Product Summary

Universal Fit, Firewall Position, Tandem Outlet Count

  • These high-tech corvette-style master cylinders were designed using OE specifications and 100% tested
  • They have a 1" bore and are suited for disc/drum combinations
  • Each master cylinder is ported on both the left and right sides, allowing for installation in many different applications
  • Chrome plated finish
  • The wide body and low profile gives this master cylinder the clearance you need when installing in tight areas
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Key Specs

MFG. Part #91031447
BrandSpeedway Motors
Master Cylinder Bore Size1 Inch
Master Cylinder MaterialAluminum
FinishChrome
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Speedway Motors 91031447 Details

These high-tech corvette-style master cylinders were designed using OE specifications and 100% tested.  They have a 1" bore and are suited for disc/drum combinations. Each master cylinder is ported on both the left and right sides, allowing for installation in many different applications. This exclusive design features a mating flange that works with applications requiring 3-1/8” through 3-3/8” bolt patterns.  These master cylinders will work with manual or power brake systems and can be quickly changed with the included adapter plug to fill the deep well in the piston face for the pedal push rod or booster pin.  The wide body and low profile gives this master cylinder the clearance you need when installing in tight areas and yet it maintains a large volume of fluid necessary for 2 and 4 wheel disc brake applications. 

  • Aluminum body
  • Chrome plated finish
  • 1" bore
  • 3/8-24 IFF ports on either side
  • Mount spacing is 3-3/8" on center
  • Works with power or manual brake systems
  • Compact, for installation under floor or on firewall
  • Suited for either disc/disc or disc/drum combinations 
  • Stroke of this master cylinder is approximately 1-1/16"

Learn more about selecting the proper master cylinder for your vehicle by reading our tech article.Brake System Selection. 

Item Details

Dual reservoir master cylinder
1" bore, Dual Port, Plain

Charts

Speedway Motors 91031447 Specifications

KEY SPECS
MFG. Part #91031447
BrandSpeedway Motors
Master Cylinder Bore Size1 Inch
Master Cylinder MaterialAluminum
FinishChrome
GENERAL
PositionFirewall
Brake System TypeDisc/Drum
Outlet CountTandem
Reservoir TypeIntegral
Reservoir IncludedYes
Outlet Fitting3/8"-24 IFF
Sold in QuantityEach
Notesplugs 9103190 steel, 9103186 brass

Ratings & Reviews

5

4 Reviews

Overall Assessment

Customers highly appreciate the product for its exceptional quality and functional design. Its sleek chrome finish is frequently lauded, not only for its great aesthetics but also its performance. Highly practical, the product is a hit among classic car enthusiasts, effortlessly enhancing both a '55 and '57 Chevy. Users are extremely satisfied, often recommending repurchase, underscoring its usability and reliability. This product solidly outperforms competitors, proving its superior quality.

5

4 reviews

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Filter by Ratings

Yes

5.0

3 years ago

Gus

Western mi.

Verified

Nice chrome ,works good.

Would Recommend

good product>

5.0

3 years ago

larry

new london mo.63459

Verified

looks great on our 55 chevy,have another for our 57 chevy.

Would Recommend

No problems worked great

5.0

6 years ago

Cr

Central South Carolina

Verified

Looks great would buy again

Would Recommend

I would buy this again

5.0

6 years ago

Tim MoparMan

Phoenix Arizona

Verified

Nice chrome finish

Showing 4 of 4 reviews

Questions & Answers

4 Questions • 4 Answers

Can this be used with Drum/Drum ?

by Austin

• 3 years ago

1 answer

Which port is for the front brakes, the one closest or farthest from the mounting flange?

by Mark

• 9 years ago

1 answer

Is there a rebuild kit for this?

by rickybobby

• 10 years ago

1 answer

Is master cylinder 91031447 similar to master cylinder 91031428 where it has a deep well for a manual brake system plus an adaptor for use with a booster system?

by Ernie

• 10 years ago

1 answer

4 of 4 questions shown

Customer Impersonation Script