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Maximum Motorsports Low Profile IRS Subframe Bolts (99-04 Cobra)

29 Reviews
Our Price


  • Item #47022
  • MPN# MMF-1

  • Market Price $19.99
  • You Save 18% ($3.54)
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  • Adds Tire Clearance.
  • Run Wider Tires.
  • Bolt-In Installation.
  • Sold as a Set of Two.
  • Fits 99-04 Cobra with IRS.
Go Wide. Your Cobra's IRS can prevent you from running the width tire you need to get the traction you need. But with a pair of Maximum Motorsports Low Profile Subframe Bolts, you can ditch those wimpy narrow rims and go wide for better launches and more aggressive looks.

Perfect Fit. Maximum Motorsport's Low Profile IRS Subframe Bolts replace the OE bolt with its .5" head with a .35" low-profile bolt and washer. And unlike the factory bolts, they have rounded edges so if they do make contact with your tire they won't damage it.

Bolt-In Installation. These bolts are a direct replacement for your OE subframe bolts, making installation straightforward and hassle-free.

Application. These subframe bolts are designed for the 1999 to 2004 Mustang Cobra with IRS (independent rear suspension). Sold as a set of two.

Fitment: 1999 2001 2003 2004 Details

What's in the Box
  • (2) Bolts
  • (2) Washers
Installation Info
Will it fit my Mustang?
  • Cobra - 99, 01, 03, 04

Fits 1999 to 2004 IRS equipped SVT Cobra Mustangs only

Most Helpful Reviews

They worked!

They did the job. I went from OEM 17x8 to 17x10.5!

Helpful (1)

Woks as described

Put them on my 99 svt cobra so I could use my 17X10.5 wheels. They do the job, not much clearance, but enough. They look like they won't work with the car on stands and the suspension extended. As a matter ...

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Helpful (9)

Overall Rating 4.9 out of 5 stars
Read All 29 Reviews

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1 Questions / 1 Answers

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Is there just one of these bolts per side on the rear? Since they are sold as a pair I assume you only need 1 set to eliminate the clearance issue when running wider tires?


  • One per side, cheap insurance if your running 315's or wider tires.


    Good Answer (0) (0)

Answer This Question I need this answered (0) (0)

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Customer Reviews (29) Write a Review

Overall Rating 4.9

out of 5 stars

  • 5/5

    January 10, 2012

    They worked!

    They did the job. I went from OEM 17x8 to 17x10.5!


    Year: 2001 Submodel: Cobra Florida

    Helpful (1) (0)

  • 5/5

    July 26, 2010

    Woks as described

    Put them on my 99 svt cobra so I could use my 17X10.5 wheels. They do the job, not much clearance, but enough. They look like they won't work with the car on stands and the suspension extended. As a matter of fact the tires will touch the bolt heads while you are putting on the wheels, it's OK because when you let the car down the tires will end up out of the way. The Instructions say you may have to jack up the A arm when removing the old bolts, it should say you will have to. Overall it works great and is pretty easy to DIY in your garage.


    Year: 1999 Submodel: Cobra

    Helpful (9) (0)

  • 5/5

    July 19, 2010

    MM Low profile IRS bolts

    Excellent, and very easy to install. No more worrying about tires rubbing on a bolt!


    Helpful (3) (0)

  • 5/5

    September 02, 2008


    Perfect fit and easy installation. If you are going wider in the rear of your 2003 or 2004 SVT Cobra, then these bolts are a must.


    Helpful (1) (0)

  • 5/5

    December 26, 2012

    Life saver

    I have a 04 cobra , I purchased the 10.5' cobra wheels but they did not fit due to factory irs bolt, I installed this irs bolt I was able to fit the wheels & tires (n555) the only thing is the bolt touched the wheel when it was on the lift but when it was lowered on the ground it fits inside the wheel. Super easy install and no problems with the quality I would suggest lift the car and put it on jack stands then take the jack and raise it enough under the control arm for it to raise the IRS so when you remove the factory bolts the irs won't drop and you can just install the new bolts , the second time i did the install it took half the time , easy way to tell if its raised enough is when the bolt is easily removed


    Year: 2004 Submodel: Cobra Silver spring md

    Helpful (1) (1)

  • 5/5

    August 17, 2011

    Works with 17x10.5" wheels and 315 NT05

    Easy to install. Torqued to 75lbs. Instructions say to place car on Jack stands and use a jack to move the Sub-Frame for bolt alignment. I tried this and it cost me $300 bucks to fix the pinch weld that buckled. What I ended up doing and it worked much better was jack up the car via the cutout in the pinch weld and then place the jack stand under the Sub-Frame and lower the Sub-Frame onto the jack stand as needed for bolt alignment.


