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Adjustable S550 Mustang Suspension vs Non-Adjustable

Shop S550 Suspension

There's always room for improvement or customization, and the same is true for the S550 Mustang. With IRS, you have even more flexibility to dial in your Mustang's handling to the way you want it.

Shop Suspension

Adjustable parts allow you to make small tweaks, so you can fine tune your suspension. In some places it’s acceptable, almost mandatory, to use non-adjustable parts. Adjustable parts take extra work to get everything dialed in correctly, but if you are mechanically inclined and don't mind taking extra time to adjust everything, adjustable is will serve you better than a static setup.

American Muscle

What's the Difference?

Using Adjustable Parts

  • Allows for suspension fine tuning
  • Promotes even tire wear
  • Traction is improved with proper alignment specs
  • Reduces suspension deflection

Using Non-adjustable Parts

  • Reduces suspension deflection
  • Fixed position, no fine tuning available
  • Easier to install

Rear Toe Rods

From the factory, Mustangs have stamped steel rear toe rods with rubber bushings. These factory rods will deflect under heavy loading, allowing the rear wheels to toe in or toe out. This can lead to erratic handling characteristics or uneven tire wear. Installing adjustable toe rods are an excellent idea when lowering the vehicle. It allows you to correct rear end geometry after lowering and keeps the toe settings locked in place by reducing deflection. 

Non-adjustable toe rods can be used as well, but should be reserved for Mustang owners that don’t plan on lowering their cars. Without the adjustability from the toe rod, your alignment specs may be stuck in an unfavorable position.

2015-2017 Mustang Adjustable Toe Links Installed
Adjustable Toe Link Installed

Rear Camber Links

Stock rear camber links are similar to the toe rods; they’re constructed with rubber bushings that will deflect under load and they don’t offer a wide range of adjustment. By switching to an adjustable camber link, you are able to precisely dial in your camber. This is another critical step when lowering your Mustang, as extreme camber can cause uneven tire wear or poor handling characteristics. 

Non-adjustable camber links can still offer rigidity and reduced deflection over the OEM links. If your camber is in spec without needing adjustable links, a set of non-adjustable links can reduce suspension deflection and prevent camber excessive camber changes during suspension travel.

2015-2017 Mustang with Billet Aluminum Vertical Links (Spherical Bushings)
Billet Aluminum Vertical Link

Front End Alignment

OEM strut mounts do the job they were designed for: holding the spring to the strut, the strut to the car, and maintaining factory alignment specs. When you lower your Mustang, you change the positions of various suspension components. These changes result in different toe settings, caster settings, and camber settings. You can use your factory strut mounts with camber bolts to help correct camber problems, the toe can be adjusted via the toe rods, but the caster can’t be adjusted with OEM mounts. 

If you need to change your caster settings or want to get your alignment dialed in perfectly, caster/camber plates are the best way to go. Camber bolts are able to get everything close, but caster/camber plates offer the greatest range of adjustability, they’re more versatile, and they can improve steering response by replacing the squishy factory mount with a bearing that eliminates deflection.

2015-2017 Mustang with Caster Camber Plates
Color Matched Caster Camber Plates

Dial in Your New Setup

Getting your suspension set up properly allows your car to maintain proper grip, reduce or eliminate unwanted deflection, prevent unnecessary tire wear, and improve handling. Choosing the right mix of parts for your Mustang will ensure that your alignment shop will be able to get your car aligned properly, allowing you to get the most performance out of your Mustang's suspension. Choosing an adjustable suspension is almost always the best route, but not everyone needs everything to be adjustable.

Track Style Handling Pack for Fastback S550 Mustangs
Track Style Handling Pack for Fastbacks
Fitment includes: 2015, 2016, 2017, 2018, 2019, GT, V6, EcoBoost