Dual 7 Inch Brake Booster Master Cylinder Combo, 1-1/8 Inch Bore
Universal Fit, Vacuum Diaphragm Dual Brake Booster Type, 1.13" Bore Size, 7" Overall Diameter
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Compact 7" dual diaphragm booster assembly for installation under floor or on firewall of almost any vehicle. Cast iron master cylinder has a 1-1/8" bore and is suited for disc-disc or disc-drum combinations.
Master cylinder features two 3/8"-24 inverted flare ports on each side (plugs are included for ports not in use).
Learn more about selecting the proper master cylinder for your vehicle by reading our tech article. Brake System Selection.
- Pushrod-to-mounting flange is 5-1/2"
- Four bolts on 3-3/8" centers
- 5" thick from master cylinder mount to firewall face
- 4" long firewall mount face to end of pushrod
- Pushrod stud is 3/8" fine thread
- (4) qty 3/8"-24 outlet ports (2 plugs included)
- 8" from mount to outer edge
What's In The Kit
Power/Manual Master Cylinder, 1-1/8 Inch BorePart # 91031440Qty x 1
Speedway Dual Diaphragm Power Brake Booster, 7 Inch, Chromate FinishPart # 91031432Qty x 1
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Q & A
Tim demonstrates the brake assembly with a Wide 5 drum brake and Speedway's new self-energizing backing plate.
Tim explains the process of adjusting Buick Finned Drums to fit Speedway's self-energizing backing plate assembly.
Speedway Motors employee Pat O. talks about the CPP Hydroboost Brake System.
In this Tech Tip, John responds to a customer request for our recommendations on brake kits for his ’56 F100.
Heath finally gets the opportunity to work on rear disc brakes. He explains some things that went great during this project, and not so great. Find out what the advantages and disadvantages are of running disc brakes.