Alignment Kit - IRS Subframe 15-21 Mustang

The Steeda IRS Subframe Alignment Kit (part number 555-4438) is designed for 2015-2026 Ford Mustangs. It is made from CNC-machined Delrin, a high-quality thermoplastic known for its strength and low friction. This kit aims to precisely align the independent rear suspension (IRS) subframe, eliminating unwanted movement that can occur during aggressive driving or when upgrading to stiffer suspension components. By preventing subframe shift, it helps maintain proper suspension geometry, leading to improved handling, stability, and a more predictable feel. The Delrin material ensures that no additional noise, vibration, or harshness (NVH) is added to the vehicle. This kit is a direct bolt-on installation, making it a relatively straightforward upgrade for enthusiasts.