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Steeda S550 Mustang Rear IRS Subframe Support Braces

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£ 259.00
In Stock
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Steeda S550 Mustang Rear IRS Subframe Support Braces
  • Steeda S550 Mustang Rear IRS Subframe Support Braces
  • Steeda S550 Mustang Rear IRS Subframe Support Braces
  • Steeda S550 Mustang Rear IRS Subframe Support Braces
  • Steeda S550 Mustang Rear IRS Subframe Support Braces

With the release of the new S550 Mustang, Steeda knew that addressing the IRS system would be a top priority. Being the first production Mustang with an IRS since the 03/04 Cobra’s, we knew there would be a great opportunity to capitalise on Ford’s new piece by giving it the Steeda advantage. As with any suspension system, deflection is an issue if it’s present. Anytime a piece is moving, twisting or vibrating when it should be stationary is a major problem. One of the areas team Steeda wanted to focus on was the rear IRS sub frame.

As you have seen with our IRS Sub frame Bushing Support System, it limits the movement of the sub frame by filling in the voids of the OE bushings. With Steeda’s IRS Sub frame Support Braces, we have taken the S550 Mustang rear suspension to another level!

Our Steeda S550 Mustang Rear IRS Sub frame Braces for 2015 Mustang GT and EcoBoost (non-convertible) is built in-house from 4130 chrome moly steel and powder coated silver metal flake, this part isn’t only strong - it also looks great under your new Mustang! What we did was tie together 3 very important points on the S550 chassis. We utilised existing threaded holes in the rocker panel (the strongest part of the body) and connected that to the front mounting location of the IRS sub frame and the rear mount of the lower control arm and toe link. Connecting these 3 points together not only adds rigidity that was lacking in the rear, but also more control of the whole car.

Also, unlike competitors kits that  only replace the factory bracket, our Steeda kit supports that bracket while connecting to 2 additional locations, therefore providing twice the support! Best part about this kit is it uses all existing holes in the chassis so the car doesn’t have to be modified in any way and adds no NVH whatsoever.

Product Benefits

  • Better handling for more stable cornering
  • Limits IRS sub frame movement
  • No permanent modifications necessary
  • No added NVH
  • 50% more connecting points
  • Reduces wheel hop
  • Fully compatible with Steeda's popular Jacking Rails
  • Lifetime warranty
  • Normally in stock in the UK

Part number:  

V8 & Ecoboost, Manual and automatic
Not For Convertible

Customer reviews
Shopping Satisfaction
Solid Quality.
Ordered with Steeda S550 Mustang IRS Base Pack + Steeda S550 Mustang Billet Aluminum Vertical Links - POLYBUSH. Have not installed yet, but will be done professionally in the next weeks.
Roman M.
Shopping Satisfaction
Easy installation, although instruction sheet is not correct. Wrong Allen key size should be 10mm, and box spanner should be 15mm. Torque settings also mismatched with 45 and 55 lbs/ft in the video and 41 and 129 lbs/ft on the paper instructions. And the small washers still trying to work these out, but works well without them. Also found that I had to tap one hole on both sides to fit the front set of bolts.
John T.
Shopping Satisfaction
It is just the color, black would be much better.
Shopping Satisfaction
Perfekt 😃👍
Falko L.
Shopping Satisfaction
Eine sehr gute Ergänzung zur Domstrebe vorne oben und Fahrwerksstrebe vorne unten.

Ein muß für den sportlichen Mustang Einsatz.
Deutlich besseres und gefühlt strammeres Handling.

Verarbeitung natürlich top.
Ingo H.