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SR Performance Aluminum One Piece Driveshaft - 31 Spline (96-04 GT; 96-98 Cobra; 03-04 Mach 1)

Item 12681
Market Price $499.99 You Save 10% ($50.00)
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$449.99 (each)

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      Review & Installation Video

      So the SR Performance Aluminum One Piece Driveshaft is a great option for the '96 through '04 Mustang owners out there that are looking to shed some weight from their drive train along with strengthening their components, proving their launches an acceleration. That factory driveshaft is not only heavy but it's just not that tough and it's more likely to fail, especially if you're gonna be dumping your clutch a lot on the track. Install wise, I'll be giving this a light to a moderate one outta three wrenches on the difficulty meter here and about a two-hour job. I'll have a little bit more coming up for you on that later. So you've had your Mustang for a while or maybe it's just new to you and you're wondering, "Why get an aluminum driveshaft or just a new one?" Well one aftermarket driveshaft does a lot much more than just shed actual weight off the car. Less weight in terms of a driveshaft and how it functions means your engine can ride faster and that results in putting more power down and reducing parasitic loss. Now the stock Mustang driveshaft is made from a heavy steel and is more or less designed for the life of the car. Now it produces a fair amount of noise, vibration, and harshness, and it's not really geared towards a car that seeing a lotta track time or just in general, spirited driving. So the heavier any rotating part on your car is, the more engine power is used to move them. When you lower that weight and free up the engine, you make it work less, which again, is gonna result in getting you into that power band that much quicker. Now this aluminum driveshaft is not only gonna be a great option from a weight savings perspective as by greatly reducing that rotating mass, you're gonna be improving your Mustang's quarter mile times, along with off-the-line acceleration, and even cutting down on your 60 foots. But on-road benefits aside here, guys, we're gonna see that this is manufactured out of a lightweight three and a half inch diameter Alcoa's certified 6061-T6 Aluminum, that is gonna come along equipped with a new pinion flange and a 1330 series U-joint. I can't stress it enough here, that weight savings is another great variable about this one piece driveshaft versus the factory equipment, as this is gonna come in at 13 pounds over the factory's 21 pounds, which is apparent right outta the box. Now it's not just a matter of it being a slight diet. Shaving that weight is amplified as cutting down on that rotational mass, in turn, creates better performance. Looking at the pricing, guys, expect to be spending around 450 bucks to get this onto your car. And then switching gears to the installation portion of the video. Like I said a little bit earlier, this is going to warrant an easy but an involved one outta three wrenches on our difficulty meter here, about a two-hour job with a fair amount of tools. So you'll start by getting your rear end up in the air either with a pair stands or on race ramps and then locate the four bolts that secure the pinion flange, which is located at the rear of the car. Now you may want to use a swivel to get a good grip on the bolts, and if they're rusted, make sure to hit 'em with a lotta lube or heat 'em up. So if you're using ramps and you have difficulty accessing all of the pinion flange bolts, simply lift the rear up slightly and then just rotate the drive shaft. And before removing all four bolts, make sure to get a jack stand or a similar support underneath the old driveshaft just to prevent it from dropping down. But once they're loose, you're gonna wanna slide the driveshaft rearward and away from the trans. You're gonna wanna watch out for any fluid that may be leaking out of the trans as well. Now if the rear is elevated higher than the front, this should not be an issue for you. But once you're done there, guys, carefully slide the yoke of the new driveshaft into the end of the transmission and then locate the four original bolt holes in the diff pinion flange, reinstall the original bolts, and then tighten and torque them to spec. So that'll wrap up my quick review of the SR Performance Aluminum One Piece 31 Spline Driveshaft, fitting the '96 through '04 Mustang GT, the '03 through '04 Mach 1, and the '96 through the '98 Cobra, that can be found right here at

      Product Information

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


      • Quicker Acceleration
      • More Responsive Engine
      • Seamless 1-Piece Aluminum Tubing
      • 31 Spline Design
      • 45.5" Length Shaft
      • Includes New Pinion Flange
      • Made in the USA
      • Fits Manual 1996-2004 GT, Bullitt, Mach 1 and 1996-1998 Cobra Mustangs


      Faster Quarters. Shed up to 29 pounds of rotating mass and shave up to 0.2 seconds off your quarter mile time with this 31-Spline SR Performance Aluminum One Piece Driveshaft.

      Superior Quality. Unlike other designs which use an adapter - causing vibration and even failure - this SR Performance Driveshaft features a completely new pinion flange for superior durability and performance. It features 1330 series U-joints and is a solid, 1-piece design made with 3.5" Alcoa certified 6061 aluminum tubing.

      Precision Crafted. When selecting a driveshaft for your Mustang, you want one that has been made to the highest standards for peace of mind. This aluminum driveshaft has been balanced using Schenck military grade equipment to guarantee vibration-free performance.

      Made in the USA. Unlike other aftermarket driveshafts, every part of this driveshaft is made in the USA to ensure the highest level of performance.

      Application. This 31 Spline SR Performance Aluminum One Piece Driveshaft has been designed for the 1996-2004 manual transmission Mustangs that require a 45.5" long driveshaft including the GT, Bullitt, Mach 1 and 1996-1998 SVT Cobra models.

      SR Performance

      Fitment: 1996 1997 1998 1999 2000 2001 2002 2003 2004 Details

      MPN# 12681

      CA Residents: WARNING: Cancer and Reproductive Harm -


      Customer Reviews (16)

      Write a Review

      Ratings Summary

      4.9 out of 5 overall rating from 16 customers

      Installation Time: Less than 1 Hour

      • February 02, 2020

        4 2002 GT - 956bullet Installation Time: Afternoon


        Will this work on a 2002 mustang gt 4.6 automatic transmission?? Before I spend my money on this??

