Win A 2018 RTR Spec 3 Mustang Enter Now!
Talk to a Mustang Expert
1-888-332-7930
Mon - Sun, 8:30 AM EST - 11:00 PM EST

Free Shipping On Orders Over $49. Details

Moser 8.8 Axles - 31 Spline 5 Lug (99-04 GT, Mach 1)

Market Price $310.99 You Save 12% ($35.99)
Our Price

$275.00

FREE Shipping
  • Item 73002
  • MPN# A883153

In Stock Ships same business day.
Ship to: ASHBURN - 20146
Please enter a valid Postal Code
We're sorry, zip can't be updated at this time.
Choose options to add to cart
    Create a list
    Add to New List

    Saved - View your saved items

    We're sorry. We couldn't save this product at this time.

    Features & Details

    • Forged Steel Construction
    • 31 Spline
    • Hardened Bearing Seats
    • Fits 99-04 GT, Bullitt & Mach 1 Mustangs
    Performance Upgrade. If you're putting down lots of power and torque in your GT, Bullitt, or Mach 1, a pair of Moser Engineering 31 spline axles is a high performance upgrade that will help you put that tire-smoking power to the ground.

    Street and Strip. If you have a heavily modded street or strip Pony, your stock 28 spline axles might be too weak to take the heat. These premium quality forged steel axles have 31 splines to ensure all your power and torque are transferred straight to the pavement - where it belongs.

    Built to Perform. Moser Engineering 31 Spline Forged Steel axles are made with some of the toughest, strongest, most durable materials available. These axles feature machined C-Clip grooves to fit OEM application 8.8 inch rear ends. They are non-tapered and also feature hardened bearing seats for durability and performance under high stress conditions.

    Customize. Moser Axles feature the ability to be shortened and resplined if you decide to narrow your rear at a later time.

    ABS. Worried about deleting your factory ABS? Well now you don't have to with Mosers quality design you can relocate your factory ABS sensors when installing your new Moser axels!

    Application. This pair of Moser Engineering 31 Spline Axles are designed for the 1999-2004 GT, Bullitt and Mach 1 Mustangs.

    Tech Note. For use with a 8.8" 31 spline LSD or spool.

    Fitment: 1999 2000 2001 2002 2003 2004 Details

    What's in the Box
    • (2) 31 Spine Axles
    Installation Info
    Will it fit my Mustang?
    • Bullitt - 01
    • GT - 99, 00, 01, 02, 03, 04
    • Mach 1 - 03, 04

    Fits 8.8" rear gears with 31 spline LSD or Spool

    People Who Bought This Item Also Bought

    Most Helpful Reviews

    5/5
    Satisfied

    I run these in my GT and very content with the performance of the axles. They are very durable and can pretty much take any rpm you throw at them. Not to mention the pretty reasonable price. Ive been running ...

    Read More
    Helpful (9)

    5/5
    Great product!

    these are so much thicker than the wimpy stock axles! they are ready to handle some serious launches with slicks!

    Helpful (6)

    Overall Rating 5 out of 5 stars
    Read All 25 Reviews

    Customer Photos (6) Submit Your Photo

    View All 6 Photos

    You Might Also Like

    14 Questions / 4 Answers

    Ask a Question

    Lug Studs Do these come with lug studs installed, as shown in the photos?

    dcshoun

    • Yes - these do come with the studs as shown in the photo.

      LisaS

    Helpful (1)

    c-clip eliminators? can these axles be used with c-clip eliminators??

    tictac

    • Yes. Plus you can order them with the c-clip elims. already pressed on, plus any thing else like reluctor rings for ABS/ Traction Control to stay working if you want.

      Revvy

    Helpful (1)

    I am looking into rebuilding my rear end with upgrade diff, 4:10s, and a one piece aluminum driveshaft. Will these axles delete my rear ABS or will I have an option to keep my rear ABS?

    kyle94GT

    • With the Moser 8.8 Axles you have the option to relocate your factory ABS sensors.

      VincentV

    Helpful (0)

    what all is needed when swapping from 28 spline, do they use the same size axle bearings and c-clips

    AlabamaWizard

    What is the weight of these axles and do you know the weight of my stock axle. I believe this is rotational mass and if I add LOCKIND Diffs that will be addition mass

    chaky

    Im not putting serious power to the ground. i just have a few minor upgrades on my vehicle at this moment but will eventually be adding more. im just not sure to what extent. That being said, my rear end is in need of a major over haul and i was just wondering, will it be ok to add these right now with me not putting much over stock horsepower down? Thank you so much!!!

    PonyBreath

    • You shouldn't have an issue installing the Moser 8.8 Axles, even if your Mustang is still stock.

      pserafi

    Helpful (0)

    More Products You Might Like

    Customer Reviews (25) Write a Review

    Overall Rating 5.0

    out of 5 stars




    • 5/5

      October 22, 2007

      Satisfied

      I run these in my GT and very content with the performance of the axles. They are very durable and can pretty much take any rpm you throw at them. Not to mention the pretty reasonable price. Ive been running them on slicks for about a year and have no problems at all.

      Dustin Barlow

      Helpful (9)

    • 5/5

      May 11, 2010

      Great product!

      these are so much thicker than the wimpy stock axles! they are ready to handle some serious launches with slicks!

      Jordan S.

