Product Summary

Firewall Position, Disc/Drum Brake System Type, Natural

  • Disc / Drum only
  • 1" bore master cylinder
  • Has Ford style teardrop casting
  • Fits Ford bolt pattern only
  • Premium Cast iron construction, zinc-plated lid for rust and corrosion prevention
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Key Specs

MFG. Part #91664054
BrandSpeedway Motors
Master Cylinder Bore Size1 Inch
Master Cylinder MaterialCast Iron
FinishNatural
See more specs

Need To Know

Quick and Easy Returns

Return Policy

Speedway Motors 91664054 Details

Tired of seeing aftermarket master cylinders on Ford Mustangs? So are we. That's why were bringing back the correct casting number "Teardrop" master cylinder that doesn't look out of place in your engine compartment. Give your car a OEM style replacement master cylinder with the right valve for the job. Comes complete with the disc/drum valve and keeps your car stopping the way it should be. Stop fishtailing or nosediving with the wrong valve and get this easy to install kit and fix those braking problems for good!

1964-1973 Ford Mustang Master Cylinder kit

  • Disc/Drum
  • 1" Bore Master Cylinder
  • Ford Style Teardrop" Casting #227161
  • Fits Ford bolt pattern only
  • Cast iron with zinc lid

Original O.E.M. Style MCK7161 Embossed Mustang Lid Availalbe Here.

Charts

Specs

3.132 mounting ceneter to center

Speedway Motors 91664054 Specifications

KEY SPECS
MFG. Part #91664054
BrandSpeedway Motors
Master Cylinder Bore Size1 Inch
Master Cylinder MaterialCast Iron
FinishNatural
GENERAL
PositionFirewall
Brake System TypeDisc/Drum
Outlet CountTandem
Reservoir TypeIntegral
ColorNatural
Reservoir IncludedYes
Master Cylinder Cap IncludedYes
Mounting Bracket IncludedYes
Outlet Fitting3/8"-24 IFF
Outlet Fitting 29/16"-18 IFF
Sold in QuantityKit

Ratings & Reviews

4.9

7 Reviews

Overall Assessment

Overall, customers perceive the product as a high-quality, practical solution for brake system conversions. Its compatibility with various car models, such as a 58 Ford and a 1966 Thunderbird, underscores its versatility. Customers have successfully used it to transition from drum to disc brakes and single to dual bowl master cylinders, improving safety. The product is noted for its ease of installation and effectiveness, with a straightforward conversion process enhancing its usability. Customers not only recommend this product for its excellent performance but also consider it superior to competitors. Material quality is also rated highly, as the product "bolts right up" and works perfectly.

4.9

7 reviews

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Filter by Ratings

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4.0

a year ago

frustrated

Spokane, WA

Verified

I would only recommend this MC kit if I was also able to tell them they also needed to buy an odd adaptor part to be able to attach to normal factory brake lines. They don't tell you that a head of time so you have to buy the adaptor even though the kit was suppose to be the right one for the stock vehicle.

Would Not Recommend

Sure

5.0

a year ago

Rabbit

Adams, TN

Verified

Mounted to my 53 F100

Would Recommend

Have not installed. Need instructions.

5.0

3 years ago

Tex-Czech

Longview, TX

Verified

Converting from drum to disc brakes for safety.

Would Recommend

Great

5.0

5 years ago

Jocko

Oklahoma

Verified

Worked great for converting to dual brake system on 58 Ford.

Would Recommend

Just what I needed! Worked great!

5.0

5 years ago

GM

Ashland City TN

Verified

Worked great on project F1 truck.

Would Recommend

Yes I would recommend this to others works great

5.0

6 years ago

N/A

Corpus Christi Tx

Verified

Refurbishing a 1966 Thunderbird and upgraded from single bowl master cylinder to a dual bowl

Would Recommend

Good quality, bolted right up & works perfectly.

5.0

7 years ago

Chris W.

CT

Verified

Great customer support, fast shipping.

Showing 7 of 7 reviews

Questions & Answers

1 Question • 1 Answer

Hi, what is inside and outside master cylinder diam. Below cap and gasket looking into resovoir..

by Don

• 3 years ago

1 answer

1 of 1 questions shown

Fitment

    Customer Impersonation Script