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

Market Price $295.99 You Save 12% ($34.90)
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$261.09

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  • Item 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

    Hey guys, I'm Alex from americanmuscle.com, and today I'm bringing you my quick review and breakdown of the SR Performance 31 Spline 5 Lug Axles, fitting the '05 through '14 GT, '11 though '14 V6, and '07 through '09 GT500. So in this video, I'm gonna give a quick overview on who these axles are going to appeal to, the construction and materials utilized here, the price, and then what it's gonna take to get these onto your Mustang, where I'm gonna be giving these a pretty involved three outta three wrenches on the difficulty meter and a three to four hour job. So the SR Performance axles that I have here today are going to be a great option for any GT, V6, or GT500 owner that's either in need of a replacement axle or for someone that's just looking to get into a tougher setup. These axles are gonna be great for the Mustang owner that's using their car as a daily driver or a weekend warrior, in comparison to a car that's gonna be seeing track time every weekend, as these aren't gonna be manufactured with the same tolerances as another set out there like something from Moser or Strange. In terms of the construction and materials here, we're gonna see these are going to be manufactured out of an OE type material, which is gonna be 1541H high manganese steel, which is typical of what you're gonna find from most, if not all aftermarket axles. Now in terms of the pricing here, you should expect to be spending 300 bucks for this kit. In comparison to some of the other options out there, you're gonna see that they can easily go for upwards of about a thousand dollars, but that's gonna be based on their intentions and what they're gonna be used for, and I just wanted to give you an idea of what else is out there. Switching gears to the installation portion of the video, like I said up top, this is gonna be a three outta three wrenches on the difficulty meter. It's definitely not something for the faint of heart. However, if you have done this kinda work before or if you opened up your rear end previously, I don't think you're gonna have that much trouble, but this is something that I honestly wouldn't leave to a novice wrencher out there. Now I will say this up top that this is gonna be a brief overview or glance at what's gonna be entailed to get these onto your car. A couple steps might be missing here, but you're gonna have a wealth of information in order to help you get these installed on your car if you choose to tackle this in your garage. Now looking ahead, some things I'd make sure to have on hand here are gonna be a full socket set, a couple jack stands, a few oil pans, and then some fresh oil for when you're gonna be cracking that diff open. Now to start, I'd suggest loosening the lug nuts on your car before you get it up in the air. Once it's on the stands, take everything off and then remove your caliper, caliper brake, rotor, and dust shield. So once that's done, you're gonna wanna get underneath the car and locate the pumpkin or the diff where you're gonna wanna position a fresh pan underneath, locate the fill plug, and then begin taking the differential cover off. So after that's cracked, that's when the fun part starts coming in. You're gonna need to locate the lock bolt inside of the housing which will need to be removed, then you'll pull the pinion shaft along with the C-clips, and you're damn near done pulling the OE set. After this, assuming you do have new ABS rings, they're gonna need to be pressed on, and if you don't have the equipment to do this in-house, I might suggest having a shop do this just to be on the safe side. After that, it's merely gonna be throwing everything back together and buttoning the car back up. Again, you're gonna be looking at a pretty solid three outta three wrenches on the difficulty meter here and about a three plus hour job. All right, so just to wrap things up here, some final thoughts, if you're the Mustang owner that's in need of a quick fix for a broken axle or if you're just looking for something a little bit more tough than your standard setup, I would definitely recommend checking these out for your Mustang. So I'm Alex from AmericanMuscle, and that's my quick review and breakdown of the SR Performance 31 Spline 5 Lug Axles, fitting the '05 through '14 GT, '11 though '14 V6, and '07 through '09 GT500, available right here at americanmuscle.com.

    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

    MPN# 525038

    CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

    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?
    • Boss 302 - 12, 13
    • Bullitt - 08, 09
    • GT - 05, 06, 07, 08, 09, 10, 11, 12, 13, 14
    • GT500 - 07, 08, 09
    • V6 - 11, 12, 13, 14

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

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    Questions & Answers (7)

    5 Top Rated Questions

    Ford charges me $294.00 for 1 axle, my driver side axle is broken, this seems like a very good deal to get 2 for 261 dollars but are they really better than factory axles? Also will it hold 600 hp?

