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Steeda Mustang Rear Chassis X-Brace - 05-14

Steeda Mustang Rear Chassis X-Brace - 05-14
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Mustang Rear Chassis X-Brace
555-5093 - Mustang Rear Chassis X-Brace - $279.95
Our Price: $279.95
Market Price: $307.95
You Save: $28.00
  Installation Info
Time to Install
About 1 Hour
Level of Difficulty
Tools Needed
Basic Tools
Install Instructions
Instructions are in PDF format. Get the free Adobe PDF Reader, here.
  Product Description
Our latest rear chassis X-brace addresses the fact that not everyone wants to get rid of their rear seats for the added benefit of the rear chassis brace. Obtaining the rear seat delete parts from the Boss 302 can be an expensive task, and having a rear seat delete made can be a challenge as well.

After listening to these concerns from our customers, the result is our Steeda Rear Chassis X-brace that does not require a rear seat delete. This brace installs in the chassis area between the rear wheel wells behind the rear seats which effectively couples this part of the rear structure together to increase chassis rigidity.

Besides engineering the benefit of not having to get rid of the rear seats, this design is a significant improvement over Ford's original design for the Boss 302. Our X-brace mounts to the rear shock towers instead of attaching to the sheet metal behind the rear seats. This design is more effective and distributes the loads between the rear shocks, springs and the chassis, and not just the sheet metal of the vehicle. The result is much more effective chassis deflection reduction with improved suspension compliance over a sheet metal mount design.

This brace can be used as a bolt on installation or welded for maximum effectiveness.

Note: Does not fit convertibles or vehicles with Shaker/Mach 1000 stereo systems.

Product Benefits
  • Allows the rear seats to be retained!
  • Much more effective than other designs
  • Bolt on or weld on installation
  Product Fitment
 This product fits the following vehicles
  • 2014 Mustang GT Automatic
  • 2014 Mustang GT Manual
  • 2014 Mustang GT500 Manual
  • 2014 Mustang V6 Automatic
  • 2014 Mustang V6 Manual
  • 2013 Mustang Boss Manual
  • 2013 Mustang GT Automatic
  • 2013 Mustang GT Manual
  • 2013 Mustang GT500 Manual
  • 2013 Mustang V6 Automatic
  • 2013 Mustang V6 Manual
  • 2012 Mustang Boss Manual
  • 2012 Mustang GT Automatic
  • 2012 Mustang GT Manual
  • 2012 Mustang GT500 Manual
  • 2012 Mustang V6 Automatic
  • 2012 Mustang V6 Manual
  • 2011 Mustang GT Automatic
  • 2011 Mustang GT Manual
  • 2011 Mustang GT500 Manual
  • 2011 Mustang V6 Automatic
  • 2011 Mustang V6 Manual
  • 2010 Mustang GT Automatic
  • 2010 Mustang GT Manual
  • 2010 Mustang GT500 Manual
  • 2010 Mustang V6 Automatic
  • 2010 Mustang V6 Manual
  • 2009 Mustang Bullitt Manual
  • 2009 Mustang GT Automatic
  • 2009 Mustang GT Manual
  • 2009 Mustang GT500 Manual
  • 2009 Mustang V6 Automatic
  • 2009 Mustang V6 Manual
  • 2008 Mustang Bullitt Manual
  • 2008 Mustang GT Automatic
  • 2008 Mustang GT Manual
  • 2008 Mustang GT500 Manual
  • 2008 Mustang V6 Automatic
  • 2008 Mustang V6 Manual
  • 2007 Mustang GT Automatic
  • 2007 Mustang GT Manual
  • 2007 Mustang GT500 Manual
  • 2007 Mustang V6 Automatic
  • 2007 Mustang V6 Manual
  • 2006 Mustang GT Automatic
  • 2006 Mustang GT Manual
  • 2006 Mustang V6 Automatic
  • 2006 Mustang V6 Manual
  • 2005 Mustang GT Automatic
  • 2005 Mustang GT Manual
  • 2005 Mustang V6 Automatic
  • 2005 Mustang V6 Manual
  Product Reviews
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Reviewed by rickm12
09/26/2013 - 04:13:40 PM

What a great idea!! Add an x brace and keep the rear seats!! Yes please! Great price for the convenience of keeping your rear seats. Oh yeah and the handling is great!lol
Reviewed by stang64
09/13/2013 - 05:30:14 PM
The icing on the cake

I have a lot of Steeda suspension parts on my car and this just tops it all off. I feel like it completed my handling project. The shipment came fast and when I opened it up it was beautifully designed. Thanks for an awesome product!
Reviewed by blickenstaff
09/05/2013 - 05:08:24 PM
Great Product!

Nothing but good things to say about this X-brace. Great quality, installed easily, and I can definitely feel the handling improvement. Plus, it was a great place to mount my custom stereo amps!!! Lastly, great customer service.
Reviewed by drad13025
07/11/2013 - 01:40:35 PM
Fantastic Purchase!

This is a great product and what makes it better is that it looks great when you open the truck and you keep the back of both worlds. install was a little tricky and I would suggest air gun to removed the shock nuts and might need a little larger drill bit to fit for the bolts (unless you are welding). it makes a huge difference in stability, plants the live axle on the ground at high speed turns. definitely worth the time and money!
Reviewed by manuel
07/03/2013 - 11:42:58 PM
Great workmanship

Ok, finished my install on the X Brace...not a one hour job for sure. Although I must say it is an awesome piece of work that Steeda did with this brace. FYI, if you have the diff catch can, you will have to relocate.


Reviewed by PSIHouston
06/27/2013 - 08:56:47 PM
Huge Improvement

I can't believe how much this tightened everything up in the back of the car. It made a bigger difference than upgrading my rear sway bar. The back is firmly planted and steady in the corners. It even eliminated much of the clunks when driving over steep parking lot entrances.

The install took 2 hours only because getting the nuts on the bolts in the limited space is tricking if you have small fat hands. I didn't have to use a jack as the brace slide right over the shocks without any problem.

I can't think of a better upgrade to your suspension for the price.
Reviewed by PSIHouston
06/26/2013 - 07:16:31 PM
Great for the Rear

Adding this made a huge difference in the stability and response of the rear end. It made a much bigger difference than upgrading the rear sway bar.