0.750" Bore Master Cylinder

Its 0.750" bore diameter is standard for most external slave cylinder setups, delivering sufficient hydraulic volume for full release bearing actuation while maintaining a firm, progressive pedal feel. The integral 1.4-ounce reservoir is a key convenience, keeping fluid directly at the cylinder and eliminating the need for remote reservoir mounting, banjo fittings, and additional lines. This simplifies installation for street-driven builds where a clean aesthetic is as important as function. The unit is constructed from lightweight, corrosion-resistant cast aluminum. Wilwood's Girling-style layout features a 2.25" on-center mounting pattern that is compatible with most aftermarket pedal assemblies and original firewall mounting locations. The 3/8"-24 threaded outlet port provides flexibility for hydraulic line routing, accepting banjo bolts or inverted flare fittings. An improved plastic screw-on filler cap helps protect the fluid from moisture contamination. The compact body is under 4" from the flange to the front, making it suitable for very tight engine compartments. This master cylinder is compatible with DOT 3, DOT 4, or DOT 5.1 brake fluid.