Steeda Autosports

Steeda S550 Mustang Stage 1 Drag Pack EcoBoost/V6/GT Suspension Kit (2015-2023)

 555 4457
Typically ships in 2-3 weeks.
Buy Now

Steeda's S550 Drag Pack for 2015+ Mustangs is the ultimate suspension kit for the drag strip. Featured on our 2018 world-record-setting, 10-second 2018 Mustang GT, this kit ensures your Mustang stays firmly planted for a more powerful launch.

The kit is comprised of our S550 Drag Springs, our S550 Adjustable Rear Shocks, and our "Stop the Hop" Enthusiast Kit. The Drag Springs are a perfect match when running coil overs on the front of your car, keeping it firmly planted for maximum traction without compromising ride comfort. Additionally, the Adjustable Rear Shocks offer optimum compression valving, giving you that quick sports car reaction on the road with easily adjustable rebound damping at the twist of a knob. Lastly, The "Stop the Hop" Enthusiast Kit brings together the four best components for eliminating wheel hop in the S550 Mustang.

First is our Alignment dowel kit. This fills the factory bolt hole voids with CNC machined Delrin inserts that will square up the rear subframe to the chassis. By filling these voids we are also limiting the side to side and front to back movement of the subframe that is present under hard acceleration and braking.

Second is our tried and true IRS Subframe Bushing Support System. This 8 piece kit was a first of its kind in the performance aftermarket and so innovative and popular we patented its design! Made in-house from billet 6061 aluminum and features stainless steel hardware, this kit fills all the factory voids in the IRS subframe mounting locations. Its job is to prevent up and down movements of the subframe.

Third to this kit is the strongest support brace for the S550 IRS on the market! Made in house from chrome-moly steel, this brace is designed to support the factory subframe by directly tying it into the chassis at key mounting locations. Using factory mounting locations on the factory frame, this 5-point brace supports the front factory mount and the lower control arm mount as well. A simple bolt-in design this brace ties the subframe to the chassis in the best possible way.

Fourth is our Rear Lower Control Arm Spherical Bearings. These eliminate the factory deflection that can cause up to 2 degrees of inward toe upon acceleration, and improve chassis responsiveness. If you drag race your GT, EcoBoost or V6 Mustang, our spherical bearings for the rear lower control arm will assist tires hooking immediately upon acceleration.

Kit Includes:

  • Steeda S550 Mustang "Stop the Hop" Enthusiast Kit (555 4456)
  • Steeda S550 Mustang Pro-Action Adjustable Rear Shocks (555 8156)
  • Steeda S550 Mustang Drag Springs - Linear (555 8231)

Product Benefits:

  • Increased traction
  • Faster launch times
  • Excellent ride on the street
  • Eliminate wheel hop
  • No permanent modifications
  • Limited Lifetime Warranty
Note: The factory shock mount will need to be drilled out to 12mm or the Steeda Billet Shock Mounts can be used.

warningWARNING: California Residents: Cancer and Reproductive Harm;

Vehicle Fitment:
2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023
Vehicle Trim:
Vehicle Trim:
Vehicle Trim:
  • Free Ground Shipping

  • Enthusiast-Driven Customer Service

  • Over 35 Years in Business