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

Item 525038
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Market Price $311.99 You Save 12% ($37.00)
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      Video Review & Installation

      Hey guys, I'm Alex from, 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

      Product Information

      Features, Description, Reviews, Q&A, Specs & Installation


      • 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


      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.

      SR Performance



      SR Performance 525038

      CA Residents: WARNING: Cancer and Reproductive Harm -

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (2) 31 Spline Axles
      • (10) Wheel Studs
      • (2) Outer Axle Shaft Bearings
      • (2) Seals

      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

      Customer Reviews (115)

        Questions & Answers

        10 More Questions

        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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