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KONI STR.T Rear Shock (15-20 GT, EcoBoost, V6)

Item 397383
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Market Price $152.99 You Save 12% ($17.83)
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$135.16 (each)

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      Review & Installation Video

      Product Information

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


      • Rear Shock
      • Improved Handling and Performance
      • Budget Alternative for OEM Shocks
      • Twin-Tube Gas Pressure Design
      • Durable Orange Finish
      • Non-Adjustable Damper
      • Sold Individually
      • NOT Compatible with MagneRide Suspension
      • Fits 2015 to 2020 Ford Mustang GT, EcoBoost and V6 Models


      Shock for Budget Minded Enthusiast. Upgrading your S550 Mustang need not be expensive. With the KONI STR.T (pronounced “street”) Rear Shock, you can enjoy better performance at a budget price. By adding a greater damping force and improving the handling of your 2015-2020 GT, EcoBoost or V6, this rear shock lets you drive through even rough roads steadily and more comfortably.

      Quality Construction. Non-adjustable, this Koni STR.T Street Series Rear Shock features a gas pressurized twin-tube design with a larger-diameter piston for optimum street performance. This shock is completed in a durable orange finish featuring the world famous KONI Logo.

      Built for Budding Enthusiasts. It's not just the entry-level price point that makes the KONI STR.T Rear Shock an attractive option for those new to upgrading their cars. This suspension piece also has a non-adjustable design that's already tuned to top performance by default. No need to fine-tune it before installation!

      Application. The KONI STR.T Rear Shock is designed for 2015 to 2020 GT, EcoBoost and V6 Mustangs. Does not fit Models equipped with MagneRide Suspension.

      Note: Coupon codes cannot be applied to this product.

      Fitment: 2015 2016 2017 2018 2019 2020 Details

      MPN# 8250 1039

      CA Residents: WARNING: Cancer and Reproductive Harm -


      Customer Reviews (11)

      Write a Review

      Ratings Summary

      4.6 out of 5 overall rating from 11 customers

      Installation Time: Afternoon

      Installation Cost: 0-$100

      • October 20, 2019

        2 2017 GT - ShouldhavegottheGT Installation Time: Less than 1 Hour

        Went out after 2 years.

        Install was pretty straightforward. Rode good for a little bit. Completely blown after 2 years. I don’t track or race my car. It’s not even a daily driver. Just weekends and stuff. Went back to the PP shocks and rides much better.

        Helpful (0)
      • June 08, 2019

        5 2015 GT - Bikefalcon Installation Time: Afternoon

        Rear end problem

        These plus adjustable sway bar links solved a problem with my lowered mustang, very pleased with results

        Helpful (0)
      • December 19, 2018

        5 2015 EcoBoost - DaveM Installation Time: Less than 1 Hour


        Better than stock ! Perfect use with lowering springs. Car didn’t sit right with stock shock absorbers.

        Helpful (2)
      • November 13, 2018

        5 2016 GT - JavierB Installation Time: Afternoon

        Koni shocks

        Love the shocks works great with the sportlines springs

        Helpful (4)
      • August 09, 2018

        5 2015 EcoBoost - NickC Installation Time: Afternoon

        Great product, easy install

        Pair installed in a little over an hour. And of course, it's Koni.

        Helpful (5)
      • May 08, 2018

        4 2015 EcoBoost - PresValHal Installation Time: Less than 1 Hour

        Ecoboost Shock Upgrade

        After previously adding Koni adjustables front and rear on a 2013 GT, I decided to try the "street-track" version on the rear of my 2015 Ecoboost. I had previously found the rear "adjustables" a little too harsh for daily driving even at the softest setting on the GT, but the street-track version is almost perfect for the Ecoboost with its Performance Pak option. While the Ecoboost handling is much improved over the non-IRS Mustangs, the rear shock addition added another level of handling when paired with the other Performance Pak upgrades.

        Helpful (7)
      • February 23, 2018

        5 2017 GT - BrianS Installation Time: Less than 1 Hour

        Good Product

        Easy install a much better ride improvement from stock.

        Helpful (6)
      • October 17, 2017

        5 2015 GT - NateW Installation Time: Afternoon

        KONI STR.T Rear Shock

        Works very well with lowering springs. I have the Mustang GT with the performance package and when I lowered the car I reused the stock shocks and the ride quality lowered too. I purchased these shocks and the ride quality in my opinion is better than it was with the stock shocks and stock ride height.

        Helpful (9)
      • June 28, 2017

        5 2016 GT - ponyupant Installation Time: Less than 1 Hour

        missing link

        The stock shocks did this car no justice. These shocks were the missing link to the performance ride I was looking for. Love the ride!

        Helpful (7)
      • June 25, 2017

        5 2015 GT - SteveB Installation Time: Shop Install Installation Cost: 0-$100

        Firm up your rear end, no pun intended

        The Koni's are a great replacement shock and really firm up the rear end of my 15 GT, more stable around corners and really put the rubber to the road when needed, definitely recommend.

        Helpful (7)

      Questions & Answers (1 answers)

      1 Top Rated Question

      Do these struts fit the stock rear strut mounts?

      • This KONI STR.T Rear Shock is a direct fit replacement and will fit into the factory rear shock mounts.

      Helpful (2)
      Post Your Question

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (1) Rear Shock

      Tech Specs

      Will It Fit My Mustang

      • Bullitt - 19, 20
      • EcoBoost - 15, 16, 17, 18, 19, 20
      • GT - 15, 16, 17, 18, 19, 20
      • V6 - 15, 16, 17

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