Valve Proportioning Combo Assy

The Wilwood Valve Proportioning Combo Assy (Model 260-11179) is a critical hydraulic control component engineered for custom brake system builds and performance upgrades. This proportioning valve assembly gives builders and restorers the ability to fine-tune brake bias between front and rear circuits, ensuring balanced stopping power across all four wheels. Whether you're upgrading a classic car to modern braking standards, installing a custom brake kit, or dialing in a high-performance suspension setup, this combo assembly handles the pressure management that keeps your vehicle stopping safely and predictably.

Built from aluminum for lightweight durability, the proportioning valve features a knob-type adjustment mechanism that allows real-time tuning of brake pressure across a wide 150–1200 psi operating range. Both inlet and outlet connections use 3/8-inch inverted flare female fittings, the industry standard for hydraulic brake lines, making integration straightforward in most brake system layouts. The adjustable proportioning design prevents rear-wheel lock-up during hard braking and compensates for weight transfer, load changes, and different brake pad compounds—all critical factors in achieving consistent braking performance across varied driving conditions.

Professional mechanics, hot rod builders, and track-focused enthusiasts rely on Wilwood proportioning valves to complete custom brake installations where OEM systems are unavailable or inadequate. The compact 7.15 x 1.65 x 8-inch footprint and minimal 0.72 lb weight make it ideal for confined engine bays and weight-sensitive builds. Installation requires basic hydraulic line routing and the ability to test-drive and adjust the knob for optimal brake balance; this is not a plug-and-play component but rather a precision tool that rewards proper setup with superior braking feel and safety margins.