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BMR IRS Differential Bushing Kit; Aluminum (15-20 All)

Item 390996
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Ship to: Ashburn - 20149
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      Product Information

      Features, Description, Reviews, Specs & Installation


      • Minimize Wheel Hop and Improve Traction
      • Eliminates IRS Differential Movement
      • Eliminates Factory Bushing Deflection
      • CNC Machined 6061 Aircraft Grade Billet Aluminum Construction
      • Intended for Drag Strip Use
      • Notable Increase in NVH (Noise, Vibration, Harshness)
      • Designed and Manufactured in the USA
      • Fits All 2015 to 2020 IRS Equipped Mustangs


      Eliminates IRS Differential Deflection. Wheel hop is bad, it's that simple. If you can't hook up off the line you're going nowhere fast. Serious drag racers know that the Independent Rear Suspension (IRS) differential of the S550 Mustang is notorious for deflecting under rapid acceleration do to its soft, pliable, factory rubber bushings. A BMR Suspension IRS Differential Bushing Kit replaces those stock OEM bushings with solid aluminum two piece bushings to eliminate differential deflection. BMR's IRS Differential Aluminum Bushing Kit is the ideal answer for drag racers looking to eliminate deflection and significantly reduce wheel hop in the pursuit of quicker more consistent launches at the strip.

      Superior Quality. BMR proudly designs and manufactures their IRS Differential Bushing Kit right here in the USA. BMR CNC-machines their IRS Differential Bushings from aircraft grade 6061 billet aluminum for superior strength and a tight, precise fit. These BMR Bushings are then completed in a durable black anodized finish for aggressive good looks and long lasting corrosion resistance.

      Increase in NVH. Seeing that these BMR IRS Bushings are made from solid aluminum you will feel a significant increase in NVH (Noise, Vibration and Harshness). Because of this increase in NVH, these BMR Suspension Aluminum IRS Differential Bushings are intended for drag race use only.

      Application. This BMR Suspension IRS Differential Aluminum Bushing Kit is designed for use on all 2015 to 2020 S550 Mustangs that are equipped with the factory Independent Rear Suspension (IRS), including the V6, EcoBoost, GT and Shelby models. Intended for off-road drag race use only.

      Fitment: 2015 2016 2017 2018 2019 2020 Details

      MPN# BK050

      CA Residents: WARNING: Cancer and Reproductive Harm -


      Customer Reviews (3)

      Write a Review

      Ratings Summary

      4.7 out of 5 overall rating from 3 customers

      Installation Time: Weekend

      • November 25, 2019

        5 2015 GT - Matthewdeeaz Installation Time: Weekend

        Huge difference!

        After cracking my diff, half shaft and two bushings it was time to upgrade everything. Staying at the same boost level the car hooked harder than it ever did. Night and day difference after installing these. The noise is noticeable if you like to drive in silence but if you have long tube headers and volume above a quarter of the way you’ll never here it.

        Helpful (0)
      • September 13, 2017

        4 2016 GT - BadBitch Installation Time: Full Day

        Stop the hop

        Stopped the differential from moving but you hear everything. I mean everything. Gear lash, gear whine and all drive train sounds. A lot of noise for my daily driver but definitely a good upgrade to stop wheel hop.

        Helpful (11)
      • October 07, 2016

        5 2015 GT - IvanCRF

        Solid Everything

        I used a screw jack to get these solid diff bushings in because it was very difficult to swing a dead blow hammer due to space constraints. I froze them and used plenty of lube and it was still very difficult. These things are well made because my diff had no slop between the bushings once it was installed and it sit nice and flush with the bushings. These bushings helped to solidify my drive-train by getting rid of a lot of slop. The car is far more noisy inside, however. It sounds like a small vacuum is on and the radio needs to be turned on quite a bit higher to hear over the diff. There is only slightly more vibration inside at the shifter particularly, which is very surprising. Overall, I am happy to know my diff bolts will never shear with this setup because I built a bulletproof cradle with these bushings.

        Helpful (12)

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      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (4) Bushings
      • (4) Bolts
      • (2) Nuts
      • (6) Washers

      Tech Specs

      Will It Fit My Mustang

      • Bullitt - 19, 20
      • EcoBoost - 15, 16, 17, 18, 19, 20
      • GT - 15, 16, 17, 18, 19, 20
      • GT350 - 15, 16, 17, 18, 19, 20
      • GT350R - 15, 16, 17, 18, 19, 20
      • GT500 - 20
      • V6 - 15, 16, 17

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