Master Cylinder .625in Bore GS Compact

The Master Cylinder .625in Bore GS Compact by Wilwood is a crucial hydraulic component designed for builders and enthusiasts who require precise brake system performance in tight engine bay configurations. This compact master cylinder is suitable for dual-circuit braking applications where space constraints limit the use of full-size units, making it ideal for custom street rods, vintage restorations, and purpose-built track vehicles.

Wilwood's engineering ensures reliable pressure modulation without compromising stopping power, whether for a weekend cruiser or a competition-focused build. The .625-inch bore diameter is specifically designed to balance pedal feel and hydraulic pressure delivery across modern brake caliper designs. The construction features cast ductile iron, which, along with precision-honed cylinder walls, guarantees consistent performance across repeated brake cycles while minimizing wear.

This compact GS configuration is particularly beneficial for mechanics and fabricators retrofitting older vehicles with modern four-wheel disc brakes or when packaging brake systems in limited-clearance engine compartments. Its dimensions of 6 x 2.3 x 10.1 inches allow it to fit where conventional cylinders cannot, maintaining the structural integrity necessary for high-pressure hydraulic systems.