Compact Master Cylinder .625in

The Wilwood Compact Master Cylinder .625in (model 260-6087) is a precision-engineered hydraulic brake component designed for high-performance automotive applications where space constraints demand a compact footprint without compromising stopping power. Built by Wilwood, a leader in brake system innovation, this master cylinder serves custom builders, drag racers, road course competitors, and street rod enthusiasts who require reliable brake modulation in tight engine compartments. Whether you're fabricating a custom brake system or upgrading a legacy vehicle build, this compact unit delivers consistent pressure delivery across multiple brake circuits.

The .625-inch bore diameter positions this master cylinder in the compact range, making it ideal for lightweight vehicles, custom applications, or installations where traditional full-size units won't fit. Wilwood's engineering ensures rapid fluid displacement and pressure buildup, translating to responsive brake pedal feel and superior modulation—critical factors when coordinating brake balance in performance driving. The compact form factor (5.9 × 3.2 × 8.7 inches) integrates seamlessly into custom brackets and firewall-mounted configurations, while the 1.05-pound weight keeps unsprung mass minimal. Precision-machined internals guarantee repeatable performance across repeated brake events, essential for track use or demanding street applications where thermal stability matters.

This master cylinder benefits drivers and builders tackling space-limited projects—custom hot rods, mid-engine conversions, competition vehicles, and restoration projects with non-OEM brake layouts. Compatibility depends on your specific plumbing configuration, brake line diameter, and proportioning valve setup; verify your system's pressure requirements and piston area ratios before installation. Pairing this compact unit with a quality dual-reservoir system or aftermarket proportioning valve ensures balanced braking across front and rear axles. Mounting hardware and brake lines are sold separately, allowing full customization to your vehicle's unique geometry and performance targets.