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SR Performance Aluminum One Piece Driveshaft; 31 Spline (99-01 Cobra)

Item 12680
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$449.99 (each)

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      Product Information

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


      • Quicker Acceleration
      • More Responsive Engine
      • Seamless 1-Piece Aluminum Tubing
      • 31 Spline Design
      • 44.5" Length Shaft
      • Includes New Pinion Flange
      • Made in the USA
      • Fits Manual 1999-2001 SVT 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 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 SR Performance Aluminum One Piece Driveshaft has been designed for the 1999 and 2001 manual transmission SVT Cobra Mustangs that require a 44.5" long driveshaft.

      SR Performance

      Fitment: 1999 2001 Details

      SR Performance 12680

      CA Residents: WARNING: Cancer and Reproductive Harm -


      Customer Reviews (20)

      Write a Review

      Ratings Summary

      4.8 out of 5 overall rating from 20 customers

      Installation Time: Afternoon

      Installation Cost: $100-$250

      • September 30, 2019

        5 1999 Cobra - Rio99Cobra Installation Time: Less than 1 Hour

        99 cobra novi 1000r

        Dropped approx 8-10 lbs from the stock steel driveshaft. A lot snappier and fun to drive.

        Helpful (1)
      • October 31, 2018

        4 2001 Cobra - Fox Installation Time: Less than 1 Hour

        Drive Shaft

        This piece of equipment solved my vibration issue. Installation was easy. Good work SR performance.

        Helpful (3)
      • July 31, 2018

        5 1999 Cobra - Nagini

        Much needed

        Was a pain to remove 20 year old driveline bolts. But this driveshaft cured all vibrations, squeaks, and rattles.

        Helpful (3)
      • January 26, 2018

        5 2001 Cobra - Matt Installation Time: Less than 1 Hour

        Drive shaft

        Great but. Great build quality no more vibration on my 01 cobra

        Helpful (7)
      • October 06, 2017

        5 1999 Cobra - JoeTerps Installation Time: Shop Install Installation Cost: $100-$250

        Vibration Eliminator!!!

        My 99 Cobra had a drive-line vibration that got really bad over 90. This driveshaft eliminated it. It's smoother at all speeds now. Didn't really realize I had much of a vibration at other speeds until I installed this driveshaft. Smooth as silk now. Also, I live in Colorado so power is down a bit and I would have a little trouble accelerating up a steep hill in 5th. No problem now. Had my mechanic install it for 115. Also, the shaft is beautifully constructed! Worth the price!

        Helpful (7)
      • September 19, 2017

        5 2001 Cobra - Tim Installation Time: Afternoon

        Easy upgrade

        Exact fit, solid looking driveshaft with less weight. Will be getting 4.10 gears and that will really make the most of the lighter rotating mass. Some heat and air impact gun made removal of the pinion flange bolts a breeze. I had drained the trans for a fluid change, which made for a neat and quick change.

        Helpful (6)
      • July 24, 2017

        5 1999 Cobra - ND99cobraguy

        Very light looks great

        Cuts down on vibrations acceleration is faster a little spendy but every bit of edge helps

        Helpful (7)
      • May 31, 2017

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

        T56 swap made easy

        So I did a t56 6 speed swap in my 2004 gt. My t56 was the cobra r spec with the 31 spline so it was a direct drop in into a 2004 Mustang GT with solid rear Axel. So if you are looking to do a six speed swap the length is right no spacers needed you only need to change to a 26 spline slip yoke if you want to use a terminator-spec trans

        Helpful (6)
      • April 02, 2017

        5 2001 Cobra - StevenF Installation Time: Afternoon


        helped eliminate irs vibration on 2001 cobra, easy to instsll.

        Helpful (7)
      • January 21, 2015

        5 2000 V6 - 2PonyMan Installation Time: Less than 1 Hour

        Show piece, too bad it's under the car...

        I'm (a mechanic I'm paying) is turning my 00 V6 into an 01 Cobra. So I really don't have anything to compare this to other than my stock V6 shaft. The new shaft is a lot lighter, and it's construction is very impressive. It's too bad this piece is underneath my car where no one will be able to see it at shows. It really is a masterpiece. The sticker it comes with to put in my build book is top notch also, I think the sticker was why the thing costs so much.

        Helpful (8)

      Questions & Answers (4 answers)

      4 Top Rated Questions

      How much horsepower can thjs handle

      Will this Driveshaft work on an 02 GT with T56 Magnum.

      • We have not tested the SR Performance Aluminum One Piece Driveshaft on an 02GT with a T56.

      Helpful (0)

      Will this fit in a STOCK '01 Cobra rear end?

      • From looking at the reviews, I would say yes indeed it does.

      Helpful (0)

      How estimated weight of this item?

      • When I compared this to the stock driveshaft the stock came in at 20.4 and this one came in at 13.2. Hope that helps!

      Helpful (0) Show 1 more answer
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      Installation & What's in the Box

      Installation Info

      What's in the Box

      (1) Driveshaft

      Tech Specs

      Will It Fit My Mustang

      • Cobra - 99, 01

      For Cobras that require a 44.5" long driveshaft

          Related Mustang Categories