Wes Duenkel
June 4, 2018
Photos By: Michael Morgan

Lowering springs and late-model Mustangs go together like peanut butter and jelly. Ford’s engineering requirements for ground clearance, approach angles, and—believe it or not—tire chain installation leave fistfuls of space between the fender lips and tires. Unless your Mustang is destined for stage rally competition, enthusiasts universally agree that Mustangs look better lower to the ground.

The most cost-effective way to reduce fender gap is to install lowering springs. Aldan American, headquartered in Carson, California, identified the need for lowering springs for 2015-current S550-chassis Mustangs. Available as PN 500100, their AXS Mustang Lowering Spring Kit features four springs wound from premium cold-wound high-tensile strength chrome silicon steel and are finished with a highly durable black coating. The kit lowers Mustangs 1.25-inch front and rear for a more aggressive, road-hugging stance.

We’ve done dozens of lowering spring installations on earlier-model Mustangs, but haven’t witnessed many installations on the newest chassis. Fortunately, Aldan American invited us to see how their AXS Mustang Lowering Springs were installed on a 2017 Mustang GT at Powerhaus in Torrance, California.

The process is pretty straightforward, but a few specialized tools are required to do the job safely. Check out the photos and captions for the details.

1. Aldan American, headquartered in Carson, California, identified the need for lowering springs for 2015-current S550-chassis Mustangs. This 2017 GT was ready for the lowering treatment.

2. Ford’s engineering requirements for ground clearance, approach angles, and—believe it or not—tire chain installation leave fistfuls of space between the fender lips and tires.

3. Aldan American’s AXS Mustang Lowering Springs feature premium cold-wound high-tensile strength chrome silicon steel and are finished with a highly durable black coating. The kit lowers Mustangs 1.25-inch front and rear for a more aggressive, road-hugging stance.

4. Powerhaus in Torrance California handled the installation duties. Before any wrenches were turned, we measured the stock ride height.

5. The stock front suspension is a typical coil strut configuration. The strut and spring are removed as an assembly.

6. After removing the brake caliper, we disconnected the sway bar end link from the strut.

7. Next, we removed the nuts clamping the strut to the spindle.

8. With a floor jack gently supporting the control arm, we tapped the bolts through the spindle and strut ears.

9. With the bolts removed, we then removed the three nuts holding the strut top mount to the strut tower.

10. We removed the stock strut and spring assembly from the wheel well.

11. Using a spring compressor, we relieved the spring pressure on the upper strut mount so we could remove it and swap in the Aldan lowering spring over the strut shaft.

12. With the Aldan spring installed on the OEM strut, we placed the assembly into position and tightened up the three strut top mounting nuts.

13. Note that the strut-to-spindle bolts are splined and need to be driven back into place before torqued to specification.

14. Moving to the rear, we supported the lower control arm and disconnected the rear sway bar link.

15. Then, we removed the upper shock mount bolts.

16. Then we removed the bolts securing the rear suspension crossmember to the chassis.

17. We carefully lowered the crossmember until the spring pressure was relieved between the chassis and the control arm.

18. With the necessary clearance, we pulled the spring out.

19. Reusing the factory isolators, we installed the Aldan American lowering springs and reinstalled all the factory components.

20. Once back on the ground, the lower ride height was immediately apparent. We realized what a difference a lowered suspension makes to a Mustang’s appearance. Without further ado, we headed to the alignment shop to make sure our Mustang’s wheels were pointing in the right direction.

21. Much better! This 2017 GT’s presence is greatly enhanced thanks to a 1.25-inch drop from Aldan American’s AXS Lowering Springs.