    Year: 2004 Submodel: Cobra

    Helpful (1) (1)

  • 5/5

    May 27, 2010

    Max Motorsports IRS bolt

    EZ install, works as advertised.

    Jules Broom

    Helpful (1) (1)

  • 5/5

    January 28, 2010

    1999 irs bolts

    worked great ! saved my tires


    Year: 1999

    Helpful (0) (1)

  • 5/5

    January 25, 2010

    irs bolts

    They work really well they were easy to put in. I had it done in about 20 mins. Great product

    Shawn Pawlowski

    Helpful (0) (1)

  • 5/5

    November 08, 2009

    Low Profile IRS Bolts

    It was a pretty easy install. They provided the clearance needed for my 315/35/17.


    Helpful (0) (1)

  • 5/5

    August 29, 2009

    Another great product from Maximum Motorsports

    I bought these along with my 17x10.5 wheels and 315x35x17 tires and they are absolutely essential! They bolted in so easily, took only about 10 mins per side and most of that is getting the jack stand under the car!


    Helpful (0) (1)

  • 5/5

    October 21, 2016

    Worked really well

    So glad I found these now my rear tires don't rub on the factory irs bolt.


    Year: 2001 Submodel: Cobra

    Helpful (0) (0)

  • 5/5

    October 11, 2016

    IRS bolts

    Very easy install! Only took 30 min in my garage. Great fit and finish. Came with easy instructions including picture diagrams.


    Year: 2001 Submodel: Cobra

    Helpful (0) (0)

  • 5/5

    June 29, 2016

    Wide Tires

    Perfect for people who would like to have a wider tires in the back 295/ 305/ or bigger


    Year: 2003 Submodel: Cobra

    Helpful (0) (0)

  • 5/5

    June 08, 2016

    Good Quality Easy

    This is a great product and very simple install for anyone with a jack and a few stands. Total installation from beginning to end is expected to be roughly an hour.


    Year: 1999 Submodel: Cobra

    Helpful (0) (0)

  • 5/5

    March 01, 2016

    IRS Subframe Bolts 99 Cobra

    The IRS subframe bolts were a lifesaver! Installation took me about 30 minutes with a floor jack a pair of jack stands. Just follow the simple instructions that come with them. A tip I'd pass along: only about the last 1/4 of the bolt is actually going into threads. So if you have the bolt only halfway in/out and it's a tough go, the holes aren't properly aligned. Use the floor jack as shown in the instructions. Helped me fit my new 315s!


    Year: 1999 Submodel: Cobra

    Helpful (0) (0)

  • 5/5

    January 12, 2015

    Looks good

    This made an excellent gift to my friend that owns a 99 cobra and wants to run wider rims . I cant wait to see how they look !


    Year: 2003 Submodel: GT PA

    Helpful (0) (0)

  • 4/5

    June 14, 2014

    IRS bolts

    They work great, if your tires rub these then something is wrong. Only 4 out of 5 though because of strong warnings in instructions about how careful you have to be with your tightening methods so you won't strip out the Allen head so I'm guessing they aren't grade 8


    Year: 2003 Submodel: Cobra NC

    Helpful (0) (0)

  • 5/5

    March 07, 2014

    great product

    needed these for the 17x10.5 rear wheels just wanted to make sure i wasn't going to run into any clearance issues.


    Year: 2003 Submodel: Cobra Aston, PA

    Helpful (0) (0)

  • 5/5

    June 19, 2013

    quality part

    works well as a needed part for the 17x10.5 rim (99-04 cobra)


    Year: 2001 Submodel: Cobra Goose Creek, SC, USA

    Helpful (0) (0)

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