SKU: 71576068558

Steeda Rear IRS Subframe Support Braces 555-5754 Ford Mustang 2015-2024

Sale price$211.81 Regular price$235.34
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Ships within 48 hours Β· Estimated delivery Jul 17 - Jul 22

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Description

Steeda Rear IRS Subframe Support Braces 555-5754 Ford Mustang 2015-2024Part Number: 555 5754 The Steeda IRS Subframe Braces add rigidity to your S550 & S650 Mustang's rear end as a simple bolt on upgrade. One of our most popular parts! By connecting the rear together the braces not only add rigidity that was lacking in the rear, but also more control of the whole car. Essential! Homologated for European use With the release of the S550 Mustang in 2015 Steeda knew that addressing the IRS system would be a top priority.

Part Number: 555-5754

The Steeda IRS Subframe Braces add rigidity to your S550 & S650 Mustang's rear end as a simple bolt on upgrade. One of our most popular parts! By connecting the rear together the braces not only add rigidity that was lacking in the rear, but also more control of the whole car. Essential! Homologated for European use

With the release of the S550 MustangΒ in 2015 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 and S650 Mustang rear suspension to another level!

Our Steeda S550 & S650 Mustang Rear IRS Sub frame Braces for 2015+ Mustang GT, Bullitt, Mach 1, Dark Horse 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 and S650 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
  • Standard Fitment on Steeda Q-Series Mustangs
  • Homologated / Certified for European use
  • Lifetime warranty
  • Normally in stock

INSTALL GUIDE FOR IRS BRACES

Fitment:
S550 Mustang: V8 & Ecoboost, COUPE ONLY Manual and automatic, 2015-2023
S650 Mustang: V8 & Ecoboost, COUPE ONLYΒ Manual and automatic, 2024+

Not For Convertibles
Convertible Mustangs already come with a similar brace from the factory, so this part from Steeda is not required.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 71576068558

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MaddDembinski
Draper, US
β˜…β˜…β˜…β˜…β˜… 5
Runs small
Size: 3T, Color: Black
Runs just a little small. Maybe upsize, but great otherwise!
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Reviewed in the United States on February 28, 2026
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Lorraine
Whiting, US
β˜…β˜…β˜…β˜…β˜… 5
I was delighted with the quality and color
Size: X-Small, Color: Lilac
This is a super cute, and frankly, fairly high fashion little hoodie. The price was great for what it is. Really nice soft (terry?) inside. Double fabric hood. Really soft. It has an oversized cut which makes it easy to get on and off, but is just the right length to make the sizing look great and intentional - it doesn't look too big. I love the color. It's high quality, and I didn't notice any shrinkage. Even the hood is cut in a chic way. Not your average kids' hoodie.
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Reviewed in the United States on October 26, 2025
D
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David Cowart
Cuba, US
β˜…β˜…β˜…β˜…β˜… 4
will shrink when dried.
good quality buy runs a little small.
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Reviewed in the United States on April 24, 2026
J
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Jenni Piepgrass
Pawtucket, US
β˜…β˜…β˜…β˜…β˜… 5
Cutest hoody for toddlers
Size: 3T, Color: Lilac
Amazing!! The cutest colour. Got it for my niece who is 2- got a size 3T and it’s fits perfect so I would definitely size up
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Reviewed in the United States on March 2, 2026
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Kristi
Port Orchard, US
β˜…β˜…β˜…β˜…β˜… 5
Great fit
Size: 3T, Color: Light Grey Heather
Very soft and great material. Stretchier than expected. Fit was great
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Reviewed in the United States on May 2, 2026

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