Vehicle Fitment

The AJP Distributors lowering spring kit is designed for:

Ford Mustang S550 Models

• Ford Mustang V6 2015-2017
• Ford Mustang EcoBoost 2015-2021
• Ford Mustang GT 5.0L V8 2015-2021

Compatible with both manual and automatic transmission applications.

Key Features

1-Inch Front and Rear Drop

The most noticeable benefit of this suspension upgrade is the reduction in ride height.

The springs provide approximately:

• 1-inch front lowering
• 1-inch rear lowering

This modest drop creates a sportier appearance while maintaining practicality for daily driving.

Benefits include:

• Reduced wheel gap
• Improved stance
• Lower center of gravity
• Enhanced visual appeal

For many owners, a 1-inch drop represents the sweet spot between appearance and functionality.

Ride Quality Expectations

Because lowering springs typically use higher spring rates than factory components, some changes in ride quality should be expected.

Drivers may notice:

• Slightly firmer ride
• Reduced body movement
• Improved chassis control
• Increased road feedback

However, a modest 1-inch drop generally preserves much of the Mustang’s factory comfort.

• 100% up to date items, never used or installed.
• Performance front & rear lowering springs (4-piece).
• Made by OEM approved manufacturers with materials that meets or exceeds strict OEM requirements.

Better Weight Transfer Control

A lower center of gravity helps reduce excessive weight transfer during:

• Hard acceleration
• Braking
• Cornering

This can result in a more planted feel, particularly on winding roads and during aggressive driving situations.

Affordable Suspension Upgrade

Compared to premium coilover systems, lowering springs remain one of the most budget-friendly suspension modifications available.

Benefits include:

• Lower cost
• Easier installation
• Minimal maintenance
• Factory-style operation

For Mustang owners focused primarily on appearance and moderate performance gains, lowering springs are often the most cost-effective option.

• Manufactured from SAE 9254 chrome silicon high-tensile steel spring wire for superior strength and balanced spring rates.
• CNC cold wounded and heat treated with industrial powder coating for maximum durability and corrosion protection.
• Lowers your vehicle’s center of gravity to enhance handling and response capabilities, even as also providing a more aggressive look.
• Reduces squat right through acceleration, body roll in corners, and over the top nose-dive under hard braking.
• Designed for use with OEM or aftermarket struts and shocks.
• Specifications (Estimated):
  
  • Lowering Drop Rate: 1.0″ (Front) / 1.0″ (Rear)
  • Spring Rate Front: 185-275 lb/in
  • Spring Rate Rear: 800-880 lb/in

   

• * An alignment is highly really helpful after installation. *
• No installation guides are included, we highly recommend looking for professional installation.

Improved Handling Characteristics

Lowering springs do more than improve looks.

Reducing ride height can help:

• Reduce body roll
• Improve cornering stability
• Enhance steering response
• Increase driver confidence

The Mustang’s independent rear suspension already provides excellent handling characteristics, and lowering springs can further improve chassis balance during spirited driving.

** Won’t fit models with MagneRide suspension. **

** Does Now not fit GT350 / GT500 models. **

Warranty: Yes
Condition: New
Installation Guide: Now not Included; Professional installation is highly really helpful

Why Lower an S550 Mustang?

Improved Appearance

Let’s face it—the factory S550 ride height leaves room for improvement.

Lowering the car provides:

• More aggressive profile
• Better wheel fitment appearance
• Enhanced muscle car styling

Better Handling

Reducing ride height helps improve the Mustang’s already capable chassis.

Increased Resale Appeal

Many enthusiasts prefer Mustangs with tasteful suspension upgrades, making lowering springs a desirable modification in the performance community.

Installation Considerations

The manufacturer recommends professional installation.

Before installation, inspect:

• Struts and shocks
• Sway bar links
• Control arm bushings
• Ball joints
• Alignment components

Many suspension issues become more noticeable after lowering, making preventative maintenance worthwhile.

After installation:

• Perform a four-wheel alignment
• Check tire clearance
• Verify suspension travel
• Re-torque suspension hardware

Manufacturer Part Number: LS-035BL-AMA-L1

Lowering Springs vs Coilovers

Many Mustang owners debate which suspension route to take.

Lowering Springs

Pros:

• Affordable
• Simple installation
• Reliable
• Minimal maintenance

Cons:

• Fixed ride height
• Limited adjustability

Coilovers

Pros:

• Adjustable ride height
• Greater tuning potential
• Improved performance options

Cons:

• Higher cost
• More maintenance
• More complex setup

For daily-driven Mustangs, lowering springs often provide the best balance between cost, appearance, and performance.

Best Supporting Modifications

To maximize the benefits of lowering springs, consider:

Performance Shocks and Struts

Improves ride control and handling.

Adjustable Rear Camber Arms

Useful for correcting alignment after lowering.

Sway Bars

Further reduce body roll during cornering.

Wider Wheels and Tires

Take advantage of the improved stance and handling characteristics.

Final Thoughts

The AJP Distributors 1-Inch Front and Rear Lowering Springs Kit for the 2015-2021 Ford Mustang S550 provides a simple and affordable way to improve the appearance and handling of your Mustang. With a modest 1-inch drop, improved cornering stability, and reduced wheel gap, these springs deliver many of the benefits enthusiasts seek without the complexity of a full coilover setup.

Whether you’re building a daily-driven EcoBoost, a weekend GT cruiser, or a modified Coyote-powered street machine, lowering springs remain one of the best first suspension upgrades for the S550 platform.

After all, Ford gave us a fantastic Mustang. Lowering it just helps it look like it skipped leg day a little less.