Classic Performance Products Proportioning Valve Disc/Drum Or Disc/Disc Under Mount Brass

Classic Performance Products:


  • Brass Finish
  • Hybrid Design
  • Meters F/R Brake Pressure
  • Bracket Included

Classic Performance Products Brass Under Mount Proportioning Valve for Disc/Drum Or Disc/Disc applications.

This proportioning valve (PVKUB0) from Classic Performance Products is perfect for the classic owner who wants to free up space in their engine bay or is already making brake upgrades. This product uses a hybrid design to morph a distribution block and proportioning valve together, and works for both disc/drum and disc/disc applications. It comes with a mount which tucks the valve under your master cylinder.

Features and Benefits:
- Works on disc/disc and disc/drum setups
- Includes bracket
- Includes low pressure brake warning switch
- Includes lines to master cylinder

When your brakes are first applied, the rear brakes act with more brake pressure. The purpose is to activate the rear brakes first, and maintain a slightly higher rear brake pressure as the braking force increases up to the split point. After the brake pressure has risen to the split point, the rate of rise within rear brake system will decrease to prevent rear wheel lockup.

Residual valves will not be necessary with 4 wheel disc brakes. The front brake will maintain a small residual pressure, so they are quicker to act, while their action is better controlled. The failsafe isolation valve function remains 100% intact. These setups are available in aluminum, brass, black and chrome. 1967 and newer vehicles require the pressure differential warning light socket and pigtail as an important safety item. This kit is perfect for a clean look and improved braking performance.

California Residents: Proposition 65 Warning

Vehicle Fitment

This product will fit the following Bronco years:

This product will fit the following C10 years:

This product will fit the following F-100 years:

  • 1948,
  • 1949,
  • 1950,
  • 1951,
  • 1952,
  • 1953,
  • 1954,
  • 1955,
  • 1956,
  • 1957,
  • 1958,
  • 1959,
  • 1960,
  • 1961,
  • 1962,
  • 1963,
  • 1964,
  • 1965,
  • 1966,
  • 1967,
  • 1968,
  • 1969,
  • 1970,
  • 1971,
  • 1972,
  • 1973,
  • 1974,
  • 1975,
  • 1976,
  • 1977,
  • 1978,
  • 1979,

This product will fit the following Mustang years:

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