Wilwood Adjustable Proportioning Valve M10 x 1.0 BF Inlet/Outlet — 100–1000 psi Knob-Style, Clear Anodized Aluminum

This compact proportioning valve from Wilwood is built for universal fit applications where reliable, on-the-fly brake bias adjustment matters. Machined from lightweight aluminum and finished with clear anodizing, the valve uses inverted flare bubble (BF) 10 mm x 1.00 female inlet and outlet fittings and a user-friendly knob to dial in pressure from 100 to 1000 psi. It is intended for integration into hydraulic brake systems where precise modulation between circuits is required.

How does the knob adjust brake pressure and bias?

The rotating knob changes the internal metering to alter downstream pressure and therefore brake bias between front and rear circuits or other split systems. Adjustment is continuous throughout the torque range, letting you incrementally increase or decrease line pressure without disassembly.

• Knob operation for tool-free tuning while installed
• Adjustable span: 100–1000 psi for broad tuning capability
• Fine-thread internal mechanism for predictable response

What fittings and installation considerations should I know?

This valve uses 10 mm x 1.00 female inverted flare bubble (BF) connections at both inlet and outlet, matching many performance brake hose and hard-line terminations. It’s designed for universal fit; however, verify line thread type, routing space, and mounting hardware before installation.

• M10 x 1.0 BF female inlet and outlet—verify line compatibility
• Lightweight aluminum body minimizes added mass in the brake circuit
• Clear anodized finish resists corrosion and provides clean visibility

Will this valve work with my braking system and pressure requirements?

The valve’s adjustable range (100–1000 psi) covers most passenger and performance hydraulic brake systems where proportioning or bias fine-tuning is needed. It is not vehicle- or ABS-specific; use with ABS systems requires compatibility checks and possibly consultation with a brake specialist.

• Suitable for many sport and custom brake setups requiring bias control
• Not a direct replacement for vehicle-specific ABS proportioning modules
• Recommended to bleed and test system after installation to confirm function

How durable and serviceable is the Wilwood 260-12627?

Constructed from machined aluminum and finished in clear anodize, the assembly is built to resist corrosion and typical workshop wear. The knob-style design simplifies adjustment; internal seals and components are serviceable by trained technicians if needed during maintenance.

• Clear anodized aluminum reduces corrosion risk and surface wear
• Knob design prevents need for repeated disassembly when tuning
• Individual unit sold—inspect fittings and seals during routine brake service

Who is this for? This Wilwood knob-style proportioning valve suits performance enthusiasts, custom fabricators, and shop technicians who need a compact, adjustable solution for manually tuning brake bias in hydraulic systems. If you require component-level control of circuit pressure and your brake lines use 10 mm x 1.00 BF fittings, this valve provides a durable, easy-to-operate option for fine adjustment without major system changes.