Vehicle Fitment
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2015+ Ford Mustang
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S550 chassis
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EcoBoost, GT, GT350 applications (kit-specific)
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Street, canyon, and track use
(Yes, it handles. No, it’s not just for parking lot flex.)
Pedders – Extreme Xa Coilover Kit 2015+ Ford Mustang S550 Includes Plates (PED-162099)
What Makes the Extreme Xa Kit Different
This isn’t entry-level suspension. The Extreme Xa system is engineered for control, consistency, and repeatability—the stuff that actually matters when driving hard.
Key Features
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High-performance monotube dampers
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Height-adjustable threaded bodies
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Included camber plates (huge win)
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Matched spring rates for S550 geometry
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Tuned for aggressive street and track use
Translation: less body roll, better tire contact, and alignment flexibility baked in.


LesaD –
I really like the Pedders’ coil over product. It has made a real difference in handling and suspension. These were installed as a DIY project. We had a small issue with noise coming from the read driver’s side wheel. It turned out to be a loose collar on the rear coil (very common issue for any coil over kit). I contacted the customer support to get an idea of what the problem was. They were very patient with helping me fix the issue. I recommend Pedders as a company and the coil over as their product.