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SR Performance 8.8 Axles - 31 Spline 5 Lug (05-14 GT; 11-14 V6; 07-09 GT500)

Market Price $310.49 You Save 13% ($40.50)
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  • Item 525038
  • MPN# 525038

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Features, Video & Details

  • 1541H High Manganese Steel Alloy
  • 31 Spline Axle
  • 5 X 4.5" - Five Lug Design
  • 32.810" / 31.680" Axle Length
  • Kit Includes Driver and Passenger Side Axles
  • Bearings, Seals and Studs Also Included
  • Fits 2005-2014 GT, Bullitt, BOSS, 2011-2014 V6 and 2007-2009 GT500 Mustangs with 8.8" Rears

Review & Installation Video

Review & Install Video

Performance Upgrade. If your running a heavily modified or forced induction S197 Mustang, your factory axles might be too weak to take the additional punishment. But after installing a set of SR Performance 1541H alloy steel axles, you will be sure to get all your Pony's power and torque firmly planted to the pavement - where it belongs.

Built to Out Perform. SR Performance Axles are forged from premium quality 1541H high manganese steel alloy that is induction heat treated for an axle shaft that is stronger and much more durable than stock, making it perfect for high stress street and race applications.

Application. This pair of SR Performance 5-Lug 31 Spline Axles are specifically designed for use on 2005-2014 GT, Bullitt, BOSS, 2011-2014 V6 as well as 2007-2009 Shelby GT500 Mustangs that have the factory 8.8" 31-spline LSD installed. ABS rings are not included.

Application Note: 1986-2004 V8 Mustangs came factory equipped with 28 spline axles, except for 2003-2004 SVT Cobras which were 31 spline. All 2005 and newer V8 Mustangs come equipped with 31 spline axles.

Fitment: 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 Details

What's in the Box
  • (2) 31 Spline Axles
  • (10) Wheel Studs
  • (2) Outer Axle Shaft Bearings
  • (2) Seals
Installation Info
Tech Specs
  • Splines: 31
  • Type: C-clip
  • Stud Pattern: 5 x 4.5"
  • Stud Type: 1/2" Press in
  • Length: 32.810" / 31.680"
  • Material: 1541H alloy steel
Will it fit my Mustang?
  • GT - 05, 06, 07, 08, 09, 10, 11, 12, 13, 14
  • GT500 - 07, 08, 09
  • Bullitt - 08, 09
  • V6 - 11, 12, 13, 14
  • Boss 302 - 12, 13

Fits 8.8" rear gears with 31 spline LSD or Spool only

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Most Helpful Reviews


Product is easy to install and the car feels better

Helpful (1)

great product as always from AM

Axles where shipped in great packaging, I read other reviews and they all said get some studs or re use old ones. Because the ones in the kit were to small, they were so I picked some up from my ford dealership. ...

Read More
Helpful (1)

Overall Rating 4.5 out of 5 stars
Read All 18 Reviews

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2 Questions / 2 Answers

Ask a Question

Does this fit on the drivers side . The back rim ? Is it for all ? The front and back ?


  • These SR Performance 8.8 Axles would go on the passenger and driver sides of the rear axle.


Helpful (0)

With this axle will you maintain abs on a 2007 GT?


  • Yes


Helpful (0)

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Customer Reviews (18) Write a Review

Overall Rating 4.5

out of 5 stars

Installation Time:Afternoon

Installation Cost:$1000+

  • Performance Gain 4.133333 4.1
  • Fit 4.533333 4.5

  • 5/5

    Installation Time: Full Day

    January 23, 2017


    Product is easy to install and the car feels better


    Year: 2011 Submodel: GT

    Helpful (1)

  • 5/5

    Installation Time: Afternoon

    December 17, 2016

    great product as always from AM

    Axles where shipped in great packaging, I read other reviews and they all said get some studs or re use old ones. Because the ones in the kit were to small, they were so I picked some up from my ford dealership. But I have had the axles in for about 3 weeks and everyhting is working perfect.


    Year: 2013 Submodel: GT

    Helpful (1)

  • 4/5

    December 15, 2016


    Studs that came with these axels were too short for my wheels (235 zr 18) california special not sure why but it was ok my mechanic was able to use my original studs


    Year: 2007 Submodel: Other

    Helpful (1)

  • 5/5

    September 29, 2016


    Fit perfect and good performance american muscle know how to make business thanks for everything


    Year: 2009 Submodel: GT

    Helpful (1)

  • 3/5

    September 15, 2016

    Good product but...

