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Steeda IRS Subframe Alignment Kit (15-19 GT, EcoBoost, V6)

Market Price $45.95 You Save 13% ($6.00)
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$39.95 (kit)

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  • Item 390070
  • MPN# 555-4438

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    Features & Details

    • Steeda IRS Sub Frame Alignment Kit
    • Aligns Subframe to Chassis
    • CNC Machined Delrin Bushing Sleeves
    • No Increase in NVH (Noise, Vibration, Harshness)
    • No Permanent Modifications Required for Installation
    • Designed and Manufactured in the USA
    • Fits 2015 to 2019 GT, EcoBoost and V6 Mustangs
    IRS Alignment Kit. Does it feel like your 2015 to 2019 Mustang is driving down the road sideways? Well it could be, a number of S550 Mustangs left the factory with misaligned rear IRS subframes. For some odd reason the IRS subframe mounting holes are much larger than the mounting bolts. This difference in sizes can cause the subframe to be misaligned by up to as much as a half inch to the left or right. This Steeda IRS Subframe Alignment Kit includes four sleeve bushings that act as spacers to fill the extra space around the factory bolts. These sleeves will prevent the subframe from moving, allowing for a proper alignment.

    Delrin Bushing Sleeves. Steeda IRS Subframe Alignment Bushing Sleeves are proudly designed and manufactured right here in the USA. These IRS Differential Sleeves are precision CNC-machined from a high quality Delrin material for superior strength and long lasting durability. Delrin is an extremely stiff thermoplastic that features a very low coefficient of friction making it the perfect material for automotive bushings.

    No Increase in NVH. Seeing that these Steeda IRS Alignment Bushing Sleeves are made from Delrin you will not feel any increase in NVH (Noise, Vibration and Harshness). Because there is no increase in NVH, this Steeda IRS Subframe Alignment Kit is ideal for street, performance and race applications.

    Straight Forward Installation. The Steeda IRS Subframe Alignment Kit is designed to install with just basic hand tools in under an hour. No extra modifications or special tools are needed for a straight forward installation. Please note that an alignment, by a qualified shop, will be required after installation.

    Application. The Steeda IRS Subframe Alignment Kit is specifically designed for use on 2015 to 2019 Mustangs that are equipped with the factory Independent Rear Suspension (IRS), including the V6, EcoBoost and GT models.

    Note: Coupon codes cannot be applied to this product.

    Fitment: 2015 2016 2017 2018 2019 Details

    CA Residents: Warning: California's Proposition 65

    What's in the Box
    • (4) Bushings
    Installation Info
    Will it fit my Mustang?

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    Questions & Answers (4)

    4 Top Rated Questions

    I got all 4 wheels aligned on my 2016 GT recently. Do I need to get them realigned after I install these?

    • It would be beneficial to have the alignment checked after installing the Steeda IRS Subframe Alignment Kit, as installing this can effect the positioning of your rear tires.

    Helpful (0)

    Will these fit GT convertibles?

    • The Steeda IRS Subframe Alignment Kit can be installed in GT Convertibles.

    Helpful (0)

    Can I use this alignment kit along with the Steeda IRS Subframe Bushing Support System?

    • The Steeda IRS Subframe Alignment Kit is specifically designed for use on 2015 to 2017 Mustangs that are equipped with the factory Independent Rear Suspension (IRS), including the V6, EcoBoost and GT models.

    Helpful (0)

    Are these compatible with the Steeda IRS Subframe Braces?

