Wilwood® 260-8420 - Clear Anodize Proportioning Valve (Lever Type, 1/8-27 NPT Inlet & Outlet)

Wilwood® - Clear Anodize Proportioning Valve Wilwood® - Clear Anodize Proportioning Valve Wilwood® - Clear Anodize Proportioning Valve Dimensions Wilwood® - Company Overview Wilwood Authorized Dealer
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Clear Anodize Proportioning Valve (260-8420) by Wilwood®. Level Adjust, 1/8-27 NPT Inlet & Outlet, 3/8-24 IF Female Inlet & Outlet Fit. Valve features an adjustable knee point from 100 to 1000 PSI. The proportioning rate is 57% from the desired knee point onward. This proportioning valve has six preset points actuated by moving a lever allowing racers to quickly adjust brake bias during a race. The lever “clicks” into the six positions for positive adjustment. Valves weigh only 6.1 ounces, and have two .25” side mounting holes spaced 1.00” apart. Inlet / outlet ports are 1/8-27 NPT.

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Wilwood - About


  • Cast Aluminum and Steel
  • Clear Anodize Finish
  • 57% Rate
  • Made in USA

To properly bleed the brake system, begin with the caliper farthest from the master cylinder. For fixed mount calipers with two bleed screws on top, bleed the outboard bleed screw first, then bleed the inboard screw. Repeat this procedure until all calipers have been bled, ending with the caliper closest to the master cylinder. Once the system has been bled, the pedal should maintain a consistent, firm feel. If the pedal returns to a spongy feel after it has rested from the bleeding process, this is an indication that air still exists in the system. If this occurs, repeat the bleeding process until all air has been purged and the pedal retains a firm feel.

Do not attempt to operate the vehicle until the system has been fully tested under controlled conditions in a safe location. After the system has been bled, checked for leaks, and the proper pedal resistance and travel have been determined, make a series of low speed stops, then gradually progress to normal operating speeds.

Adjustable proportioning valves are designed for tuning and balancing custom brake systems on performance, racing, and other types of special purpose vehicles. They are not designed as direct replacements for any OEM application.

Brand: Wilwood       Part Number: 260-8420
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Wilwood Engineering designs and manufactures high-performance disc brake systems. Since founding in 1977, we have developed a substantial matrix of brake components and engineering techniques that allow us to quickly and reliably create brake systems for almost any application. Their core ability is the rapid development of custom engineered brake systems using a combination of off-the-shelf and custom components. In addition to designing and manufacturing brakes for all types of competitive motor sports, Wilwood also manufactures brake systems and components for agricultural equipment, industrial applications, utility vehicles, snowmobiles, quads, motorcycles and military vehicles.

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