    I had these axels installed when I had my rear end rebuilt. My mechanic said it all went together good. However the wheel studs are way to short and he could only get the lug nuts on about 2 threads which is huge safety concern.


    Year: 2007 Submodel: GT

    Helpful (1)

  • 4/5

    September 12, 2016

    Bent Axle fixed

    I had a slightly bent axle on LH side which caused a slight squeaking from the LH brake. I ordered SR 8.8 axles-31 spline are solid and fit great. I Used original Studs and the ABS rings transferred easily. Exact fit .1mo, so far so good.


    Year: 2008 Submodel: GT

    Helpful (1)

  • 5/5

    Installation Time: Afternoon

    March 17, 2016

    Great product

    Product fit very well trick to remove abs wheel heat with torch and pry off. To install abs rings clean them then put them on a stove for a couple of minutes grab with pliers and they slid right on the axle!


    Year: 2006 Submodel: GT

    Helpful (1)

  • 4/5

    Installation Time: Weekend

    December 13, 2015

    OEM Quallity

    Fairly easy to install if mechanically inclined with the right tools, everything went well with the install. Wish the ABS rings came with but was not hard to re-press them onto the new ones (RE-Press Meaning a Hammer and a block). The only thing I ran into was the replacement lug nut studs that came with the product, they were to short for the application maybe shipping error or just the standard requirements into shipping. but that being said I just tapped out the old studs and re-installed them into the new shafts and everything seems to be just fine.


    Year: 2014 Submodel: GT Lakeland FL

    Helpful (1)

  • 5/5

    Installation Time: Shop Install

    Installation Cost: $1000+

    May 20, 2016

    2011 Ford Mustang

    really nice axles, but I had to use my old wheel studs, the studs that came with the kit were to short


    Year: 2011 Submodel: V6

    Helpful (1)

  • 4/5

    March 11, 2016


    These axles fit perfect! So far so good! Sent to my mechanic and he said all was good. Shipped to my front door!


    Year: 2008 Submodel: Bullitt

    Helpful (1)

  • 4/5

    Installation Time: Afternoon

    February 18, 2016

    Great axles but needs some parts.

    The axles were great and a perfect fit. Only complaint was the studs were shorter than factory so I couldn't use them and it doesn't come with the abs tone rings.


    Year: 2007 Submodel: GT Morehead ky

    Helpful (1)

  • 4/5

    Installation Time: Afternoon

    January 22, 2016

    Pretty cool

    Overall the product was nice but it's doesn't come with the ABS indicators for you back shafts


    Year: 2011 Submodel: V6 Jacksonville fl

    Helpful (1)

  • 5/5

    Installation Time: Afternoon

    September 23, 2014

    Good product

    Instillation wasn't to bad, everything fit and went together perfectly. I haven't noticed anything along the line of performance, just had to fix a broken axle.


    Year: 2014 Submodel: V6 Fort Myers, FL, USA

    Helpful (1)

  • 5/5

    Installation Time: Less than 1 Hour

    February 12, 2016

    I would highly recommend

    The only flaw with this product is not coming with an abs ring, but if you heat the old one up and lightly tap it you can get it off without breaking it and use it on the new axles


    Year: 2012 Submodel: V6 Mishawaka,indiana

    Helpful (0)

  • 4/5

    Installation Time: Full Day

    May 14, 2017

    Real Nice Set

    I bought this after a lot of shopping and found it was about the best value point. Just be aware, the studs included are not long enough to use anything besides stock rims. We had to switch studs with the shafts installed which is a trick in itself. The fit was perfect and the construction of the shafts is sturdy.


    Year: 2005 Submodel: GT

    Helpful (0)

  • 5/5

    Installation Time: Afternoon

    April 24, 2017


    They fit perfect the only thing that didn't was the tire bolts


    Year: 2011 Submodel: GT

    Helpful (0)

  • 5/5

    Installation Time: Afternoon

    March 22, 2017


    .No problems at all had to use stock wheel studs other than that it was good


    Year: 2014 Submodel: GT

    Helpful (0)

  • 5/5

    March 11, 2017


    Loved them! Bent one of my axles and put them in replacement of my old axle shafts. The difference noted in pulling is beyond extreme!


    Year: 2012 Submodel: V6

    Helpful (0)

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