Steeda Mustang Strut Tower Brace GT/EcoBoost (2015-2020)

8 Review(s)
$50.00 (20%)
Steedas S550 Mustang Double-Bar Strut Tower Brace is an easy to install part that will stiffen up the handling of your car as well as improve ride quality.
Part Number: 555 5731
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Steeda's S550 Double-Bar Strut Tower Brace is made specifically to work with your 2015 and up Ford Mustang GT and EcoBoost (all models: Performance Pack, non-Performance Pack, 20" wheel option).

Our S550 Steeda Strut Tower Brace for the 2015+Mustang GT and EcoBoost is made from high-strength chrome-moly steel and powder coated wrinkle black. This easy-to-install bar will stiffen up the front end of your Mustang to improve vehicle handling.

Completely designed and constructed in the United States of America. Easy-to-install and a great looking piece for under your hood.

Please Note: Does not fit 2015-2019 Mustang V6. It fits all RH (right hand) drive models that are not V6.

Purchase your Steeda S550 Strut Tower Brace for your 2015+ Mustang GT and EcoBoost at Steeda Autosports today!

Product Benefits
  • Improves front chassis stiffness
  • Improves ride quality over rough surfaces
  • Improved vehicle handling
  • 23% lighter than the factory Ford Strut Tower Brace
  • Allows easy access to the oil dipstick

CA Residents: Cancer and Reproductive Harm WARNING

Scott Boda with Steeda Autosports here to talk about the installation of our S550 Strut Tower Brace. This strut tower brace fits all EcoBoost and GT models. Unfortunately, it does not fit the V6 version. Remove the forward and rear-most upper strut tower nuts on both sides. Replacements are included. All the nuts will be removed except for the outside nut on each side of the strut tower. Disconnect the ground cable on the passenger side of the strut tower to allow movement of the battery cable when installing the new strut tower brace. Install the provided spacers onto the studs of the strut tower in the locations that do not have the factory brace installed. The 4 spacers are installed on Performance Pack models, two on each side. On non-Performance Pack models, all 6 spacers will be used, 2 on the passenger side and 4 on the driver side. Place the strut tower brace into position over the appropriate studs. Install and tighten the provided replacement locking nuts. The 4 10mmx1.5mm thread pitch lock nuts will be used on the 2 independent studs on the strut tower. (Painted the body color) The 4 10mmx1.25mm thread pitch lock nuts will be used on the stud of the strut tower. The strut stud is the stud closest to the front and rear of the car. Tighten all the nuts to 35ft.lbs to complete the installation. Congrats, you have now installed your Steeda Strut Tower Brace for the S550 Mustang. Remember, when taking your Mustang or Ford vehicle to the next level, choose none other than Steeda Autosports, where Speed Matters!
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Fitment & Features


Manufacturer: Steeda Autosports
Made in USA: Yes

Installation Information:

Level of Difficulty: Easy
Install Time: About 5 Minutes
Tools Required: Basic Shop Tools
Print Instructions:
Install Video:

Vehicle Fitment:

Fits Model Year: 2015, 2016, 2017, 2018, 2019, 2020

Customer Reviews

Rating Snapshot

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Average Customer Ratings


Simple fast install in under 20 minutes.
Did you find this helpful?  2 of 2 Found Helpful
Verified Buyer   from Indiana on 4/2/2019
2017 Ecoboost Improved handling.
First off very fast shipping, Quality was as expected from steeda for a powder coated part, install was simple, good instructions included. took maybe 20 min for install, and that was mostly looking for my sockets, this is easily a 10-15 minute job. I noticed the difference on my stock ecoboost taking corners faster. giving this product A+ for looks and easy install! lets not forget to mention it fresh-ins up the look of your ecoboost engine compartment, people love seeing it at the shows.
Did you find this helpful?  7 of 7 Found Helpful
Verified Buyer   from Chicago on 2/3/2019
Steering is more efficient and responsive
I already have the stage 1 handling package (progressive sport springs and sway bars) on my 2015 Ecoboost, and was amazed at the steering feel after this install. It's super responsive now and takes less effort to accomplish more when steering into curves at any speed. Doesn't hurt that it looks awesome, too!
Did you find this helpful?  14 of 14 Found Helpful
from Orangeburg, SC on 6/2/2017
Noticed improvement in cornering feel
I have added the Steeda tower brace and extreme g-trac lower brace. I don't plan to autocross, but I do like to rush through a corner now and again. I noticed improvement in cornering FEEL. Whether this translates to faster cornering speed or not, I haven't checked. The best I can explain the change in feel - It's like upgrading your tires to a stiffer sidewall/lower profile. There is less chassis compliance and spongyness mid corner to confuse my brain that I'm close to the handling limit.
Did you find this helpful?  14 of 14 Found Helpful
from Kansas on 10/9/2016
Really cleans up the engine bay
Replaced my oem strut brace with the Steeda one, now that they have revised it to work with the performance package GTs! I also plastidipped the overlflow tank. Really cleans up the engine bay.
Did you find this helpful?  3 of 3 Found Helpful
from Texas on 4/1/2016
The design allows for easily removing the oil dipstick
I went with the Steeda version primarily because the design allows for easily removing the oil dipstick... I can just pull it straight up through the gaps between the bars without it touching anything. The Ford Racing (OEM) version is not as well thought out.
Did you find this helpful?  11 of 11 Found Helpful
from Florida on 1/22/2016
Super easy installation
Installed the new Steeda Strut Tower Brace that supports cars with the factory 20" option. Super easy installation. Best part is that the Steeda version allows easy access to the oil dipstick!
Did you find this helpful?  13 of 13 Found Helpful
from California on 11/18/2015
Amazing product with super easy install that will blow your mind with the difference in rigidity in the corners I mean night and day!! If you didn't get the stock strut tower this is a must have!! It really brings the front end on cornering!!
Glad you liked it, thank you for choosing Steeda!
Did you find this helpful?  12 of 12 Found Helpful
from Georgia on 6/7/2015
There are no reviews for this product!

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