Disc/Disc Black Proportioning Valve Combo Kit Designed for Wilwood Master Cylinders

Black Disc/Disc Proportioning Valve Kit for Wilwood Oval Aluminum Tandem Master Cylinders

Building a blacked-out engine bay? This kit was designed specifically to fit Wilwood’s oval-style aluminum tandem master cylinders, and its black finish is made to match black Wilwood masters such as the 260-8555-BK and 260-8556-BK. You get a clean, matched look from the master cylinder to the valve, with everything needed to mount and plumb it in one box.

At the heart of the kit is a black disc/disc fixed proportioning valve. It’s a proven GM-style valve, popular on street rods and early muscle cars, that balances front-to-rear brake pressure so your rear discs don’t lock up before your fronts. The valve mounts on the left side with the included black bracket, and two stainless steel lines with fittings run from the master cylinder to the valve. Stainless mounting hardware is included too.

Need disc/drum instead? We’ll swap in a disc/drum valve at no extra charge. Just leave us a note at checkout.

What’s Included

• Black disc/disc fixed proportioning valve
• Black proportioning valve bracket (left-side mount)
• Stainless steel lines and fittings (master cylinder to valve)
• Stainless steel mounting hardware

Please note: The master cylinder is not included. It appears in the photos to show how the kit looks once installed.

Why Choose This Kit?

• Designed to fit Wilwood oval aluminum tandem master cylinders
• Black finish matches black Wilwood masters like 260-8555-BK and 260-8556-BK
• Complete kit, with valve, bracket, lines, and hardware
• Free swap to disc/drum on request

Questions about your setup? Call us at 866-601-4455 (M–F 8–4 EST).