Steeda S550 Mustang Dual Rate Ultimate Handling Springs (2015-2019+)

  • Spring Drop Front: .75"
  • Spring Drop Rear: .75"
Steeda S550 Mustang Dual Rate Ultimate Handling Springs (2015-2019+)
Steeda S550 Mustang Competition Dual Rate Springs 2015-2017
555 8246


Product Installation Instructions

Are you looking for competition-proven handling performance for your 2015-2019 S550 Mustang while still maintaining street drivability? Steeda's Dual Rate Ultimate Handling Springs are your answer! Our experience and expertise in high-performance street and racing suspension systems is second to none, and the team here at Steeda has put that experience to work for you. Designed for ALL street and road racing applications, Steeda's Competition springs have the highest rates on the market but still maintain a comfortable and enjoyable ride when put on the street. 

Competition-proven in both NASA and SCCA events, these springs greatly reduce nosedive and keep body roll to a minimum for the ultimate in performance handling. By lowering your S550 Mustang .750" all around, these springs provide an optimized center of gravity and an aggressive stance. Pair these with our Pro-Action shocks and struts as well as other Steeda suspension products to make your S550 Mustang a winner!

Professional racecar driver, Billy Johnson borrowed a Q500 for some laps at Palm Beach International Raceway and this is what he has to say about them.

"The Steeda Q500 was a blast to drive on track... The adjustable suspension was far from harsh and had a wide range of adjustability to dial the car in at the track. Overall it was a nice dual purpose street and track package that raised the limits of the Mustang GT."
- Billy Johnson

Note: Steeda Springs are manufactured under these rigorous manufacturing certifications: QS-9000 & ISO 9001.

Product Benefits:

  • Lowers the vehicle .750" at all 4 corners
  • Designed for competition racing but maintains outstanding street-able ride
  • Highest spring rate for dramatic improvement in handling and reduction of nosedive
  • Steeda collaborates with the best motorsport spring engineers in the industry to provide you the best products possible
  • Steeda springs are developed using advanced proprietary CAD data, and our exclusive 3D modeling setting us apart from the others
  • Race-proven in NASA and SCCA events 
  • LIFETIME warranty
MPN: 555-8246

Fitment & Features

Installation Information
Level of Difficulty: Tech Recommended
Time of Install: About 4 Hours
Tools Required: Shop Tools

Made in USA: Yes

Vehicle Fitment
Fits Model Year: 2015, 2016, 2017

Customer Reviews

Unrivaled Spring Package with Upgraded Dampers
I highly, highly doubt there is a superior "non-coilover" spring package out there. The rates make total sense. The fact that they're dual rate has significantly reduced body roll on my car such that I can run softer sway bar settings for increased compliance. Additionally, with Pro-Action Adjustable dampers, these are more than tolerable on the street, even with my upgraded bushings and bearings, bracing, and lower profile tires. I am often approached by people I passed on track asking "what coilovers do you have". You'll have to spend big bucks to beat these things.
Did you find this helpful?  7 of 8 Found Helpful
Reviewed by:  from . on 4/13/2018
Competition dual rate springs - daily driver review
Installed these springs myself, using the supplied instructions. First impression was, they feel like stock. Then I hit the highway and damn these make the car feel tight, planted and secure, cornering is way more flat. Highly recommend these springs. Alignment was easy to dial in, as the drop was 0.75-0.9 inch all around. Car doesn't bottom out on any speed bumps. IMHO perfect height.
Did you find this helpful?  11 of 11 Found Helpful
Reviewed by:  from Vancouver, B.C.. on 12/9/2017
There are no reviews for this product!

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More races are won...more track records are set...and more championships are captured with vehicles using Steeda performance parts than any other brand.

Steeda, the world's largest aftermarket manufacturer of Ford performance equipment, is the leader in parts and upgrades for Mustang, Fusion, Fiesta, Focus vehicles, F-150 trucks and more. With over 4,000 items, including Steeda Manufactured Suspension/Chassis components, Induction/Cold Air Intakes and Shifters, is your one-stop for performance parts, accessories, modifications and tuning.

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