Steeda S550 Mustang Q500 Enforcer 5.0 V8


Performance Redefined

That is what the Steeda Q500 Enforcer™ Edition is all about.  We know that it's not just about who's the first one into a corner that matters, but who's the first one out that counts, so our engineers created a balanced performance package using our sophisticated Steeda G/Trac Suspension components.  When you strap into a Steeda Q500 Enforcer™ Edition.....ignite the engine.....and challenge the road ahead, you'll know we just didn't cobble together a few performance parts and call it a day.  This vehicle is built to the highest quality standards incorporating our proprietary performance parts that are designed, engineered, and manufactured under rigorous ISO 9001:2008 Certified Standards.   The Steeda Q500 Enforcer™ Edition is put through its paces under the toughest conditions imaginable and the result is a muscular yet refined balanced performer that has no equal.

Argument Against Status Quo

Power means nothing without stability and control, the Steeda Q500 Enforcer™ Edition  G-Trac Suspension and chassis modifications that have been strategically engineered into every Q500 Enforcer is designed to break the performance boundaries of the new S550 Mustang.   The result is a level of performance that makes for an unbeatable combination on the street, racetrack or dragstrip – all without sacrifice.

For the Steeda Q500 Enforcer™ we have undertaken unprecedented measures focusing on dramatically enhancing its driving dynamics.  We have developed the most comprehensive collection of suspension and chassis upgrades of any manufacturer in the market today – that when taken together, provide power and control on a master scale that is unmatched.  With newly found impressive driving dynamics, the Steeda Q500 Enforcer™ provides a level of excitement and driving that delivers practically zero pitch and roll and a level of suspension refinement that has never been experienced in a production Mustang before.

Innovation & Speed Technology

The Steeda Engineering Team developed a proprietary Cold Air Intake system that incorporates an industry exclusive integrated billet aluminium velocity stack.  This feature dramatically increases and stabilizes the flow of cool incoming air to the engine and when combined with our performance engine calibrations, the results are nothing short of spectacular.   From idle to redline, our Steeda special engine calibration starts where others left off – delivering a confident power that is rapid and responsive.  Throttle response is immediate and predictable and when coupled with our exclusive suspension and chassis modifications, you have the perfect combination of control allowing for closer contact with the road ahead.

Aerodynamic Design

As speed increases, the air rapidly thins out – which is why attention to aerodynamics is so critical in a performance vehicle.  Subtle, yet muscular in style, our Steeda aerodynamic changes are designed for function.  From the Steeda lowering springs that provide the optimum height for aerodynamic and suspension performance to the front fascia that provides minimum drag and the appropriate level of downforce (aiding the front tires to get more grip and providing reduce understeer tendencies), everything is done with the goal of maximizing performance in mind.   



2018 Steeda Q500 Enforcer™ Edition - The Iconic 5.0 Reborn

MSRP from $9,995 (+ base Ford vehicle)

The Steeda Q500 Enforcer™ Edition was designed for hardcore, power-hungry performance enthusiasts who want the most Mustang muscle for their money, period.   It starts with the 5.0-liter aluminium block V8 that’s a modern interpretation of the legendary Ford power plant.  With a bevvy of Steeda performance upgrades, this naturally-aspirated beast will churn out plenty of pure pony power to humble the competition.  Power means nothing without control, so the Q500 precision-engineered suspension and chassis modifications keep the driver in command and deliver the level of performance that makes it an unbeatable combination delivering pure driving excitement.


Powertrain: Steeda 5.0L V8 Powertrain Upgrades - 500 HP & 480 lb. ft. Torque *


  • Steeda High Flow Cold Air Intake System with Velocity Stack Injection
  • Steeda Custom Performance PCM Calibration
  • Steeda Cat-Back Performance Exhaust System
  • Steeda Tri-Ax Shifter
  • Steeda Clutch Spring Assist Upgrade (manual transmission vehicles only)

Exterior Upgrades

  • Steeda Exterior Graphic and Badge Package
  • Steeda Aerodynamic Front Splitter
  • Steeda Aerodynamic Rear Spoiler
  • Steeda Hood Strut Kit
  • Steeda Engine Bay Serialization Plate

G/Trac Suspension Upgrades - Stage I Package

  • Steeda Front and Rear Sway Bars with "welded in place" solid Billet Ends
  • Steeda IRS Subframe Bushing Support System
  • Steeda IRS Subframe Alignment Kit
  • Steeda Sport Progressive Rate Springs
  • Steeda Performance Wheel Alignment

Wheel Upgrade

  • Velgen Classic 5 Wheels with Satin Black Finish (retains stock OEM tires and TPM Sensors)

