Wilwood Rear Brake Bias Valve, Knob Adjustable, M10 x 1 Bubble-Flare Inlet and Outlet

Metric bubble-flare ports distinguish this rear pressure-control valve from the inverted-flare and pipe-thread versions. The knob adjusts the amount of rear-circuit pressure reduction to suit the balance of a properly designed custom brake system. Disc brake systems and components are the focus of Wilwood Engineering's design and manufacturing work for street-performance, specialized and motorsport applications. Bill Wood founded the Camarillo, California company in 1977. Its master cylinders, calipers, fittings, valves, brake lines and rotors are chosen according to the needs of the complete brake system.

Technical Details

• Manufacturer part number: 260-12627
• Material: Aluminum / Steel
• Finish: Clear Anodize
• Maximum pressure reduction: 57%
• Mounting: Two 0.25-inch holes on 1.00-inch centers
• Use: Custom brake-system proportioning, normally in the rear circuit; not a direct OEM replacement
• Pressure connections: M10 × 1.0 bubble-flare inlet and outlet
• Adjustment: Rotary knob

Fitment & Compatibility

Connect matching M10 x 1 bubble-flared lines to the marked inlet and outlet. The quarter-inch side mounting holes are spaced one inch apart. Use the exact port specification for this version; the linked general adjustment sheet illustrates the separate NPT valve and does not change these metric connections.

Manufacturer Documents

• Wilwood product specifications
• Wilwood DS488 instructions and specifications
• Wilwood FL162 instructions and specifications

For help choosing the correct service or conversion component, contact PMB Performance with the existing brake-system details. Our team has over 20 years of experience working through parts and fitment requirements.