    • These axles are stronger than the factory axles and will hold a higher level of power consistently, however are not rated to a specific horsepower figure.

    Helpful (2)

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

    • Yes

    Helpful (2)

    Has the stud issue been resolved? I've read in the reviews that the given studs are too short. Thanks

    What is the horsepower rating on these axles.

    • These have not been tested in terms of a HP rating at this point in time.

    Helpful (0)

    Are these axles comparable to OE specs or built stronger the factory

    • You will definitely see an improvement and better overall quality with the SR axles when compared to the factory axles.

    Helpful (0)
    Post Your Question
    2 More Questions
    Is this all the parts I’ll need for replacing my current axle shafts with these? Or do i need other parts or oils? 1 answer
    Does this fit on the drivers side . The back rim ? Is it for all ? The front and back ? 1 answer

    Recommended For You

    Customer Reviews (43) Write a Review

    Overall Rating 3.9

    out of 5 stars

    Installation Time:Afternoon

    Installation Cost:$500-$1000

    • Performance Gain 4.025641 4.0
    • Fit 4.153846 4.2



    • 4/5

      Installation Time: Afternoon

      January 30, 2019

      Good product

      Only thing wrong is that the lug nuts are too shor.

      JesusO

      Year: 2005 Submodel: GT

      Helpful (0)

    • 1/5

      January 28, 2019

      SR Performance splines

      Terrible fit. 3/4" too long. Got the rear end disassemble just to find out the new splines would not fit.

      AndrewC

      Year: 2014 Submodel: GT

      Helpful (0)

    • 1/5

      Installation Time: Less than 1 Hour

      January 18, 2019

      Bad Product

      Bearings were slightly bigger than Ford factory bearings there for a while I was not able to use them and press them in. I have done this many times before. The studs that came in the kit are about a quarter of an inch shorter than the factory studs also along with that the spline on the end of the axle had a chip in it due to it being pushed out of the bottom of the Box not saying it was from the manufacturer but definitely done in shipping and handling and the top of the box was ripped open

      KristopherK

      Year: 2007 Submodel: GT

      Helpful (0)

    • 5/5

      Installation Time: Weekend

      January 05, 2019

      Stronger Is Better

      They look Good i wish they Had Product Sticker on the End of the outside Like the Picture i am sure they will be what i need thanks for quick Delivery

      jerry

      Year: 2013 Submodel: V6

      Helpful (1)

    • 4/5

      December 27, 2018

      Axles

      The axles were a good fit. The only problem I had was the lug studs were too short to properly secure the wheels to the axles. Had to remove the new lug studs and install the O.E.M. Studs from my old axles. It was difficult to do with the new axles installed. I informed American Muscle of this problem. If I would’ve read the reviews this problem could have been nipped in the bud.

      JFSZ28

      Year: 2006 Submodel: GT

      Helpful (1)

    • 4/5

      Installation Time: Afternoon

      October 22, 2018

      Good quality for good price

      Good product, only one problem that lug studs that are on the set are to short and factory lug studs has smaller diameter, so I have to but new set.

      Michael

      Year: 2012 Submodel: V6

      Helpful (1)

    • 5/5

      Installation Time: Afternoon

      September 03, 2018

      Great replacement axles

      I got this after warping my last stock axles and it was a great direct replacement, the lug studs they give you are too short to be used with most rims so knock out the oem studs and use those instead, but all in all, great product

      BrianK

      Year: 2013 Submodel: V6

      Helpful (7)

    • 5/5

      Installation Time: Afternoon

      August 31, 2018

      SR performance 8.8 axles

      Good quality....loved them....the only issue I ran was the abs rings.....I try to heat them up with the torch and it didn’t work they broke....had to go to buy them at the dealer,but other than that I love them

      AlfonsoC

      Year: 2008 Submodel: GT

      Helpful (1)

    • 1/5

      Installation Time: Afternoon

      August 05, 2018

      Don't Use Given Studs

      The axles, bearing, and seals fit fine. The studs are way to short. Don't waste your time using them because you will have to take them back out. Learned the hard way. With most applications there are no performance gains unless running a lot of power.