    • yes

    Helpful (0)
    Post Your Question

    People Who Bought This Item Also Bought

    Customer Reviews (28) Write a Review

    Overall Rating 4.7

    out of 5 stars

    Installation Time:Less than 1 Hour

    Installation Cost:$100-$250

    • Handling Improvement 4.461538 4.5
    • Fit 4.730769 4.7
    • Bang For Your Buck 4.615385 4.6



    • 5/5

      Installation Time: Less than 1 Hour

      September 20, 2018

      Works as advertised! Perfect Solution

      I ordered these because I had issues re-aligning my subframe after numerous suspension installs. They fit perfectly, my only complaint is the price. $40 isn't a lot of money, however, for 4 seemingly plastic sleeves, there's no way they have nearly that much money into them. As far as handling is concerned, it feels the same. But, when I took it to the alignment shop, the tech was able to get the vehicle back into factory spec easily.

      DrivenS550

      Year: 2017 Submodel: V6

      Helpful (0)

    • 5/5

      Installation Time: Less than 1 Hour

      July 19, 2018

      Fit as expected

      No issues, fit perfectly, installed with Steeda Subframe Braces.

      Jackson

      Year: 2018 Submodel: GT

      Helpful (1)

    • 5/5

      Installation Time: Less than 1 Hour

      July 18, 2018

      Does what it says.

      It didn't get my rear axle centered completely but it certainly helped. It doesn't do anything to affect ride quality and there's not rattles. I would recommend sliding these in before you drop your car/IRS cradle.

      eser5oh

      Year: 2016 Submodel: GT

      Helpful (3)

    • 5/5

      Installation Time: Afternoon

      July 04, 2018

      Steeds subframe inserts

      Easy install great design quality part..............

      Pete

      Year: 2016 Submodel: GT

      Helpful (1)

    • 4/5

      June 19, 2018

      Subframe inserts

      Nice semi-simple novelty to square up your subframe. Have a 2018, and mine wasn't far out from the factory. I installed due to the fact that I had more wheel base gap on the right side as opposed to the left. This squared it up nicely, within a half a pinky width. Changed previous alignment settIng in minimal fashion. Does make car stiffer in the rear for sure. Have done the Steeda diff bushing and cradle bushing kits prior to this. Be wary of your jacking equipment when installing. A slight bleed down of a rack or a jack, can put you into a world of frustration quickly.

      Repete

      Year: 2018 Submodel: GT

      Helpful (3)

    • 1/5

      Installation Time: Less than 1 Hour

      March 26, 2018

      Doesn’t work for everyone, from what I was told

      Had these installed at a shop to ensure the cradle was centered and would remain centered. Unfortunately, these bushings kicked the cradle out by at least 1/2” towards the passenger side. Spoke to Steeda, and they admitted that these bushings “don’t work for everyone”, and that they cannot control Ford’s production tolerances. Needless to say, these bushings are now sitting on a shelf in my garage.

      Nick

      Year: 2018 Submodel: GT

      Helpful (4)

    • 5/5

      Installation Time: Less than 1 Hour

      March 12, 2018

      Did exactly what I needed it to do.

      I was having a issue like many others where my subframe is not aligned properly which causes one wheel to be further out than the other. I had been told this would fix my problem and sure enough it did. Be sure to get an alignment afterwards.

      JaredB

      Year: 2017 Submodel: GT

      Helpful (3)

    • 5/5

      Installation Time: Less than 1 Hour

      March 05, 2018

      Steeda irs subframe alignment kit

      These where so easy to install a caveman can do it!! I really feel a difference in my rear end thanks A.M.

      EarnestN

      Year: 2017 Submodel: GT

      Helpful (3)

    • 5/5

      Installation Time: Afternoon

      February 24, 2018

      Steeda alignment bushings

      I installed these along with the Steeda subframe braces and bushing support system. Got rid of all the slip and most of the hop during a hard launch. Very pleased and would definitely recommend

      LanceH

      Year: 2017 Submodel: GT

      Helpful (4)

    • 5/5

      Installation Time: Less than 1 Hour

      February 15, 2018

      Does the job

      Money is short, times are hard. It does the job for the price.