Interior Upgrade

  • Steeda Illuminated Door Sill Plates


Optional Q500 Enforcer Equipment

G/Trac Suspension Upgrades - Stage II "The Ultimate" Suspension Package

  • Steeda Pro-Action Performance Tuned Struts & Shocks
  • Steeda Billet Aluminum Front Sway Bar Mounts
  • Steeda Billet Aluminum Rear Sway Bar Mounts
  • Steeda Adjustable Rear Toe Links 
  • Steeda Billet Aluminum Vertical Links 
  • Steeda Extreme G-Trac K-Member Support Brace
  • Steeda Bump Steer Kit
  • Steeda Camber Plates
  • Steeda Billet Adjustable Rear Camber Arms
  • Steeda Rear Control Arm Spherical Bearings
  • Steeda Rear IRS Subframe Support Brace
  • Steeda Strut Tower Brace


Steeda Ultimate Drivetrain Upgrade Package

  • Twin-Disc Ultra High Performance Race Clutch Assembly
  • Forged Billet Aluminum Alloy High Performance Flywheel
  • Steeda Severe Duty 3" Aluminum Driveshaft Upgrade

Brake Upgrade

  • Slotted Brake Rotor Kit - Front and Rear

Wheel & Tire Upgrades

  • Velgen VMB9 Wheels -  (20” x 9” front, 20” x 10.5” rear) with Nitto INVO or NT05 performance tires, TPMS, and nitrogen tire fill(Finishes:  Black, Gunmetal, Silver)
  • Steeda 20" ST-R Wheels - black(20” x 9.5” front, 20” x 11” rear) with Nitto INVO or NT05 performance tires with TPMS, and nitrogen tire fill(Finishes:  Black, Gunmetal with Machined Lip)
  • HRE FF01 FlowForm Wheels (20” x 9.5” front, 20” x 11” rear) with Nitto INVO or NT05 performance tires, TPMS, and with nitrogen tire fill (Finishes: All)
  • HRE P44SC Forged Monoblok Wheels (20” x 9.5” front, 20” x 11” rear) with Nitto INVO or NT05 performance tires, TPMS, and with nitrogen tire fill(Finishes:  All)
  • Additional Special Order Wheels Available Upon Request for CONFIRMED Retail Sales only

Steeda Body Enhancement Components

  • Steeda Hood Scoop
  • Steeda Side Quarter Window Scoops - pair
  • Steeda Side Quarter Scoops - pair

Enhanced Individual Upgrades

  • Steeda Q-Series Signature Satin Blackout Painted Hood Treatment (Design Patented)
  • Steeda Ultra Lite Chassis Jacking Rails
  • Leather and Alcantara Wrapped Steering Wheel
  • Automatic Transmission Calibration Upgrade (Required w/ Automatic Trans Equipped Vehicles)
  • Custom Vehicle Paint - Show Quality Finish


Inquire about other additional options - Custom Content Packages are Available to suit your specific needs.

The Steeda Q-Series line of performance Mustangs offers something for everyone - the result of over 30+ years of uninterrupted Mustang performance engineering by Steeda Autosports. They are individually crafted with performance parts built in the USA under strict ISO 9001-2008 Certified Standards and are available with a wide variety of special performance options to suit your specific needs.

- Steeda reserves the right to adjust, alter and modify it's package content & pricing due to manufacturing shortages or other factors beyond our control. 

Denotes that all horsepower & torque ratings are estimates based on engineering prototypes and laboratory tests using a minimum of  91 octane Premium Fuel.  Actual figures may vary.

1. Store Orders Fulfilment Information

All orders are subject to product availability. As U.K stock of items increases, more and more products are available for delivery within 3 working days. However many items that we offer, may only be available at the manufacturer and can take time to get in for you.

Wherever possible, we aim to fulfil all orders within 15 working days. In instances like this where the three days are exceeded, we will inform you and aim to keep you updated.

In extreme circumstances, some products may only be manufactured to order,  these delivery times can be over a month from the purchase date. We will contact you to let you know if this is the case before we place the order with the manufacturer.

In any case, please feel free to contact us for an ETA or updates on your order once it is placed.

2. Services General Information

When booking services with us, the booking date will reflect stock availability. In some cases we may require a deposit from you at the time of booking.

In instances where service pricing is listed as 'from', the minimum price of the service is being advertised and the actual price will vary, dependant on the work required for your specific vehicle and potential option variants. 

3. Pricing and Information Disclaimer

All prices and descriptions on this website are subject to change without notice. Whilst we make every effort to provide you with the most accurate, up-to-date information, occasionally, one or more items on our website may be mis-priced or mis-represented. In the event that a product is listed incorrectly due to typographical, photographic, a technical error or error in information received from our suppliers, Motorsport and Performance Ltd shall have the right to refuse or cancel any orders placed.

If an item's correct price is lower than our stated price, we will refund the difference before shipping you the item.

If an item's correct price is higher than our stated price, we will notify you of the price error and give you the option to proceed with the order at the correct price or cancel the order.

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