      Rblade360

      Year: 2014 Submodel: V6

      Helpful (2)

    • 5/5

      Installation Time: Afternoon

      July 18, 2018

      Axles

      The studs are too short but the axles are made of great quality.

      AndresR

      Year: 2005 Submodel: GT

      Helpful (2)

    • 4/5

      Installation Time: Afternoon

      July 08, 2018

      Great axle; studs too short

      Axles, Koyo bearings and generic seals installed and run well; no notable performance difference. Have not experienced noise as stated in other’s reviews. The shop had to swap out the ABS Ring and the oem studs so there was a $45 labor upcharge. Wondering if using Trans-X vs Fords friction modifier is an acceptable substitute.

      DanielC

      Year: 2007 Submodel: GT

      Helpful (3)

    • 5/5

      Installation Time: Afternoon

      June 22, 2018

      no abs ring

      fits like a glove and with a new gear set up very nice. wish It came with a abs ring.

      TommyS

      Year: 2013 Submodel: V6

      Helpful (2)

    • 3/5

      Installation Time: Afternoon

      June 08, 2018

      nice axles wheel studs too short

      Axles fit well but the studs included too short. I used the original studs also need to exchange the ABS tone ring from your old axles does not come with them.

      cobra

      Year: 2005 Submodel: GT

      Helpful (3)

    • 3/5

      Installation Time: Full Day

      June 07, 2018

      Went semi smoothly

      Axles came quick and includes everything as stated. The wheel studs provided however were too short to use. This isn’t a big problem, but I didn’t notice until I got it all back together. I had to take it all back apart to change out the wheel studs, again not a big deal, but very time consuming

      Jeffr

      Year: 2008 Submodel: GT

      Helpful (3)

    • 5/5

      Installation Time: Weekend

      May 31, 2018

      Great Buy

      Took the weekend to install, fits great, better ride.

      RaulH

      Year: 2014 Submodel: GT

      Helpful (3)

    • 5/5

      Installation Time: Afternoon

      May 27, 2018

      Great deal

      After attempting a couple used stock axle shafts to replace the bent shaft in my 5.0, and receiving bent shafts, I couldn't find a better deal than sandr performance. Happy with the upgrade!

      TravisR

      Year: 2011 Submodel: GT

      Helpful (3)

    • 1/5

      Installation Time: Afternoon

      April 24, 2018

      Fit and finish

      As everyone mentioned studs are way too short, would be great if came with new ABS ring, makes a horrible whinning noice at speeds 110-125 KPH

      GT

      Year: 2013 Submodel: GT

      Helpful (3)

    • 5/5

      Installation Time: Full Day

      March 31, 2018

      Axle

      This a super cheap deal. Now the hard part. The abs rings pressed on axles. Good luck taking those off. It can be done but it’s tricky. I broke one befo I learned a secret easy way of removing

      mrmustang

      Year: 2000 Submodel: GT

      Helpful (4)

    • 3/5

      Installation Time: Less than 1 Hour

      January 29, 2018

      Quality axle, good for nothing wheel studs.

      I was impressed with the quality of the axles. But when I went to install the wheels, I noticed the studs that came with the axles only allowed the lug nut to grab about 2 threads. There was no way I was going to drive like that, so I installed the factory studs that were significantly longer.

      SOP

      Year: 2005 Submodel: GT

      Helpful (6)

    • 5/5

      Installation Time: Full Day

      November 02, 2017

      Great fit

      They fit great will suggest to reuse your lug studs or buy new ones from Ford

      TravisMay

      Year: 2008 Submodel: GT

      Helpful (5)

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