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Whiteline 2015 Ford Mustang GT S550 Performance Lowering Springs



SKU: 20608


The Whiteline Ford Mustang S550 GT Lowering Spring Kit (2015-2017) delivers improved vehicle performance while maintaining safety and ride quality characteristics. By lowering the vehicle’s center of gravity the unique and progressive rate coil design not only improves performance but enhances overall appearance. Developed and manufactured in Europe from the highest quality materials, coating and to the finest tolerances the Whiteline Ford Mustang S550 GT Lowering Spring Kit (2015-2017) guarantees exact fitment. The Whiteline Ford Mustang S550 GT Lowering Spring Kit (2015-2017) is engineered for optimal balance with OEM and aftermarket shocks. For the ultimate in grip activation pair these lowering springs with Whiteline Sway Bar Kits and Essentials Kits. Activate more grip for both the road and track today.


  • Manufactured in Europe from the highest quality material.
  • Also known as variable rate, progressive rate springs are designed to provide improved performance without compromising ride quality characteristics. They do this by keeping the initial spring rate low (for a smooth ride) but increasing the rate progressively as the spring compresses (for improved performance).
  • Engineered for superior fit/performance with OEM shocks while produced to the finest tolerances ensuring exact fitment
  • Engineered for superior fit and performance with OEM shocks. Produced to thefinest tolerances ensuring exact fitment
  • Backed by a limited lifetime warranty

Additional information

Weight 36.25 lbs
Dimensions 23.5 × 15.5 × 7.5 in


Model Year


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