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Maximum Motorsports Full Length Subframe Connectors - Black (79-04 All)

AmericanMuscle no longer carries the Maximum Motorsports Full Length Subframe Connectors - Black (79-04 All). Please check out Ford Mustang K-Members, Subframe Connectors, & Braces for an updated selection.
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AmericanMuscle no longer carries the Maximum Motorsports Full Length Subframe Connectors - Black (79-04 All). Please check out Ford Mustang K-Members, Subframe Connectors, & Braces for an updated selection.

Features & Details

  • XL Series Full Length subframe connectors
  • Powered Coated Black Finish
  • 95% Stronger then the other brand
  • 53% stronger then MM previous connectors
  • Extends from Rear control arm to the firewall for maximum results
Improved Design. Maximum Motorsports has stepped it up again. Not that you should expect any less from the innovator of the subframe connectors but this time they have surpassed themselves. With 53% more rigidity then their standard subframe connectors and 95% more then most on the market, these will keep your car straight as an arrow whether it's off the line performance or back road turns you need to tackle.

Strength. The XL series subframe connector is longer, thicker, and mounts with more surface area to weld then any other on the market. It's 1.5" x 2" x .083" thick rectangular tubing extends from the rear control arms mounting location near the rear tires, all the way to the firewall just before the front tires. With that much coverage you'll be sure to have the most a strong bond and plenty of clean metal to weld them onto.

Application. Maximum Motorsports designed these subframe connectors to fit all 1979 to 2004 V6, GT, Bullitt, Mach 1, and Cobra Mustangs. Even Roush and Saleen Edition Mustangs can benefit from this upgrade as well.

Technical Note. Test fitting before welding. 1996-98 Cobras will require modifications to the transmission crossmember mounting flanges.

What's in the Box
  • (2) Subframe connectors
  • (2) Seat brackets
  • (4) Bolts
  • (4) Nuts
  • (8) Flat washers
  • (2) Flat brackets
Installation Info

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Customer Reviews (13) Write a Review

Overall Rating 4.9

out of 5 stars

Installation Time:Full Day

Installation Cost:$100-$250

  • Handling Improvement 4.75 4.8
  • Fit 4.5 4.5
  • Bang For Your Buck 5 5

  • 5/5

    Installation Time: Afternoon

    June 30, 2013

    Impressive results

    While I just got springs, shocks, and other items to improve my cornering and launch capabilities, the installation of these parts definetly improved the car going around corners and I can get back into the gas sooner. From a dead stop, more straight away and less twitch. Shoulda done it sooner.


    Year: 2001 Submodel: GT Beaverton, OR, USA

    Helpful (2)

  • 5/5

    Installation Time: Shop Install

    Installation Cost: $100-$250

    May 23, 2013

    Solid Investment

    These are some of the beefiest subframes you can buy. A great way to improve overall performance and cornering. Make sure you have a professional install these.


    Year: 2003 Submodel: Cobra Cleveland, OH, USA

    Helpful (3)

  • 5/5

    Installation Time: Afternoon

    May 09, 2013

    Great Product

    These are one of the first upgrades you should do to your mustang. All performance suspension systems need a solid platform to work off of and these deliver just that. Great improvement in chassis stiffness with these subframe connectors. They fit very well and installation was a breeze


    Year: 2003 Submodel: GT Wisconsin

    Helpful (3)

  • 5/5

    Installation Time: Afternoon

    May 05, 2012

    Best built full lengths out there.

    These were a little harder to install then the other brands that i have put on customers cars, but i got these for my car and installed them. The fit was a little off, but my guess is from the years of the cars body twisting, which is acceptable. When I got finished welding them on, I took the car out for a spin...I was amazed at how well the car handled! Max Motorsports connectors were the best feeling, handling connectors i have ever installed. These will be the only connectors i recommend to my customers!


    Year: 2001 Submodel: Cobra PA

    Helpful (6)

  • 5/5

    August 03, 2011

    Firm up your notch!

    My likes: better ride, handling, cornering and overall controll along with a stiffer(in a good way) feel. My dislikes: these had to be tweaked quite a bit to fit perfect, it's going to be fun if someone has jacked the floorpan before. Overall completely worth the money, should've done these when I got the car, my 91 notch feels so much better.

    Jordan Hamilton

    Year: 1991 Submodel: Other

    Helpful (3)

  • 4/5

    January 19, 2011


    Handling dramatically improved feel much more confident in stabilty through corners. Only complaint is lining them up for welding they were slightly off...


    Helpful (3)

  • 5/5

    October 27, 2010

    Nice FLSFCs

    Very nice. Like night and day after install. Should be one of the 1st mods on any vert.


    Helpful (3)

  • 5/5

    October 08, 2010

    A must for convertibles

    Just had the MM connectors welded in on my '00 GT convert. What a differnce. Almost as tight as a fixed roof GT. Squeaks and creaks are gone.


    Helpful (6)

  • 5/5

    July 19, 2010

    Best mod,July 19,2010

    This is one of the first mod to be done to you car,made the car much more stiffer,no more twisting body.


    Helpful (3)

  • 5/5

    April 30, 2010

    best mod so far

    I Had these installed in my 03 10th anniversary cobra convertible.. before I had them the car had a lot of road vibration under hard acceleration and braking and also had some front cowl shake once these bad boys were in, it felt way stiffer no more shake. im very happy with the product and would recommend it as one of the first mods you do if you own a convertible weather its a street car or race car..


    Year: 2003 Submodel: Cobra

    Helpful (9)

  • 5/5

    July 18, 2009

    Makes a Difference

    Definitely a must, I felt a difference instantly. Also, could tell right away that the car was stiffer and was not twisting anymore when going up a curbed driveway.


    Helpful (11)

  • 5/5

    February 01, 2009

    Great Mod

    Bought these after having the car for over a year and wish i had them sooner. Made the car much more stable feeling and handling improved. All 99-04 mustangs should have these.


    Helpful (7)

  • 5/5

    August 28, 2008

    Great connectors

    I just bought these and had them welded on. Very high quality pieces of metal. Had no problems and it attached well. If you need connectors then you gotta go with MM.


    Helpful (6)

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