Product Summary

Ford 9 Inch, Rear Position, 58.75" Overall Width

  • Direct fit bare steel 9-inch Ford axle housing for your 79-93 Foxbody Mustang
  • Pre-welded shock mounts and stock location leaf spring pads for stock ride height
  • Includes 31 spline performance axle package with new bearings, seals, retainers, and T-bolts
  • New Big Ford style ends - accepts 2.5" offset brakes
  • Upgrades to factory Ford 5 on 4-1/2 wheel bolt pattern with 1/2-20 thread wheel studs

Comes as a Kit

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Key Specs

MFG. Part #99047993
PositionRear
Overall Width58.75"
Axle Splines31
Axle TypeSemi-Floating
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Need To Know

Quick and Easy Returns

Return Policy

Speedway Motors 99047993 Details

  • Housing length: 53-3/4 inches (from flange-to-flange)
  • Total wheel-to-wheel mounting surface width is 58-3/4 inches (from hub-to-hub)
  • Direct replacement Ford 9-inch housing rear end for your 79-93 Fox Mustang
  • Pre-welded mounting pads retain stock leaf spring mounting location
  • Uses factory shock mounting location to retain stock shock length
  • 9-inch housing features stock 79-93 Fox body Mustang rear end width flange to flange for perfect fit
  • Works with any Ford 9-inch housing center section (sold separately)
  • Big Ford new style “Torino” axle flange accepts drum or disc brakes
  • New 31 spline axles come with bearings, lock rings, axle seals, and wheel studs installed
  • Axles feature 5x4.5 Ford and 5x4.75 GM car bolt patterns with 1/2-20 threaded studs

A Direct-Fit Ford 9-inch Rear End Housing for Your 79-93 Fox Body Mustang

There is certainly no denying the popularity of Ford’s venerable 9-inch rear axle when it comes to high performance street and racing applications. It is probably a safe bet there are more non-Ford vehicles on the road (and track) with a Ford 9-inch rear end under them than Ford ever shipped off their assembly lines! That is saying a lot right there. From the stronger housing design to the huge aftermarket support in axles, differentials, ring and pinion gears, and more, the Ford 9-inch rear end is the performance axle housing to use, without a doubt.

For those building up a 79-93 Fox Mustang, Speedway Motors offers a bolt-in 9-inch Ford rear end housing for your build that is a direct swap for stock Fox body Mustang rear ends. This Fox Mustang rear end housing is made from premium steel and is fully welded, including brand new “Torino” big Ford axle housing ends. The housing maintains the 79-93 Fox body rear end width and retains the stock shock mount locations as well. The axle’s upper and lower control arm mounting brackets are welded in their stock mounting locations for a bolt-in solution. This allows you to retain stock ride height characteristics or you can lower the rear of your Mustang via rear coilovers or other options.

Includes Fully Assembled Axles Ready for Your Differential and Center Section

Our 79-93 Foxbody 9-inch rear end housing package includes strong 31-spline performance axles with bearings and bearing lock rings already pressed into place on the axles. The axles feature dual Chevy/Ford bolt pattern of 5 on 4-3/4 and of 5 on 4-1/2 with 1/2-20 press-in threaded studs preinstalled in the 5 on 4-1/2 Ford pattern. Finally, we include the axle retainer brackets and the correct 9-inch T-bolts and nuts to secure the axles and your drum or disc brake kit of choice.

Additional hardware includes 10 press-in studs with nylon locking nuts for the main 9-inch housing to center section assembly, and a screw in axle vent fitting. All your new Ford 9-inch housing needs for completion is a complete center section with your choice of differential and gearing and drum or disc brake package. Our complete 9-inch 3rd members are the perfect choice to finish your third gen Fox Mustang 9-inch rear end build. Replace your tired 79-93 Ford Mustang Fox body rear end with our Ford 9-inch rear end in your Foxbody Mustang while maintaining the stock rear end width and upgrade to the strength and vast options the Ford 9-inch offers.

