Win $500 Towards Your Project Car Enter Now
1-888-332-7930 M-F 9-9,Sat 9-5:30,Sun 12-4 ET

Free Shipping on Everything. Seriously. Details

Alloy USA 8.8 Axles - 31 Spline 5 Lug (05-14 GT, 11-14 V6 & 07-09 GT500)

10 Reviews
Our Price

$289.99

  • Item #18958
  • MPN# 12189

  • Market Price $324.79
  • You Save 11% ($34.80)
In Stock Ships same business day.
Free Shipping on Everything
Product Videos Customer Photos
Features
  • 1541H alloy steel
  • 31 spline
  • 5 x 4.5" - five lug design
  • 10 Year warranty!
  • Driver and passenger side axles included
  • Fits 2005-2014 GT, 2011-2014 V6 and 2007-2009 GT500 Mustangs with 8.8" rears
Description
Performance Upgrade. If your Mustang is heavily modded or running a forced induction setup, your stock factory axles might be too weak to take the heat. These premium quality 1541H alloy steel axles will ensure that all the power and torque is transferred straight to the pavement - where it belongs.

Stronger than OEM. Manufactured from high quality 1541H alloy steel using a computer controlled induction heat treatment that results in a stronger, more durable axle shaft. Alloy USA uses a cold-formed rolled spline process that produces an axle spline that is up to 35% stronger than standard cut splines.

10 Year Warranty. These Alloy USA axles come with a 10 year limited warranty to be free of defects in material and workmanship from the date of purchase. Some limitations do apply. Please see the full Alloy USA Warranty disclosure for details.

Application. This pair of Alloy USA 5-Lug 31 Spline Axles are specifically designed for use on 2005-2014 GT, 2011-2014 V6 and 2007-2009 Shelby GT500 Mustangs that have the stock factory 8.8" 31-spline LSD installed.

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.

Mustang 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
  • Length: 31.688" / 32.813"
  • Type: C-clip
  • Stud Pattern: 5 x 4.5"
  • Stud Type: Press in
Fitment
  • Boss 302 - 12, 13
  • V6 - 11, 12, 13, 14
  • Bullitt - 08, 09
  • GT - 05, 06, 07, 08, 09, 10, 11, 12, 13, 14
  • GT500 - 07, 08, 09

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

Most Helpful Reviews View All

Overall Rating 3.8/5
5/5

Top 100 Contributor

Great Axles

I installed these axles a while ago, and have had 0 issues. ABS sensors were able to be transfered. Axles seemed stouter than my axles. I didnt use the bearing kit, my buddy (a certified mechanic) measured

Read More
Helpful (2) (0)

4/5

Top 1000 Contributor

Solid replacement.

I bent my stock axles the first time I went to the track after I upgraded my clutch. These went in along with new bearings and a new traction lock unit. Just to swap the axles only takes about 2 hours

Read More
Helpful (2) (0)

Videos

Hey, Justin with AmericanMuscle.com here, taking a closer look at the alloy USA 31 spline 8.8 axle kit, fitting all 2005 and newer GTs, all 2011 and newer V6’s, and all 2007-2009 GT500s. Anyone who is View Full Transcript

Customer Photos (1) View All

You Might Also Like

Q & A (3 Questions, 6 Answers) Ask a Question

ABS? Can the factory ABS sensors be relocated to these axles?

GafWays Year: 2011 Model: GT

Question Resolved
Good Question (0) (0)
  • Yes, I did it on mine. Great fit, just make sure you remember which side axles are on. they are different lengths, by just a bit. Do one at a time if possible.

    Helpful (0) (0)

    Clinton Year: 2012 Model: GT

    Top 100 Contributor

Show 2 more answers

About these axle replacements I want to know if these axles would be compatible with an auto trans

Carstng Year: 2007 Model: GT

Good Question (0) (0)
  • Yes, they will work with a manual and automatic.

    Helpful (0) (0)

    deepimpactgt Year: 2013 Model: GT

Show 1 more answer Answer This Question

compatible with 2008 V6? I am planning to upgrade by 7.5" V6 axle to 8.8". All the pre-assembled rear ones do not come with gears and differential locks that I am planning to put on for my racing. So can I use this kit along with gears and limited slip differentials for 8.8" to complete the upgrade? What else would I need?

gopal Year: 2008 Model: V6

Good Question (0) (0)
  • Yes the axles would work with a 8.8" housing you would just need to purchase a Limited Slip Diff that supports 31 splines and some 8.8" gears like 4.10 or 3.93 etc. You can get everything you need from AmericanMuscle

    Helpful (0) (0)

    Guitarmanmike Year: 2008 Model: GT

Answer This Question

Reviews (10) Write a Review

  • 5 Stars .50 50%
  • 4 Stars .20 20%
  • 3 Stars .10 10%
  • 2 Stars 0 0%
  • 1 Stars .20 20%
3.8

out of 5 stars

7 Customers Recommend this Product

Filter By Sort By
  • 4/5 Yes, I recommend this product

    November 07, 2013

    Solid replacement.

    I bent my stock axles the first time I went to the track after I upgraded my clutch. These went in along with new bearings and a new traction lock unit. Just to swap the axles only takes about 2 hours taking your time. They've held up great so far with street launches. I'll be anxious to get them on the track when the weather warms back up. You will NEED ABS RINGS to put on these if you have ABS. They are not included.

