1967-1972 Chevy Truck 9" Power Brake Booster Master Cylinder Disc Disc Valve Kit


This is a Brand new 9" Dual Zinc brake booster with master cylinder, mounting brackets rod and clevis, and Disc/Disc Prop Valve kit for a 1967 1968 1969 1970 1971 1972 Chevy  Truck. The 4 port master cylinder in this kit has a 1" Bore. 

The Disc/Disc proportioning valve has a zinc finish.  This valve is also call a combination valve, as it performs all of the necessary valving functions with a disc brake conversion.  

Package Includes:

  • Zinc 9" Dual Bendix Power Brake Booster 
  • Zinc 4 port (9/16" and 1/2") Master Cylinder with 1" Bore
  • Disc Disc Proportioning Valve with Side Mounting Kit
  • Mounting Brackets/Rod/Clevis for 1967-1972 Chevy Truck

The proportioning valve has a zinc finish.  This valve is also call a combination valve, as it performs all of the necessary valving functions with a disc brake conversion.  These functions include the following:

  • Proportioning:

As more force is applied to the brakes and the car begins to lean forward, less braking force is needed in the rear.  This valve decreases the pressure to the rear, preventing lock up.

  • Metering:

There is no metering function with the disc/disc setup.

  • Residual Pressure:

The disc/disc setup does not require this pressure.

  • System Failure Switch:
This valve has a system failure switch that will alert you when half of your braking system is not working properly.


This is a Brand new 9" Zinc brake booster with master cylinder, mounting brackets rod and clevis, and Disc/Drum Prop Valve kit for a 1967 1968 1969 1970 1971 1972 Chevy  Truck. The 4 port master cylinder in this kit has a 1" Bore. 

The Disc/Drum proportioning valve has a zinc finish.  This valve is also call a combination valve, as it performs all of the necessary valving functions with a disc brake conversion.  

Package Includes:

  • Zinc 9" Power Brake Booster 
  • Zinc 4 port (9/16" and 1/2") Master Cylinder with 1" Bore
  • Disc Drum Proportioning Valve with Side Mounting Kit
  • Mounting Brackets/Rod/Clevis for 1967-1972 Chevy Truck

Professional Installation is Highly Recommended (No Instruction Included)


6772-ZINC + 9002Z + 3511 + PV2 Side Kit




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