        Helpful (0)
      • July 18, 2019

        5 2002 GT - Firesar Installation Time: Afternoon

        A bit quicker and smoother.

        Pretty easy install. Had to use torch to loosen bolts. Would have been much faster with a lift. Noticeable difference.

        Helpful (1)
      • May 24, 2018

        5 2001 Bullitt - JeffW Installation Time: Less than 1 Hour

        Very nice

        Had to break it loose with a cheater bar but took longer to lift car than to change out shaft. Shaft is very nice. Car does rev a lil lighter/quicker. Tranny will drip out a lil bit so be ready for it with a towel.

        Helpful (5)
      • March 22, 2018

        5 2004 GT - Grant Installation Time: Less than 1 Hour

        SR Performance Aluminum One Piece Driveshaft

        The difference is noticeable from the first second of driving, no nasty vibration and annoying sound of tired old stock driveshaft. Also car feels much-much lighter, like sport car needs to be!. (installation took about 15 minutes)

        Helpful (6)
      • February 01, 2018

        5 1996 Cobra - DanielV Installation Time: Less than 1 Hour

        Great Product

        Bolted on easily with no problem. zero wobble or balance issues. Works great!!!

        Helpful (6)
      • November 25, 2017

        4 2004 Mach 1 - LanceS Installation Time: Less than 1 Hour

        Sr aluminum driveshaft.

        Less rotating mass, lighter, less driveline vibration, smoother. What's not to like.

        Helpful (8)
      • June 27, 2017

        5 2004 Mach 1 - HORSE Installation Time: Less than 1 Hour

        Sometimes more is better. ..

        This driveline is very nice. It was more money than the ford raceing unit, However fit perfect and fixed me vibration issues.... Sometimes you get what you pay for... Spend the extra money.. Its worth it. ..

        Helpful (6)
      • March 21, 2017

        5 2004 Mach 1 - Beasy Installation Time: Afternoon

        Worth the $

        Had the shop put it in with my 4.10s. Looks good underneath and the weight reduction is a plus. After having this installed my drive line vibration went away

        Helpful (9)
      • March 01, 2017

        5 2002 GT - GilB Installation Time: Less than 1 Hour

        SR Aluminum Driveshaft

        This drive shaft went in like a dream. Old heavy(and I mean heavy) drive shaft out, SR in. WoW what a difference in drive-ability, my car seems more responsive and rpm's are quicker.

        Helpful (7)
      • December 09, 2016

        5 2003 GT - DarrellS Installation Time: Less than 1 Hour

        Great driveshaft

        I installed this driveshaft on my 2003 mustang gt and wow! A lot smoother ride and no more vibration like I had with the stock on. Highly recommend this to anyone looking to replace your driveshaft.

        Helpful (7)

      Questions & Answers (13 answers)

      5 Top Rated Questions

      will this driveshaft fit on a 2003 ford mustang gt with an automatic transmission?

      • This 31 Spline SR Performance Aluminum One Piece Driveshaft has been designed for the 1996-2004 manual transmission Mustangs meaning it will not properly install on your automatic transmission.

      Helpful (3)

      This fit 2002 gt mustang automatic

      • This driveshaft is designed for the 1996-2004 manual transmission Mustangs that require a 45.5" long driveshaft.

      Helpful (0)

      would this fit into an 02 mustang v6 that has been v8 swapped?

      • No it would not, custom modification would be needed in order to get this driveshaft working, or any driveshaft we have to offer, due to the engine swap.

      Helpful (0)

      Hello, after replacing my stock driveshaft to SR Performance Aluminum One Piece Driveshaft, i noticed a transmission liquid leak from my transmissions main shaft seal, so i need to change the main shaft seal; my question is - will stock main shaft seal fit to this driveshaft or is there some SR performance or other special aftermarket main shaft seal to fit to this driveshaft, Thanks.

      • You would be able to use a factory style tail shaft seal with this aftermarket driveshaft.

      Helpful (0)

      Will this driveshaft be ok with a lot of mods ? I have a lot of mods I’m adding to my GT very shortly such as gears (3:73) , cams , pullies . I already have intake plenum also full exhaust..

      • This SR Performance Aluminum One Piece Driveshaft has been used on applications with quite some modifications including some forced induction Mustangs. Depending on the extent of the modifications on your Mustang this may not be strong enough, however from the modifications listed in your question, this would be sufficient.

      Helpful (0)
      Post Your Question
      8 More Questions
      will this fit the 03 V6 1 answer
      Will it fit on a 97 4.6l Gt 5speed standard without having to change anything else? 1 answer
      Will this work for automatics if yoke is reused? 1 answer
      What driveshaft would work on my 2002 mustang gt with a t56 magnum 1 answer
      does anyone make aluminum drive shafts for auto trannys 1 answer
      I have a stock car just doing a drivetrain upgrade but accidentally bought a 31 spline is there anyway to convert it to 28 spline ? 1 answer
      Will this fit in a 2003 GT V8 automatic transmission? 1 answer
      Sorry, I'm still learning, First Mustang. Does this driveshaft ONLY work for Manual transmissions ?? It doesn't clearly say "Manual Transmission Only". 2 answers

      Installation & What's in the Box

      Installation Info

      What's in the Box

      (1) Driveshaft

      Tech Specs

      Will It Fit My Mustang

      • Bullitt - 01
      • Cobra - 96, 97, 98
      • GT - 96, 97, 98, 99, 00, 01, 02, 03, 04
      • Mach 1 - 03, 04

      For V8 Mustangs that require a 45.5" long driveshaft

          Related Mustang Categories