs or track sessions. The original-style design integrates the reservoir directly into the housing, eliminating the need for remote fluid containers and reducing plumbing complexity in tight engine bays. Each unit arrives as a complete kit, ready for installation without requiring additional components or modifications.

This master cylinder suits builders and enthusiasts working on custom brake system layouts where bore size and port configuration are critical to matching wheel cylinders or caliper displacement ratios. The aluminum design is particularly valued in applications where weight reduction matters—classic car restorations, vintage race conversions, and lightweight performance builds. Installation requires proper bench bleeding and system flushing to ensure air-free operation; verify port thread compatibility with your existing hardline or hose fittings before purchase to guarantee a leak-free installation.