2018 & 2015 Mustang GT Independent Rear Suspension Assemblies – Performance-Tuned IRS with OEM Gearing

Description

Upgrade your Mustang’s handling, traction, and drivetrain efficiency with these OEM Ford Mustang GT Independent Rear Suspension (IRS) assemblies, pulled from two performance-driven builds. Whether you’re restoring, swapping, or improving your current setup, these complete IRS units offer factory precision, bolt-in fitment, and gear ratios suited for various performance needs.

Included are:

• 2018 Mustang GT IRS with 64,000 miles and 3.15 gears – ideal for higher top-end speed, smooth highway cruising, and turbocharged setups.

• 2015 Mustang GT IRS with 71,000 miles and 3.55 gears – perfect for aggressive off-the-line acceleration, improved throttle response, and naturally aspirated performance.

Each unit comes complete with axles, control arms, differential, bushings, knuckles, and factory hardware. These are OEM pullouts—not aftermarket replacements—meaning you get the same fit, durability, and engineering Ford originally designed for the S550 platform.

Key Features

• Complete OEM IRS Assemblies: Includes differential, axles, suspension arms, bushings, and all core components pre-assembled and ready for installation.

• Two Gear Ratio Options: Choose between 3.15 for top-end speed and fuel economy or 3.55 for better torque delivery and acceleration.

• Direct Fit for 2015–2023 Mustang GTs: Designed to bolt directly into S550 chassis with no modifications required.

Top Benefits

• Improved Handling & Ride Comfort: Independent suspension allows for better tire contact and road compliance, especially during spirited driving or cornering.

• OEM Reliability & Fitment: Built by Ford, these units maintain the integrity and precision of factory engineering with proven mileage and durability.

• Ideal for Builds, Repairs, or Swaps: A cost-effective solution for performance upgrades, drivetrain replacements, or IRS conversions on older models.