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Ford Performance GT350 Half Shaft Kit Upgrade (15-19 All)

Market Price $424.99 You Save 12% ($49.00)
Our Price

$375.99 (kit)

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  • Item 397730
  • MPN# M-4130-M8S

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    Features & Details

    • OE Equipment
    • Increased Diameter Left Side Half Shaft Compared to Mustang GT
    • Handles Improvements Resulting in Increased HP
    • Includes Both Left and Right Half Shafts
    • Made in USA
    • Requires Expert or Professional Installation
    • Fits All 2015 to 2019 Ford Mustang GT350s
    A Valued Priced Upgrade. If you have installed performance upgrades on your 2015-2019 Mustang GT350, you might be worried about what effect its increased power will have on your Pony’s half shafts. The Ford Performance Mustang GT350 Half Shaft Kit is a valued priced upgrade that is recommended after doing mild drivetrain modifications or naturally aspirating engines. These shafts are designed and manufactured in the USA.

    Both Sides Included. This half shaft kit includes both left and right half shafts. The left shaft has an increased diameter, which is larger than regular Mustang GT half shafts. These half shafts are original equipment of Mustang GT350s built from 2015 and up.

    Tech Note. When installing this half shaft kit, it is recommended to also replace your IRS bearings and seals for the best results.

    Expert Installation Required. This kit requires expert or professional installation.

    Application. The Ford Performance GT350 Half Shaft Kit is engineered for installation on 2015-2019 Ford Mustang GT350 models.

    Fitment: 2015 2016 2017 2018 2019 Details

    CA Residents: Warning: California's Proposition 65

    What's in the Box
    • (1) Left Hand Side Half Shaft
    • (1) Right Hand Side Half Shaft
    Installation Info
    Tech Specs
    Will it fit my Mustang?

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    Questions & Answers (9)

    5 Top Rated Questions

    So it’s only plug and play correct?? No additional mods needed for the IRS?

    • No additional modifications are required for the Ford Performance GT350 Half Shaft Kit Upgrade.

    Helpful (2)

    What is the max hp the gt350 half shafts can handle? I know they handle the 526hp that the gt350 comes stock with, but if i add headers, exhaust, clear the cat and a do other simple things like drag radials, can these half shafts handle it?

    • The Ford Performance GT350 Half Shaft Kit Upgrade can handle quite a bit of power, however their ceiling will depend on a number of factors. As an example a car running on street tires doing street duty, and some occasional open track/autocross will be able to throw a lot more power at these than a car running slicks launching at the track. Generally these can handle around 800hp or so but it will vary.

    Helpful (2)

    I'm looking to upgrade my 2015 V6 Speed from 3.15 gears to 3.55's. Are these the 34-spline half shafts I need to buy if I'm also getting the "Ford Performance IRS Loaded Differential Housing 3.55" you offer? I'm upgrading the car for road track use and will keep it naturally aspirated, so these half shafts should be fine, correct? Thanks!

    • The Ford Performance GT350 Half Shaft Kit will be compatible with the Ford Performance IRS Loaded Differential Housing. These Half shafts will work excellent for a car like your's.

    Helpful (2)

    What is the horse power rating for these?

    • The Ford Performance GT350 Half Shaft Kit is made to withstand the 526 horsepower that the GT350 puts out stock. After that it would depend on the number and how the car is driven.

    Helpful (2)

    Will this fit my 2016 mustang ecoboost? i plan on adding the 3.73 gears along with the Ford Performance T2R Torsen Differential - 34 Spline 8.8 in.

    • The GT350 Half Shaft Upgrade Kit will fit your 2016 Ecoboost Mustang even with additional upgrades such as rear end gear or differential change.

    Helpful (1)
    Post Your Question
    4 More Questions
    Had to get a new set of half shafts for my automatic 2015 GT. The shop I took it to said that these didn't fit and that I would need a Shelby housing/knuckle to fit this. I can't find any posts saying there are issues... but the expert installer couldn't make it fit. I've installed the Ford Performance Track Pack suspension, but I can't imagine that would change anything. Can I get any confirmation that these shafts should work? 1 answer
    Hello, will these fit an 2016 ecoboost mustang with 3.15 Diff? Since the pumpkin for the 3.55 and above and 3.15 are different not sure if they will fit due to the spline number 1 answer
    I have a 2017 gt. Not a 350. Will it fit a basic mustang gt or does it only fit gt350’s? 1 answer
    I have a 2016 gt with bolt ons, nitto n555r and a 100 wet shot on a plate kit. Do you think these half shafts could hold roll racing? 1 answer

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    Customer Reviews (2) Write a Review

    Overall Rating 3

    out of 5 stars

    Installation Time:Afternoon

    • Performance Gain 4 4
    • Fit 3 3

    • 1/5

      September 04, 2018


      Purchased these with the intent of putting on my car, but they were damaged.


      Year: 2015 Submodel: GT

      Helpful (0)

    • 5/5

      Installation Time: Afternoon

      June 22, 2018


      Easy install took about 2 hours to install they are definitely better than factory stock axles we launch at 5000 rpm on slicks


      Year: 2016 Submodel: GT

      Helpful (8)

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