SKU: 71576068558

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

Sale price$211.81 Regular price$235.34
Save 10%

Pay in installments of $58.84 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 17 - Jul 22

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

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 Mustang 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 ONLY 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

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.4 ★★★★★
Based on 13 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
D
DHK
Alexandria, US
★★★★★ 5
Good Fit & Quality
Size: 14-22 2.0L hybrid, Size: 14-22 2.0L hybrid
This set which includes both the engine and cabit air filters are of good quality and fits my 2020 Honda Accord Hybrid well. The engine filter feels sturdy and well built. The cabin filter, although without charcoal infusion, has many folds which is more important when it comes to effective filtering of particles. The installation was easy and for the set, this set offers a good value.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 16, 2026
A
ard78641
Carnegie, US
★★★★★ 5
Perfect fit!
Size: 14-22 2.0L hybrid, Size: 14-22 2.0L hybrid
This is a good value for a combo package which includes a cabin air filter as well as the engine air filter. Both filters were a perfect fit in my 2019 Honda Accord hybrid. The cabin air filter airflow direction is clearly labeled and the pleats are sturdy. Installation was super easy- just drop the glove box cover, pop the cabin filter cover plate, pull out the grungy old filter and pop in the new one. Easy peasy. The engine air filter is also a perfect fit. No complaints or concerns here.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 10, 2026
C
Verified Purchase
Croitiene ganMoryn
Omaha, US
★★★★★ 5
INFISTAR AC85111 Cabin Air Filter
Perfect fit! So grateful for you carrying this and the great price. My AC has been out for about a year but when I replaced this, it now works again! Had no idea there was such a thing.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 26, 2026
S
Verified Purchase
Steve
West Palm Beach, US
★★★★★ 5
Fits great
Great fit
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 26, 2026
R
Verified Purchase
richard hunter
Waukegan, US
★★★★★ 5
Cabin air filter for Honda
Cabin air filter was an exact fit and arrived the next day. Seems to be of comparable quality to OEM part and was significantly cheaper.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 29, 2026

recommand products