    Top 1000 Contributor

    CRoberts91

    Year: 2007 Model: GT Driving Style: Street / Strip 'Stangs I have owned: 1 Tuscaloosa, AL, USA

    Helpful (2) (0)

  • 5/5 Yes, I recommend this product

    September 11, 2013

    Great Axles

    I installed these axles a while ago, and have had 0 issues. ABS sensors were able to be transfered. Axles seemed stouter than my axles. I didnt use the bearing kit, my buddy (a certified mechanic) measured the diameter, and they were identical, no scaring or anything on old axle so we just reused old bearings/ seals, and have an extra set for if/when i have to do them. I got these axles because i had slightly bent my originals with some not correctly back spaced slicks. Slicks stuck out 2-3" past fender. The rear brakes started squeaking, upon putting it on a lift and running car up to speed you could see a slight runout. Replaced axles and everything is good.

    Top 100 Contributor

    Clinton

    Year: 2012 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 1 Denver, CO

    Helpful (2) (0)

  • 1/5 No, I do not recommend this product

    July 23, 2014

    Poor machining and lousy bearing and seals

    Bought a set and had installed at a well respected shop. After install took it for a drive and it sounded horrible like bad bearing or similar. (picture driving on huge offroad tires sound) I drove an hour total before having it torn back apart to investigate. Turns out the axles have machining marks and are out of round because of it. The seals were leaking after 1 hour and the bearings were already looking bad. Everything ended up getting ripped out and replaced with stock again. AM had Great customer service though. I would not waste chancing $500 in labour installing and removing to find out they have similar issues. Spring for the Moslers.

    Tesla8

    Year: 2005 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 1 Ontario, Canada

    Helpful (1) (0)

  • 1/5 No, I do not recommend this product

    January 27, 2014

    worst axles ever

    i have a 2013 with bolts on its and 11.80 car i was running fine with my stock axles i change the gears and i change the axles just for to be on the safe side with this alloy axles i made 2 passes and the driver side axle broke if you a drag your car once a while dont buy this product

    ricky13

    Year: 2013 Model: GT Driving Style: Street / Strip 'Stangs I have owned: 3 Miami, FL, USA

    Helpful (1) (0)

  • 3/5 No, I do not recommend this product

    August 12, 2013

    Good price, poor fit

    Overall, if you're looking to save money- this product workswell. They required quite a bit of filing and grinding the center hub portion to fit stock 17" GT wheels as the wheel would not slide onto the axle as it should. The lugs do not come pressed in, so you'll need a press, or a sledge hammer to get them seated properly. Also, ABS tone rings are not included, so you'll need to remove your old from stock, and again, press onto the new. I was able to do all this as I have a 20 ton press in the garage, but these might not be for every home mechanic. Product works, but be aware of possible install snags.

    Top 1000 Contributor

    DriftSoCal

    Year: 2007 Model: Other Driving Style: Daily Driver 'Stangs I have owned: 1 San Diego, CA, USA

    Helpful (0) (1)

  • 5/5 Yes, I recommend this product

    December 22, 2014

    Great Product

    I have had these axles on my car for 3 months now and they are great much firmer than stock if you are changing your gears out like I was you might as well change your axles while you got it all apart these are a perfect upgrade

    JasonK11

    Year: 2011 Model: V6 Driving Style: Daily Driver 'Stangs I have owned: 1 Muskogee, OK, USA

    Helpful (0) (0)

  • 5/5 Yes, I recommend this product

    May 05, 2014

    great axles

    These axles are a great upgrade for anyone planning on running drag radials. My car has the optional track package which comes with the boss 302 torsen differential so I ended up needing 3 bottles of gear oil(used royal purple), 2 bottles should be sufficient for a standard gt. I reused my old reluctor rings for the wheel speed sensors. It was fairly difficult to remove them from the stock axles, but a little heat and a big pry bar got the job done. The other major obstacle is installing the wheel studs which need to be pressed in. I used a hammer to pound them in instead of pressing. Not the ideal method but it was effective. Overall it was a fairly simple install that anyone with some mechanical ability can handle in their garage at home.

    deepimpactgt

    Year: 2013 Model: GT Driving Style: Street / Strip 'Stangs I have owned: 1 Southaven, MS, USA

    Helpful (0) (0)

  • 5/5 Yes, I recommend this product

    April 03, 2014

    Needed stronger axles.

    Not having to worry about a bent or broken axle is nice. Did upper control arm and new carbon fiber traction rebuild at the same time. So the rear end seems so solid. My 600+ HP will not go to waste. As always American Muscle has the best products and quick delivery.

    WhoWray

    Year: 2011 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 5 Albuquerque, NM

    Helpful (0) (0)

  • 4/5 Yes, I recommend this product

    February 25, 2014

    gets the job done well

    Felt a reinforced feel when driving over bumps and can really feel safe now when I put the power down at the track and not have to worry about bending an axle

    Gary881

    Year: 2011 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 2 Laredo, TX, USA

    Helpful (0) (0)

  • 5/5 Yes, I recommend this product

    December 20, 2013

    Great product

    Great you really can feel the differance there's no lagg and it's real easy to smoke the tires up !

    Ivan4k

    Year: 2013 Model: V6 Driving Style: Daily Driver 'Stangs I have owned: 2 Fresno, CA, USA

    Helpful (0) (0)

More Products You Might Like

Related Categories