      Helpful (6)

    • 5/5

      March 09, 2010

      Moser 31's

      Got these with my Motive 4.30's and launched from 3k-5k on my BFG stickies more times than I can count. Best on the market!

      Matthew

      Helpful (6)

    • 5/5

      July 16, 2010

      moser axles

      Price was right. Axles seem great, Mechanic said they are some of the best! Thanks American Muscle ! Affordable. Remember to know if you need them prepped for ABS.

      Lanced333

      Helpful (4)

    • 5/5

      September 07, 2009

      Moser 31 sline axles

      Had these installed the other day along with 4:10 gears and 31 splne differential in my 2003 Mach 1. So now it is time for some sticky tires and let her RIP! Great AXLES!!!

      Marc P.

      Year: 2003 Submodel: Mach 1

      Helpful (4)

    • 5/5

      April 05, 2010

      Moser 31s 04GT

      I got these when I had my gears changed out. I took the high torque differential carrier out of my dads 08 GT500 when he crashed it. I needed the 31spline axles to use it. Used it with 3.73s. Great piece and went smoothly. (we sold the GT500 and bought an 09 and built it up to 650RWHP by the way)

      Dickie Ayer

      Year: 2004 Submodel: GT

      Helpful (3)

    • 5/5

      September 29, 2014

      Fit like a glove with the new diff

      These are a great "insurance" when adding more power to your mustang. I shouldn't have to worry about breaking a axle anytime soon!

      ForrestS

      Year: 2002 Submodel: GT

      Helpful (2)

    • 5/5

      December 22, 2012

      reliable and durable

      These axles are strong an durable. I have done some research an moser is one of the best on the market. I highly recommend this product.

      Chad1011

      Year: 2004 Submodel: GT Corrapas Cove, TX USA

      Helpful (2)

    • 5/5

      September 02, 2012

      Can't break em

      Got this with 11.5 wide slicks launched at 6000rpms with 360 horsepower at the flywheel haven't broken anything if you want slicks or radials and launch higher than 4000 Rpm's then all you need are these and 31 splined differential!

      Speedmister

      Year: 2003 Submodel: GT Conway, ar

      Helpful (2)

    • 5/5

      February 01, 2012

      Moser Axles

      Once again, great service with AM. These axles are so much beefier than the stock ones. Install was pretty straight foward. Thanks again AM

      01GT

      Year: 2001 Submodel: GT Texas

      Helpful (2)

    • 5/5

      August 01, 2011

      Excellent Upgrade!!

      Super easy install and a must if looking to upgrade your LSD. Definitely helped put the power to the ground where I needed it when on the track.

      Karen B

      Year: 2003 Submodel: GT

      Helpful (2)

    • 5/5

      February 10, 2017

      Rear end is stout

      So I got the 4.10 gears and just thought why not do the whole rear end so I got these a detroit locker and the 4.10 with rebuild kit and I'm happy with my choice locks up rally nice and now I don't have to worry about the axles breaking

      RyanH

      Year: 2004 Submodel: Mach 1

      Helpful (1)

    • 5/5

      November 04, 2016

      great

      perfect fit great price, no installation issues product was perfect.

      bwaz

      Year: 2003 Submodel: GT

      Helpful (1)

    • 5/5

      August 16, 2016

      Solid Product

      Major improvement over the stock axles, the machining of these is clearly of superior quality. Great to know there are products out there that can leave you with piece of mind when putting down some serious power.

      Otxoa8

      Year: 2000 Submodel: GT

      Helpful (1)

    • 5/5

      June 05, 2016

      Excellent

      Axle came in fast and ready to go. Had to press in the new abs rings but other than that were good to go.

      sergiio92

      Year: 2001 Submodel: GT

      Helpful (1)

    • 5/5

      May 07, 2016

      Moser 8.8 Axles - 31 Spline

      Awesome!!! These axles are so much thicker than the stock ones! super beefy!! nice thing is the studs come pre-installed! The only thing you have to do is move your ABS ring over, and slide them in!

      JoshR

      Year: 2000 Submodel: GT

      Helpful (1)

    • 5/5

      July 06, 2015

      Axles to trust

      With some pretty heavy launches on these, I can say that they are great. I would put them in any future car. I can really trust them, they fit great, and they have been going good so far! It was a flawless install.

      Brian

      Year: 1994 Submodel: GT

      Helpful (1)

    • 5/5

      November 06, 2014

      Excellent Product

      Just installed these along with a FRPP 31 spline differential and couldnt be happier. Great upgrade for any car that sees the track from time to time or even for a track only car. These Moser axles can handle quite a bit of abuse.

      StanS

      Year: 1999 Submodel: GT Philadelphia, PA, USA

      Helpful (1)

    • 5/5

      February 03, 2012

      the way to go.

      you cant beat the quality, and its so much stronger then the factory 28 spline why wouldn't you want to go with the 31 spline.

      AlexAM

      Year: 2001 Submodel: GT Aston, PA

      Helpful (1)

    • 5/5

      October 13, 2011

      Get rid of your wimpy 28 spline axles, 31 spline is the way to go!!

      I added these when my diff was going bad. These are great with a an upgraded LSD and this help put some tires to the pavement for better track time. One of my favorite mods and worth the investment if you race.

      Karen

      Year: 2003 Submodel: GT Wayne, PA

      Helpful (1)

    Related Mustang Categories