      TravisC

      Year: 2017 Submodel: GT

      Helpful (4)

    • 5/5

      Installation Time: Less than 1 Hour

      January 08, 2018

      Must Have

      If you're lowering your car this is a must have. Heck even if you're not lowering you still need these. You know when you look at your car and than one rear wheel looks more forward or back than the other. Put these on problem solved. Why Ford didn't do this from the factory? Who knows.

      ArielL

      Year: 2017 Submodel: EcoBoost

      Helpful (5)

    • 5/5

      Installation Time: Afternoon

      December 27, 2017

      Aligns Subframe easily Must buy.

      Bought this since I kept hearing clunking when I was driving over small speed bumps didn't know what it was at first but after some research I found out it was my subframe. Install was easy I lowered left side first installed it didn't tighten fully then the same on the right side and it went it perfectly fine. I also installed the Steeda Rear Subframe Support Braces if you do get that make sure to buy this don't make the mistake I did I bought the Steeda Rear Subframe Support Braces first and it was a pain to install since the subframe was out of alignment and it took way to long to install w.o the alignment kit but after the Steeda IRS Subframe Alignment Kit the braces went on perfectly no issues. Took about 3 hours to install in my garage.

      Yoon

      Year: 2016 Submodel: GT

      Helpful (4)

    • 5/5

      Installation Time: Afternoon

      November 25, 2017

      works great

      Makes it a lot easier to installs rear subframe in the car

      franko2

      Year: 2015 Submodel: GT

      Helpful (3)

    • 5/5

      Installation Time: Shop Install

      Installation Cost: $100-$250

      November 07, 2017

      steeda IRS alighnment kit

      this product much like any other steeda product is of superior quality and perfect fit and finish. I recommend this for anyone looking to create a more stable and balanced ride along with better driver confidence at the wheel! you will need to do an alignment after installing this kit in order to make sure the subframe the body and your wheels are all aligned correctly. Worth the price!

      Hovo

      Year: 2017 Submodel: GT

      Helpful (3)

    • 5/5

      Installation Time: Afternoon

      October 13, 2017

      Very easy

      really easy to install. great piece of mind to let you know your rear sub frame is centered to the body. It is almost mind blowing why there not standard. my frame was pretty much centered from the factory but the gap could lift an eyebrow esp if your IRS was not as centered as mine. but still 5 stars in my book and a must have!!!

      WilliamJ

      Year: 2017 Submodel: GT

      Helpful (3)

    • 3/5

      Installation Time: Less than 1 Hour

      October 03, 2017

      Won't work with BMR IRS Lockout Kit

      This is a good product. But it won't work with the BMR IRS Cradle Bushing Lockout kit. Unfortunately, that isn't mentioned in the description. I figured it out the hard way. Steeda does make an Alignment Kit that works with the BRM Lockout Kit. Item 398196 / MPN# 555-4447 And it works great!!! Too bad I had to purchase both to figure it out.

      TJK

      Year: 2015 Submodel: GT

      Helpful (6)

    • 5/5

      September 26, 2017

      fits like a glove, easy install

      easy install, followed the directions, with the help of a youtube video from the competitor website. regardless, it was helpful. paired with the Steeda IRS subframe bushing, my car feels a bit more grounded with minimal NVH.

      GABRIEL

      Year: 2017 Submodel: GT

      Helpful (4)

    • 5/5

      Installation Time: Less than 1 Hour

      September 19, 2017

      Great kit

      These bushings were really easy to install. Rear end feels solid to the ground

      MikeI

      Year: 2015 Submodel: GT

      Helpful (3)

    • 5/5

      Installation Time: Less than 1 Hour

      September 13, 2017

      These are great!

      These corrected every issue I had with rear alignment after getting coilovers installed.

      JasonD

      Year: 2017 Submodel: GT

      Helpful (3)

    • 5/5

      Installation Time: Less than 1 Hour

      July 05, 2017

      Just what I needed

      This kit worked perfectly to align the rear of my 17 mustang.

      ChadM

      Year: 2017 Submodel: GT

      Helpful (3)

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