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Steeda Mustang Full Subframe Connectors - Powdercoated - 79-04

Steeda Mustang Full Subframe Connectors - Powdercoated - 79-04
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Mustang Full Length Subframe Connectors
555-5246 - Mustang Full Length Subframe Connectors - Powdercoat - $188.95
Our Price: $188.95
Market Price: $207.85
You Save: $18.90
  Installation Info
Time to Install
About 3 1/2 Hours
Level of Difficulty
Tech Recommended
Tools Needed
Shop Tools
Install Instructions
Instructions are in PDF format. Get the free Adobe PDF Reader, here.
  Product Description
Whether you Mustang only gets driven to the grocery store or driven hard on the road course or drag strip, every 79-2004 Mustang needs subframe connectors!

Steeda's full length subframe connectors are the best full length subframe connectors available for your 1979-2004 Mustang. Perfect for daily drivers, or serious cars with high horsepower, sticky tires or competition suspension.

Not only will Steeda full length subframe connectors provide unmatched strength, but will save you time in installation over other brands!

Steeda starts with beefy 1.5 x 2 x .083 square tubing that spans the full length of the floor pan providing unmatched chassis rigidity, improved handling, and improved ride quality with reduced impact harshness.

Our full length subframes are reinforced at each bend and include Steeda’s exclusive torque box reinforcing plate for the strongest attachment possible to the rear subframe for maximum effectiveness.

Steeda Full length subframe connectors also feature a one-piece reinforced seat bolt cross brace. Some subframe cross braces have 8 individual gussets which must be carefully positioned and welded on. Other other kits use no reinforcements at all in their cross braces. Steeda's cross braces have reinforcing gussets built-in, for greater strength with less welding.



Other full length subframe connector designs do not attach all the mounting point plates to the connector, leaving you to weld them during installation adding time and complexity. Steeda full length subframe connectors come with all mounting point tabs pre-welded to the subframe connector. Another Steeda exclusive.

Full-length subframe connectors are available in bare steel or black powdercoated finishes. The black powdercoat can be scraped and welded over, and then only the weld joints need to be spray-painted vs. the whole kit needing to be spray-painted.

Note: 1996-98 Mustang Cobras will require modifications to the transmission crossmember mounting points. Call our sales reps for details.

Product Benefits
  • Dramaticly reduce chassis flex
  • Reduces impact harshness
  • The strongest subframe connectors available on the market
  • Available powdercoated or bare
  Product Fitment
 This product fits the following vehicles
  • 2004 Mustang Cobra Manual
  • 2004 Mustang GT Automatic
  • 2004 Mustang GT Manual
  • 2004 Mustang Mach 1 Automatic
  • 2004 Mustang Mach 1 Manual
  • 2004 Mustang V6 Automatic
  • 2004 Mustang V6 Manual
  • 2003 Mustang Cobra Manual
  • 2003 Mustang GT Automatic
  • 2003 Mustang GT Manual
  • 2003 Mustang Mach 1 Automatic
  • 2003 Mustang Mach 1 Manual
  • 2003 Mustang V6 Automatic
  • 2003 Mustang V6 Manual
  • 2002 Mustang Bullitt Manual
  • 2002 Mustang GT Automatic
  • 2002 Mustang GT Manual
  • 2002 Mustang V6 Automatic
  • 2002 Mustang V6 Manual
  • 2001 Mustang Cobra Manual
  • 2001 Mustang GT Automatic
  • 2001 Mustang GT Manual
  • 2001 Mustang V6 Automatic
  • 2001 Mustang V6 Manual
  • 2000 Mustang Cobra R Manual
  • 2000 Mustang GT Automatic
  • 2000 Mustang GT Manual
  • 2000 Mustang V6 Automatic
  • 2000 Mustang V6 Manual
  • 1999 Mustang Cobra Manual
  • 1999 Mustang GT Automatic
  • 1999 Mustang GT Manual
  • 1999 Mustang V6 Automatic
  • 1999 Mustang V6 Manual
  • 1998 Mustang Cobra Manual
  • 1998 Mustang GT Automatic
  • 1998 Mustang GT Manual
  • 1998 Mustang V6 Automatic
  • 1998 Mustang V6 Manual
  • 1997 Mustang Cobra Manual
  • 1997 Mustang GT Automatic
  • 1997 Mustang GT Manual
  • 1997 Mustang V6 Automatic
  • 1997 Mustang V6 Manual
  • 1996 Mustang Cobra Manual
  • 1996 Mustang GT Automatic
  • 1996 Mustang GT Manual
  • 1996 Mustang V6 Automatic
  • 1996 Mustang V6 Manual
  • 1995 Mustang Cobra Manual
  • 1995 Mustang GT Automatic
  • 1995 Mustang GT Manual
  • 1995 Mustang V6 Automatic
  • 1995 Mustang V6 Manual
  • 1994 Mustang Cobra Manual
  • 1994 Mustang GT Automatic
  • 1994 Mustang GT Manual
  • 1994 Mustang V6 Automatic
  • 1994 Mustang V6 Manual
  • 1993 Mustang 2.3L Automatic
  • 1993 Mustang 2.3L Manual
  • 1993 Mustang 5.0L V8 Automatic
  • 1993 Mustang 5.0L V8 Manual
  • 1993 Mustang Cobra Manual
  • 1992 Mustang 2.3L Automatic
  • 1992 Mustang 2.3L Manual
  • 1992 Mustang 5.0L V8 Automatic
  • 1992 Mustang 5.0L V8 Manual
  • 1991 Mustang 2.3L Automatic
  • 1991 Mustang 2.3L Manual
  • 1991 Mustang 5.0L V8 Automatic
  • 1991 Mustang 5.0L V8 Manual
  • 1990 Mustang 2.3L Automatic
  • 1990 Mustang 2.3L Manual
  • 1990 Mustang 5.0L V8 Automatic
  • 1990 Mustang 5.0L V8 Manual
  • 1989 Mustang 2.3L Automatic
  • 1989 Mustang 2.3L Manual
  • 1989 Mustang 5.0L V8 Automatic
  • 1989 Mustang 5.0L V8 Manual
  • 1988 Mustang 2.3L Automatic
  • 1988 Mustang 2.3L Manual
  • 1988 Mustang 5.0L V8 Automatic
  • 1988 Mustang 5.0L V8 Manual
  • 1987 Mustang 2.3L Automatic
  • 1987 Mustang 2.3L Manual
  • 1987 Mustang 5.0L V8 Automatic
  • 1987 Mustang 5.0L V8 Manual
  • 1986 Mustang 5.0L V8 Automatic
  • 1986 Mustang 5.0L V8 Manual
  • 1986 Mustang V6 Automatic
  • 1986 Mustang V6 Manual
  • 1985 Mustang 5.0L V8 Automatic
  • 1985 Mustang 5.0L V8 Manual
  • 1985 Mustang V6 Automatic
  • 1985 Mustang V6 Manual
  • 1984 Mustang 5.0L V8 Automatic
  • 1984 Mustang 5.0L V8 Manual
  • 1984 Mustang V6 Automatic
  • 1984 Mustang V6 Manual
  • 1983 Mustang 5.0L V8 Automatic
  • 1983 Mustang 5.0L V8 Manual
  • 1983 Mustang V6 Automatic
  • 1983 Mustang V6 Manual
  • 1982 Mustang 5.0L V8 Automatic
  • 1982 Mustang 5.0L V8 Manual
  • 1982 Mustang V6 Automatic
  • 1982 Mustang V6 Manual
  • 1981 Mustang 5.0L V8 Automatic
  • 1981 Mustang 5.0L V8 Manual
  • 1981 Mustang V6 Automatic
  • 1981 Mustang V6 Manual
  • 1980 Mustang 5.0L V8 Automatic
  • 1980 Mustang 5.0L V8 Manual
  • 1980 Mustang V6 Automatic
  • 1980 Mustang V6 Manual
  • 1979 Mustang 5.0L V8 Automatic
  • 1979 Mustang 5.0L V8 Manual
  • 1979 Mustang V6 Automatic
  • 1979 Mustang V6 Manual
  Product Reviews
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Reviewed by willy-c
12/23/2011 - 10:38:50 AM
Do This First!

