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$179.99
Dual 7 Inch Brake Booster Master Cylinder Combo, 1 Inch Bore
Dual 7 Inch Brake Booster Master Cylinder Combo, 1 Inch Bore

Dual 7 Inch Brake Booster Master Cylinder Combo, 1 Inch Bore

Universal Fit, Disc/Drum Brake System Type, Vacuum Diaphragm Dual Brake Booster Type

10 Reviews | 19 Answered Questions
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Select a vehicle to verify fitment.
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Dual 7 Inch Brake Booster Master Cylinder Combo, 1 Inch Bore
Dual 7 Inch Brake Booster Master Cylinder Combo, 1 Inch Bore
Dual 7 Inch Brake Booster Master Cylinder Combo, 1 Inch Bore
Dual 7 Inch Brake Booster Master Cylinder Combo, 1 Inch Bore
Dual 7 Inch Brake Booster Master Cylinder Combo, 1 Inch Bore
Dual 7 Inch Brake Booster Master Cylinder Combo, 1 Inch Bore
Dual 7 Inch Brake Booster Master Cylinder Combo, 1 Inch Bore
Dual 7 Inch Brake Booster Master Cylinder Combo, 1 Inch Bore
Dual 7 Inch Brake Booster Master Cylinder Combo, 1 Inch Bore
Dual 7 Inch Brake Booster Master Cylinder Combo, 1 Inch Bore
Dual 7 Inch Brake Booster Master Cylinder Combo, 1 Inch Bore
Dual 7 Inch Brake Booster Master Cylinder Combo, 1 Inch Bore
Dual 7 Inch Brake Booster Master Cylinder Combo, 1 Inch Bore
Dual 7 Inch Brake Booster Master Cylinder Combo, 1 Inch Bore
Dual 7 Inch Brake Booster Master Cylinder Combo, 1 Inch Bore
Dual 7 Inch Brake Booster Master Cylinder Combo, 1 Inch Bore
Dual 7 Inch Brake Booster Master Cylinder Combo, 1 Inch Bore
Dual 7 Inch Brake Booster Master Cylinder Combo, 1 Inch Bore
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Dual 7 Inch Brake Booster Master Cylinder Combo, 1 Inch Bore
Dual 7 Inch Brake Booster Master Cylinder Combo, 1 Inch Bore
Dual 7 Inch Brake Booster Master Cylinder Combo, 1 Inch Bore
Dual 7 Inch Brake Booster Master Cylinder Combo, 1 Inch Bore
Dual 7 Inch Brake Booster Master Cylinder Combo, 1 Inch Bore
Dual 7 Inch Brake Booster Master Cylinder Combo, 1 Inch Bore
Dual 7 Inch Brake Booster Master Cylinder Combo, 1 Inch Bore
Dual 7 Inch Brake Booster Master Cylinder Combo, 1 Inch Bore
Dual 7 Inch Brake Booster Master Cylinder Combo, 1 Inch Bore
Dual 7 Inch Brake Booster Master Cylinder Combo, 1 Inch Bore
Dual 7 Inch Brake Booster Master Cylinder Combo, 1 Inch Bore
Dual 7 Inch Brake Booster Master Cylinder Combo, 1 Inch Bore
Dual 7 Inch Brake Booster Master Cylinder Combo, 1 Inch Bore
Dual 7 Inch Brake Booster Master Cylinder Combo, 1 Inch Bore
Dual 7 Inch Brake Booster Master Cylinder Combo, 1 Inch Bore
Dual 7 Inch Brake Booster Master Cylinder Combo, 1 Inch Bore
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Part # 91031411
$179.99
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  • Compact 7" diameter booster allows for installation under the floor or on a firewall of almost any vehicle
  • Dual diaphragm booster design increases booster performance especially on lower vacuum engines
  • 1" bore dual outlet master cylinder effectively operates modern disc brake systems
  • 3/8"-24 IFF outlets on the master cylinder allows common 3/16" brake lines to connect directly to it without the need for adapters
  • All new components for long life and hassle free braking

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Details

Brake System Type:
Disc/Drum
Brake Booster Type:
Vacuum Diaphragm Dual
Brake Booster Diameter:
7 Inch
Outlet Fitting:
3/8"-24 (4)
Master Cylinder Material:
Steel
Master Cylinder Bore Size:
1 Inch
Brake Booster Material:
Steel
MFG. Part #:
91031411
Overall Length:
13.25"
Master Cylinder Port Sizes:
3/8-24
Bolt Hole Pattern:
3.38" x 3.38"
Centerline of Holes:
3.38"
Reservoir Included:
Yes
Sold in Quantity:
Kit

Info

Compact 7" dual diaphragm booster assembly for installation under floor or on firewall of almost any vehicle. Cast iron master cylinder has a 1" 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. 

Notes

  1. Brake System Builder's Tip (Link)
  2. Booster Tech Tip (GIF)

Specs

  • 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

Important Messages:

  • Get FREE shipping when your order includes this item and exceeds $99! Ground shipping only in the contiguous US.
Some parts are not legal for use in California or other states with similar laws/regulations

Related Products

What's In The Kit

Each kit from Speedway Motors is carefully packaged and delivered right to your door. Below is a list of all the items you should expect to receive when you order this kit. Some of these items may also be available for sale individually if you're here looking for replacement parts.
  • Speedway Dual Diaphragm Power Brake Booster, 7 Inch, Chromate Finish
    Part # 91031432
    Qty x 1
  • Universal Power/Manual Master Cylinder, 1 Inch Bore
    Part # 91031445
    Qty x 1

More Like This

Reviews

Q & A

Videos & Articles
  •
    Bel Air Brake Pedal Rebuild
    Street Rod Tech Kevin W. talks about the first steps in his plans of a disc brake upgrade on his 1954 Chevy Bel Air, upgrading the pedal to an under-dash setup and adding a booster.
  • 56 F100 Brake Ideas
    In this Tech Tip, John responds to a customer request for our recommendations on brake kits for his ’56 F100.

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