Steeda Dual Rate HPDE Suspension Pack | Mustang
YOUR BUILD STARTS HERE Expert Installs Thousand Oaks, CA
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Authorized Dealer • Expert Installation • Thousand Oaks, CA
Discount Code: FFPERFORMANCE
805-267-9762
FFP · AUTHORIZED DEALER The leader in Ford performance · Over 35 years · MAP pricing SHOP ALL STEEDA →
AUTHORIZED DEALER
Part #555-2357

2015-2026 Ford Mustang – Steeda Dual Rate HPDE Suspension Pack

Fits These Vehicles 2015-2026 Ford Mustang Bullitt/GT/EcoBoost/V6
Price Original price was: $2,081.95.Current price is: $1,702.46.
  • Engineered and manufactured in Valdosta, Georgia
  • CNC-machined billet construction where applicable
  • Tested on Steeda's SCCA Majors race program
  • Steeda authorized dealer — exact MAP pricing

Limited Lifetime Warranty

Backed by Steeda — FFP is an authorized Steeda dealer and warranty claims are honored direct.

— Function Factory Performance

Authorized Steeda Autosports dealer. MAP pricing — the same price as steeda.com. Expert install available at our Thousand Oaks, CA shop. Questions on fitment or setup? Chat with Senna or call our specialists.

Overview

The full breakdown.

Warranty
Limited Lifetime

Overview

If your S550 Mustang spends more time turning laps than grabbing groceries, Steeda’s S550 Mustang Dual Rate HPDE Suspension Package is your ticket to victory lane! A race proven kit which has laid down impressive times with Steeda’s own 2016 and 2017 Mustangs, the HPDE Package comes with Front and Rear Adjustable Sway Bars, Adjustable Pro-Action Shocks and Struts, and Competition Dual Rate Springs.

Our Steeda Mustang Front and Rear Sway Bars for your 2015+ Mustang GT, EcoBoost, or V6 provide an increase in front and rear roll stiffness for a balanced handling package. The press-fit welded billet ends are far stronger than stamping the end of the bar. Billet machining construction of the Steeda Mustang Front and Rear Sway Bar ends makes for far greater strength for a bulletproof sway bar. We engineered these bars to control the vehicles’ roll stiffness properly while still allowing you to run softer springs. This optimizes your overall grip and balance of the vehicle while still allowing you to maintain exceptional ride quality.

Our Pro-Action Adjustable dampers feature street and track-proven technology which have been methodically tested and tuned to achieve optimum compression valving, giving you that quick sports car reaction on the road with easily adjustable rebound damping at the twist of a knob. From soft and comfortable to stiff and aggressive, these Pro-Action shocks have more adjustability than you will ever need!

Product Gallery

Key Benefits

Steeda Pro-Action Shocks and Struts – Adjustable ( 555 8157 )
Steeda S550 Mustang Competition Dual Rate Springs ( 555 8246 )
Steeda S550 Mustang Front and Rear Competition Sway Bars ( 555 1036 )
Lowers the vehicle .750″ at all 4 corners
Designed for competition racing but maintains outstanding street-able ride
Steeda proprietary shock valving
Shocks & Struts Specifically designed for lowered S550 Mustangs
Rebound adjustable shocks & struts for the ultimate in tunability
Front Sway Bar diameter 1-3/8″
Rear Sway Bar diameter 7/8″
Reduced body roll

Video

Fitment

2015-2026 Ford Mustang Bullitt/GT/EcoBoost/V6.

Note: Front Sway bar will not fit vehicles equipped with MagneRide Suspension. The factory shock mount will need to be drilled out to 12mm or the Steeda Billet Shock Mounts can be used.

Why Steeda
The leader in Ford performance.

Steeda has been engineering and manufacturing Ford performance parts in-house in Valdosta, Georgia for over 35 years — proven on their own SCCA Majors race team and trusted by enthusiasts who live and breathe Ford. CNC-machined billet construction, proprietary CAD-driven suspension geometry, and a relentless focus on the platforms they specialize in.

QS-9000 & ISO 9001 manufacturing · Limited lifetime warranty on Steeda-manufactured parts · Made in the USA

First-hand note

FFP fits Steeda parts every week in Thousand Oaks.

— Why we stock Steeda

OE-style engineering, in-house manufacturing, race-proven on Steeda's own SCCA program.

Steeda has been engineering Mustang — and now Explorer, Focus, F-150, and Maverick — parts in Valdosta, Georgia since 1988. CNC-machined billet, proprietary CAD-driven suspension geometry, and a factory SCCA Majors road-racing team that runs their own parts on the track every weekend. When you bolt a Steeda part onto your car, it's the same part Steeda's own race cars run.

We carry Steeda because the fitment is right the first time, the warranty is real (lifetime on Steeda-manufactured parts), and the install instructions don't leave you guessing. Drop the car at our Thousand Oaks shop and our techs handle the fit-up — or order with confidence and run it yourself.

Authority: Charles Siritho · McLaren Artura Trophy owner · Spotter for Branden Sorensen FD Pro (E46 LS+Whipple, 6th at Long Beach R1 2026) · 10+ yrs Mustang & Corvette specialist

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— FFP is an Authorized Steeda Dealer

Shop the full Steeda catalog at FFP.

The leader in Ford performance — suspension, intakes, exhaust, brakes, wheels, and more — for Mustang, Bronco, Bronco Sport, Explorer, F-150, and Maverick. Enthusiast-driven, race-tested. MAP pricing always. Expert installation in Thousand Oaks, CA.

BROWSE ALL STEEDA →
Price Original price was: $2,081.95.Current price is: $1,702.46.
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OVER 35 YEARS IN FORD PERFORMANCE. RACING EVEN LONGER.
— Steeda Autosports · sold & installed by FFP
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