I just installed these on my '93 LX Hatch. I had previously added 17" wheels, stiffer springs, urethane bushings and camber/caster plates. Each mod made the ride a bit more harsh and noisy, now I know why. The body was flexing more because of the stiffened suspension. The Steeda sub-frame connectors changed that immediately! Floor pan flex is eliminated. No more "rocking chair" effect. It's noticeable in clutch and shifter action. My clutch leg and shifting arm were actually flexing the floor pan! Ride has improved now that the suspension is doing the work.

PS: Buy them painted. I spent more than the difference in cost on quality rattle can primer and paint.
Reviewed by MachRMan
07/31/2011 - 01:04:43 PM
You need these!!

This was the last installed part on my 04 Mach 1. perfect fit and I could really feel the difference. Car is very stiff and allows the suspension to work properly by elimintaing the body flex.
Reviewed by PoweredbyFord
07/29/2011 - 07:05:51 PM
Excellent Product for Stiffening!

I used this on my 88 Mustang LX build. It really helped stiffen the frame together. Since Fox's and sn95's all have incomplete frame rails Steeda's subframe connectors are an excellent solution. I would recommend it as one of the most important first bolt-on upgrades! It assists with traction, handling, and braking!
Reviewed by thetacowarrior
07/14/2011 - 12:30:03 AM
Single best upgrade on my '90 hatch

I got these a while ago, the ones I have are the full length chromoly connectors with seat braces, we welded them up on my '90 5.0L hatch, and the difference was night and day. The car rides smoother, handles much better, and even seems to accelerate better off the line. They are by far the single best mod I have made to date, and I would recommend them to anybody who owns an old flexy fox body.
Reviewed by roush727
07/14/2011 - 06:25:29 PM
A Must Have

These subframe connectors made a huge difference on the way my 02 mustang handled. Ride felt much more straight when flooring it. I was skeptical when I bought them thinking they would not make that much of a difference but after putting them on which was a perfect fit these made a huge difference highly recommended
Reviewed by Njbudman81
07/13/2011 - 10:19:51 PM
Great product

this is a very important modification on a mustang. Made the car ride alot better and not twist. At first I ordered s&w but they didn't fit. Went back to the speedshop and they ordered me these and I can't be happier. A high quality product.
Reviewed by frijol79
frijol79 bought "Steeda Mustang Full Subframe Connectors - Powdercoated - 79-04" on our website
02/05/2013 - 12:56:05 AM
Noticed difference

Best upgrade I have done to my car yet. As soon as I got in my Mach it felt like a different car. Car was stiff and I didn't think I would notice but when cornering is were you feel it the most.
Will buy Steeda again.