Speedway Motors 99047993 Specifications

KEY SPECS
MFG. Part #99047993
BrandSpeedway Motors
PositionRear
Overall Width58.75"
Axle Splines31
Axle TypeSemi-Floating
Brakes IncludedNo
Wheel Studs IncludedYes
Wheel Bolt Pattern (in.)5x4.5 in. | 5x4.75 in.
Material TypeSteel
FinishNatural
Tube O.D.3"
Housing MaterialSteel
Hardware IncludedYes
Rotors IncludedNo
Rotor DiameterNot Included
Bolt Pattern5 on 4.5"
GENERAL
Sold in QuantityKit
Notes1/2"-20 wheel studs, 2" long, 0.685" knurled
Axle Shafts IncludedYes
Third Member IncludedNo
Ring and Pinion IncludedNo
Wheel Stud Thread Size1/2"-20
Bearings IncludedYes
Seals IncludedYes
Differential IncludedNo
Ring Gear Size9 Inch
Housing ColorNatural
Cut to FitNo
Standard Pinion LocationOffset Pinion / Centered 3rd Member

Ratings & Reviews

4.9

9 Reviews

Overall Assessment

Customers are satisfied with the product's quality, usability, and fitting. First impressions indicate a well-manufactured product that's yet to disappoint. Users praised its ease of installation even in a non-professional setup, like a garage floor. The product's unpainted state is seen positively, as it allows buyers to customize it before use. While longevity can't be fully commented on, initial use suggests reliable performance. Superior in both price and quality, our product comes highly recommended against its competitors.

4.9

9 reviews

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I definitely would buy again

5.0

7 months ago

T-Body

Sardinia ohio

Verified

Procise, exactly perfect fit in my 79 Fairmomt

Would Recommend

I definitely would buy again

5.0

7 months ago

T-Body

Sardinia ohio

Verified

I just installed this rear end in my 79 Ford Fairmont as and so far no installation issues.

Would Recommend

I would buy this product again

5.0

7 months ago

T-Body

Sardinia ohio

Verified

I just purchased this rear end for my mustang and it's perfect for it.

Would Recommend

Fox body 9" housing and axle shafts

4.0

9 months ago

Turbo Notch

Moses Lake, WA

Verified

Product appears to be exactly what I need and well built.

Would Recommend

Highly Recommend for all fox body applications

5.0

a year ago

Racin Rick

Seattle, WA

Verified

Very nice looking parts. Went in smooth. Now will see if it can take Drag Racing abuse. Will update after use. Housing comes raw, so expect to paint it immediately to avoid rust.

Would Recommend

Yes

5.0

2 years ago

Bill

Shepherd Tx

Verified

Ease of assembly

Would Recommend

Very pleased with this purchase so far

5.0

5 years ago

deportemall

Africa

Verified

Looks like a well made product that should work fine..... I have not installed it yet but first impressions are as expected....

Would Recommend

Great product ! Great fit! Gear quality!

5.0

6 years ago

Zach

Decatur il

Verified

Everything fit great! Was not painted which I actually didn't mind. Painted it the color I wanted before install. Drove it and to my knowledge it all works good so far! Don't know if the 3rd member is noisy or not that I ordered from here cause the car is to loud! ;) would highly recommend price and quality was all there.

Would Recommend

Great product

5.0

6 years ago

Zach

Decatur il

Verified

Fit pretty good installed by myself on a garage floor with ease. Haven't put to many miles on it with the new third member I ordered from here yet only about 15 miles on it all but so far so good. Price was on point I painted it pretty I'm happy with the products

Would Recommend

Showing 9 of 9 reviews

Questions & Answers

3 Questions • 3 Answers

What is the hub face measurement?

by Big Daddy

• 3 years ago

1 answer

Do you know what the axle offset is in this rear end? I'm trying to figure out the offset for wilwood brakes.

by Foxer

• 3 years ago

1 answer

I need a 5" wider axle like the 2005-2014 mustangs in the four link for a fox body. Can you do this?

by Bryan

• 8 years ago

1 answer

3 of 3 questions shown

Fitment

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