Rear Subframe Bushing Kit

The Steeda vertical links are designed to eliminate wheel hop and stabilize the rear suspension geometry of the S550 and S650 Mustang platforms. By replacing factory components with CNC-machined 6061 aircraft-grade aluminum and high-tensile strength Delrin bushings, these links prevent the unwanted flex that causes toe angle changes during hard acceleration. The inclusion of billet steel bushing sleeves and spacers ensures structural integrity and long-term durability under load. Installation of these components is straightforward, providing a performance upgrade without introducing additional noise, vibration, or harshness (NVH) to the vehicle. Each set is manufactured in-house in the USA to precise measurements, ensuring they retain the handling characteristics expected from the Mustang chassis. Compatibility is specific: this part fits S550 GT500 models and S650 Mustangs equipped with the Performance Package or Brembo Package. Please note that this product is not compatible with 2024+ Mustangs featuring non-Brembo packages with single-piston rear calipers; for those applications, alternative Steeda parts 555-4129 or 555-4121 are required.