Steeda S550 Aluminum Race Differential Bushing Insert System | 2015+ Ford Mustang (Ecoboost, V6, GT) (555-4440)

Steeda Autosports
Looking for the lowest price?

Give us a call to get the best prices and parts for your build. Or, just call us with a cool racing story...either way we're here.

Phone Call or Text 651-927-4510

Email -

Fits Your:
Expected Delivery by , when ordered within hrs and mins
 Need Help Getting Started?
Call Or Text Our Experts at 651-927-4510


Earn  $2.80 In MAP Rewards!

Steeda Autosports 2015 Ford Mustang (GT, EcoBoost, V6) S550 Aluminum Race Differential Bushing Insert System was designed with hardcore racers in mind. It eliminates pinion angle changes, wheel hop, differential deflection all while increasing traction and adding strength and support the OEM bushings need to perform the way our hardcore racers intended. Made in-house from billet 6061 aluminum. This kit can be installed in under 1 hour, is adjustable and can be easily removed.


  • Easily removable, not a permanent modification
  • Easy to install (Installs in 1 hour or less)
  • 100% designed, manufactured and made in the USA


  • Limits IRS differential movement while increasing traction and eliminating wheel hop
  • Designed for the abuse seen racing down the 1/4 mile
  • Grade 10.9 hardware is included with zinc-plated washers

Please Note:

  • This is a race-only part. It will increase NVH and gear noise.



  • 2015 Ford Mustang Ecoboost
  • 2015 Ford Mustang V6
  • 2015 Ford Mustang GT
  • Notes: Works with either manual or automatic transmissions

Estimated time to install

What's in the box?

  • Steeda S550 Mustang Race Differential Bushing Insert System - Aluminum

Customer Reviews

No reviews yet